{"id":39696,"date":"2024-05-20T10:30:19","date_gmt":"2024-05-20T06:00:19","guid":{"rendered":"https:\/\/wpadmin.maktabkhooneh.org\/mag\/?p=39696"},"modified":"2026-04-06T15:45:29","modified_gmt":"2026-04-06T12:15:29","slug":"scope-in-js","status":"publish","type":"post","link":"https:\/\/maktabkhooneh.org\/mag\/scope-in-js\/","title":{"rendered":"Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0686\u06cc\u0633\u062a\u061f \u0622\u0645\u0648\u0632\u0634 \u0627\u0633\u06a9\u0648\u067e \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647"},"content":{"rendered":"\n<p>Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0628\u0647 \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0627\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u062f\u0631 \u0622\u0646 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0648 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0633\u062a. \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u062d\u0648\u0632\u0647 \u0646\u0634\u0627\u0646\u200c\u062f\u0647\u0646\u062f\u0647 \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0627\u06cc \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u062f\u0631 \u0622\u0646 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0633\u062a. \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u062d\u0648\u0632\u0647\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0644\u0627\u06cc\u0647\u200c\u0627\u06cc \u06cc\u0627 \u0633\u0644\u0633\u0644\u0647\u200c\u0645\u0631\u0627\u062a\u0628\u06cc \u062f\u0631 \u0646\u0638\u0631 \u06af\u0631\u0641\u062a. \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u06cc\u06a9 \u062d\u0648\u0632\u0647 \u0641\u0631\u0632\u0646\u062f \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u200c\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639\u06cc \u06a9\u0647 \u062f\u0631 \u062d\u0648\u0632\u0647 \u0648\u0627\u0644\u062f \u062e\u0648\u062f \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f\u060c \u0627\u0645\u0627 \u062d\u0648\u0632\u0647 \u0648\u0627\u0644\u062f \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u200c\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639\u06cc \u06a9\u0647 \u062f\u0631 \u062d\u0648\u0632\u0647 \u0641\u0631\u0632\u0646\u062f \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u062f\u0633\u062a\u0631\u0633\u06cc \u0646\u062f\u0627\u0631\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628 \u0627\u0632 \u0645\u062c\u0644\u0647 \u0645\u06a9\u062a\u0648\u0628 \u0645\u0627 \u0627\u0637\u0644\u0627\u0639\u0627\u062a\u06cc \u062f\u0631 \u0631\u0627\u0628\u0637\u0647 \u0628\u0627 \u0627\u0633\u06a9\u0648\u067e \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0631\u0627\u0626\u0647 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0633\u06a9\u0648\u067e \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0686\u06cc\u0633\u062a\u061f<\/h2>\n\n\n\n<p>\u062d\u0648\u0632\u0647 (\u0645\u062d\u062f\u0648\u062f\u0647 | Scope) \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0627\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a. \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647\u060c \u062d\u0648\u0632\u0647 \u0645\u0634\u062e\u0635 \u0645\u06cc\u200c\u06a9\u0646\u062f \u06a9\u0647 \u06a9\u062c\u0627\u0647\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u0648 \u06a9\u062c\u0627\u0647\u0627 \u0646\u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f. \u0628\u0627\u062a\u0648\u062c\u0647 \u0628\u0647 \u0627\u0647\u0645\u06cc\u062a <a href=\"https:\/\/maktabkhooneh.org\/mag\/variable-in-javascript\/\">\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u0648 \u06a9\u0644\u0627 \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc\u060c \u0634\u0646\u0627\u062e\u062a \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0647\u0627\u06cc \u0647\u0631 \u0645\u062a\u063a\u06cc\u0631 \u0646\u06cc\u0632 \u0627\u0647\u0645\u06cc\u062a \u062e\u0627\u0635\u06cc \u062f\u0627\u0631\u062f \u0648 \u0628\u0647 \u0634\u0645\u0627 \u06a9\u0645\u06a9 \u0645\u06cc\u200c\u06a9\u0646\u062f \u062a\u0627 \u0627\u0632 \u062a\u062f\u0627\u062e\u0644\u0627\u062a \u0646\u0627\u0645\u200c\u0647\u0627\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0628\u0647\u200c\u0639\u0645\u0644 \u0622\u0648\u0631\u06cc\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--56206\" style=\"\"><div class=\"jet-listing-dynamic-field-block zht-maktab-khooneh-learn cb-ud1ng69u\"data-is-block=\"jet-engine\/dynamic-field\"><div class=\"jet-listing-dynamic-field__content\" >\r\n<div class=\"zht-learn-card\">\r\n    <div class=\"zht-learn-title-section\">\r\n        <div class=\"zht-learn-card-icon\">\r\n            <svg viewBox=\"0 0 24 24\" fill=\"currentColor\" width=\"24\" height=\"24\">\r\n                <path d=\"M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z\" \/>\r\n            <\/svg>\r\n        <\/div>\r\n        \r\n        <!-- \u0639\u0646\u0648\u0627\u0646 \u062a\u0628\u062f\u06cc\u0644 \u0634\u062f\u0647 \u0628\u0647 \u0644\u06cc\u0646\u06a9 -->\r\n        <a href=\"https:\/\/maktabkhooneh.org\/learn\/java-script\/\" class=\"zht-learn-card-title\" target=\"_blank\" rel=\"noopener noreferrer\">\r\n            \u062f\u0648\u0631\u0647\u200c\u0647\u0627\u06cc \u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a        <\/a>\r\n    <\/div>\r\n\r\n    <!-- \u062f\u06a9\u0645\u0647 \u062a\u0628\u062f\u06cc\u0644 \u0634\u062f\u0647 \u0628\u0647 \u062a\u06af button -->\r\n    <!-- \u0627\u0632 onclick \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u062f\u0647 \u062a\u0627 \u0628\u0647 \u0645\u062d\u0636 \u06a9\u0644\u06cc\u06a9 \u0644\u06cc\u0646\u06a9 \u0631\u0627 \u0628\u0627\u0632 \u06a9\u0646\u062f -->\r\n    <button class=\"zht-learn-card-btn\" data-course-url=\"https:\/\/maktabkhooneh.org\/learn\/java-script\/\" onclick=\"window.open(this.getAttribute('data-course-url'), '_blank');\">\r\n        \u0634\u0631\u0648\u0639 \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc\r\n    <\/button>\r\n<\/div><\/div><\/div><\/div>\n\n\n<p>\u062f\u0631 \u0627\u062f\u0627\u0645\u0647 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628 \u0627\u0633\u06a9\u0648\u067e \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u0627 \u062c\u0632\u0626\u06cc\u0627\u062a \u0628\u06cc\u0634\u062a\u0631\u06cc \u0645\u0648\u0631\u062f \u0628\u062d\u062b \u0642\u0631\u0627\u0631 \u062e\u0648\u0627\u0647\u06cc\u0645 \u062f\u0627\u062f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0647\u0645\u06cc\u062a \u0648 \u06a9\u0627\u0631\u0628\u0631\u062f Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u062f\u0631 \u0628\u062e\u0634 \u0642\u0628\u0644\u06cc\u060c \u0645\u0641\u0647\u0648\u0645 scope \u0631\u0627 \u0634\u0631\u062d \u062f\u0627\u062f\u06cc\u0645. \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 Scope \u0645\u0632\u0627\u06cc\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0631\u0627 \u0628\u0647\u200c\u062f\u0646\u0628\u0627\u0644 \u062f\u0627\u0631\u062f. \u0627\u0632 \u062c\u0645\u0644\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u06af\u0641\u062a \u06a9\u0647 \u062a\u0639\u06cc\u06cc\u0646 \u062f\u0633\u062a\u0631\u0633\u06cc \u0648 \u0633\u0627\u0632\u0645\u0627\u0646\u200c\u062f\u0647\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0627 \u062f\u0627\u0646\u0633\u062a\u0646 \u0645\u0641\u0647\u0648\u0645 Scope \u0645\u0642\u062f\u0648\u0631 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f. \u062f\u0631 \u0641\u0647\u0631\u0633\u062a \u0632\u06cc\u0631\u060c \u0628\u0631\u062e\u06cc \u0627\u0632 \u0645\u0647\u0645\u200c\u062a\u0631\u06cc\u0646 \u0645\u0648\u0627\u0631\u062f \u06a9\u0627\u0631\u0628\u0631\u062f Scope \u062f\u0631 \u0632\u0628\u0627\u0646 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0631\u0627\u0626\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0633\u0627\u0632\u0645\u0627\u0646\u200c\u062f\u0647\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627<\/li>\n\n\n\n<li>\u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0627\u0632 \u062a\u062f\u0627\u062e\u0644<\/li>\n\n\n\n<li>\u062f\u0631 \u062f\u0633\u062a\u0631\u0633 \u0628\u0648\u062f\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u0628\u062e\u0634 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0627\u0632 \u0628\u0631\u0646\u0627\u0645\u0647<\/li>\n\n\n\n<li>\u0627\u0645\u0646\u06cc\u062a<\/li>\n\n\n\n<li>\u062e\u0648\u0627\u0646\u0627\u06cc\u06cc \u0628\u0627\u0644\u0627\u06cc \u06a9\u062f\u0647\u0627<\/li>\n\n\n\n<li>\u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0622\u0633\u0627\u0646\u200c\u062a\u0631 \u0627\u0632 \u0628\u0631\u0646\u0627\u0645\u0647<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" width=\"780\" height=\"470\" src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39696-1.jpeg\" alt=\"\u0627\u0647\u0645\u06cc\u062a \u0648 \u06a9\u0627\u0631\u0628\u0631\u062f Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" class=\"wp-image-39697\" title=\"\" srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39696-1.jpeg 780w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39696-1-300x181.jpeg 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39696-1-768x463.jpeg 768w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0646\u0648\u0627\u0639 \u0645\u062d\u062f\u0648\u062f\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0633\u0647 \u0646\u0648\u0639 \u062d\u0648\u0632\u0647 \u0645\u062e\u062a\u0644\u0641 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f. \u0627\u06cc\u0646 \u0633\u0647 \u0646\u0648\u0639 \u062d\u0648\u0632\u0647 \u0645\u062e\u062a\u0644\u0641 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06a9\u0646\u062a\u0631\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639 \u0631\u0627 \u0645\u062f\u06cc\u0631\u06cc\u062a \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f \u0648 \u0627\u0635\u0648\u0644 \u0645\u062e\u062a\u0644\u0641\u06cc \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u0648 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f. \u062f\u0631 \u0627\u062f\u0627\u0645\u0647\u060c \u0634\u0631\u062d \u0645\u062e\u062a\u0635\u0631\u06cc \u0627\u0632 \u0627\u0646\u0648\u0627\u0639 Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u062f\u0627\u062f\u0647\u200c\u0627\u06cc\u0645.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0645\u062d\u062f\u0648\u062f\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc (Global Scope):<\/strong> \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062d\u062f\u0648\u062f\u0647\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639 \u062f\u0631 \u0633\u0637\u062d \u0628\u0627\u0644\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u0648 \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u06a9\u062f \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f.<\/li>\n\n\n\n<li><strong>\u0645\u062d\u062f\u0648\u062f\u0647 \u0628\u0644\u0648\u06a9\u06cc (Block Scope):<\/strong> \u0627\u06cc\u0646 \u0645\u062d\u062f\u0648\u062f\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0632 \u0632\u0645\u0627\u0646 \u0645\u0639\u0631\u0641\u06cc <a href=\"https:\/\/maktabkhooneh.org\/mag\/let-in-javascript\/\">let<\/a> \u0648 <a href=\"https:\/\/maktabkhooneh.org\/mag\/const-in-javascript\/\">const<\/a> \u0645\u0639\u0631\u0641\u06cc \u0634\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u062d\u0648\u0632\u0647\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639 \u062a\u0646\u0647\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0628\u0644\u0648\u06a9 \u06a9\u062f \u0645\u0634\u062e\u0635\u06cc (\u0645\u0627\u0646\u0646\u062f \u0634\u0631\u0637\u200c\u0647\u0627 \u06cc\u0627 \u062d\u0644\u0642\u0647\u200c\u0647\u0627) \u0645\u0648\u062c\u0648\u062f \u0647\u0633\u062a\u0646\u062f \u0648 \u062f\u0631 \u062e\u0627\u0631\u062c \u0627\u0632 \u0622\u0646 \u062f\u0633\u062a\u0631\u0633\u06cc \u0646\u062f\u0627\u0631\u0646\u062f.<\/li>\n\n\n\n<li><strong>\u0645\u062d\u062f\u0648\u062f\u0647 \u062a\u0627\u0628\u0639\u06cc (Function Scope):<\/strong> \u0627\u06cc\u0646 \u062d\u0648\u0632\u0647 \u0645\u0639\u0645\u0648\u0644\u0627\u064b \u0628\u0647 \u0648\u0633\u06cc\u0644\u0647 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u062d\u0648\u0632\u0647\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062a\u0648\u0627\u0628\u0639 \u062a\u0646\u0647\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062a\u0648\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f \u0648 \u062f\u0631 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0648\u0627\u0628\u0639\u060c \u0622\u0646\u0647\u0627 \u0645\u0639\u062a\u0628\u0631 \u0646\u06cc\u0633\u062a\u0646\u062f.<\/li>\n<\/ul>\n\n\n<div class=\"jet-listing-grid--50192\" style=\"\"><style><\/style><section class=\"zht-related-post\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Article\" role=\"region\"\n  aria-label=\"Related article\">\n  <div class=\"zht-related-post-section-label\">\n    \u0645\u0637\u0627\u0644\u0628 \u0645\u0631\u062a\u0628\u0637\n  <\/div>\n  <img decoding=\"async\" width=\"300\" height=\"202\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/5fdaf12d-4158-461e-a802-52c82a42fa6e-300x202.jpg.webp\" class=\"attachment-medium size-medium wp-post-image lazyload\" alt=\"\u0622\u0645\u0648\u0632\u0634 \u0622\u0631\u0627\u06cc\u0647 \u0686\u0646\u062f \u0628\u0639\u062f\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/5fdaf12d-4158-461e-a802-52c82a42fa6e-300x202.jpg.webp 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/5fdaf12d-4158-461e-a802-52c82a42fa6e-768x517.jpg.webp 768w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/5fdaf12d-4158-461e-a802-52c82a42fa6e.jpg 1024w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/202;\">\n  <a href=\"https:\/\/maktabkhooneh.org\/mag\/multidimensional-array-in-javascript\/\" class=\"zht-related-post-title\"\n    itemprop=\"headline\" target=\"_blank\">\u0622\u0645\u0648\u0632\u0634 \u0622\u0631\u0627\u06cc\u0647 \u0686\u0646\u062f \u0628\u0639\u062f\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a>\n<\/section><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u0645\u062d\u062f\u0648\u062f\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc \u06cc\u0627 Global scope<\/h2>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0648\u0627\u0628\u0639 \u06cc\u0627 \u0628\u0644\u0648\u06a9\u200c\u0647\u0627 \u06cc\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u06af\u0641\u062a \u062e\u0627\u0631\u062c \u0627\u0632 \u0628\u062f\u0646\u0647\u200c\u06cc \u0622\u06a9\u0648\u0644\u0627\u062f\u0647\u0627\u06cc \u062a\u0627\u0628\u0639 ({}) \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc \u0647\u0633\u062a\u0646\u062f.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062f\u0631 \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0633\u0631\u0627\u0633\u0631\u06cc \u0627\u0632 \u0647\u0631 \u0646\u0642\u0637\u0647\u200c\u0627\u06cc \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f.<\/li>\n\n\n\n<li>\u062d\u0648\u0632\u0647 var\u060c let \u0648 const \u0628\u0633\u06cc\u0627\u0631 \u0645\u0634\u0627\u0628\u0647 \u0647\u0645 \u0647\u0633\u062a\u0646\u062f \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0648\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0634\u0648\u0646\u062f.<\/li>\n<\/ul>\n\n\n\n<p>\u0645\u062b\u0627\u0644: \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u062a\u0645\u0627\u0645\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0631\u0627 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645 \u0648 \u062d\u0627\u0644\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u0645 \u0627\u0632 \u0647\u0631 \u0646\u0642\u0637\u0647\u200c\u0627\u06cc \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u0627\u06cc\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u0645.<\/p>\n\n\n\n<div class=\"code-container\">\n<div id=\"highlighter_35686\" class=\"syntaxhighlighter nogutter night\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"keyword\">var<\/code> <code class=\"plain\">global_variable1 = <\/code><code class=\"string\">\"maktabkhooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number2 index1 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">let global_variable2 = <\/code><code class=\"string\">\"maktab\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number3 index2 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">const global_variable3 = <\/code><code class=\"string\">\"khooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number4 index3 alt1\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number5 index4 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"keyword\">function<\/code> <code class=\"plain\">check_global_variables(){<\/code><\/div>\n<div class=\"line number6 index5 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(global_variable1);<\/code><\/div>\n<div class=\"line number7 index6 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(global_variable2);<\/code><\/div>\n<div class=\"line number8 index7 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(global_variable3);<\/code><\/div>\n<div class=\"line number9 index8 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">}<\/code><\/div>\n<div class=\"line number10 index9 alt1\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number11 index10 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">check_global_variables();<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u0645\u062b\u0627\u0644 \u0641\u0648\u0642 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code class=\"string\">maktabkhooneh<\/code> <code class=\"string\">maktab<\/code> <code class=\"string\">khooneh<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u0645\u062d\u062f\u0648\u062f\u0647 \u062a\u0627\u0628\u0639\u06cc \u06cc\u0627 Function Scope<\/h2>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u062f\u0627\u062e\u0644 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u0645\u062d\u0644\u06cc \u06cc\u0627 \u062a\u0627\u0628\u0639\u06cc \u0647\u0633\u062a\u0646\u062f\u060c \u06a9\u0647 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u0627\u0633\u062a \u06a9\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062e\u0627\u0631\u062c \u0627\u0632 \u0622\u0646 \u062a\u0627\u0628\u0639 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0646\u06cc\u0633\u062a\u0646\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--50121\" style=\"\"><div class=\"jet-listing-dynamic-field-block zht-maktab-khooneh-course cb-fb2qc30r\"data-is-block=\"jet-engine\/dynamic-field\"><div class=\"jet-listing-dynamic-field__content\" >\n<div class=\"course-card\">\n    <div class=\"course-card-img\">\n        <img decoding=\"async\" \n            data-src=\"https:\/\/media1.maktabkhooneh.org\/CACHE\/images\/courses\/images\/reactjs-63_QsAvipB_1403-08-16-164734762\/30ad815996c7019e488903891aba7d2b.webp?expire=4893471932&#038;token=58cbda5c656fe3c1c2b21f90f54d1188&#038;md5=WMvaXGVv48HCsh-Q9U0RiA==\" \n            alt=\"\u062f\u0648\u0631\u0647 \u0622\u0645\u0648\u0632\u0634 React\" \n            title=\"\u062f\u0648\u0631\u0647 \u0622\u0645\u0648\u0632\u0634 React\" \n            width=\"100%\" \n            height=\"auto\"\n           \n         src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\">\n    <\/div>\n\n    <div class=\"course-details\">\n        <a href=\"https:\/\/maktabkhooneh.org\/course\/%D8%A2%D9%85%D9%88%D8%B2%D8%B4-%D9%81%D8%B1%DB%8C%D9%85%D9%88%D8%B1%DA%A9-reactjs-mk401\/\" class=\"course-title\" target=\"_blank\" rel=\"noopener noreferrer\">\n            \u062f\u0648\u0631\u0647 \u0622\u0645\u0648\u0632\u0634 React        <\/a>\n\n        <div class=\"course-price\">\n            \n                <span class=\"real-price\">\n                                            \u06f5\u06f9\u06f9,\u06f0\u06f0\u06f0                                    <\/span>\n\n                <span>\n                    <span class=\"discounted-price\">\n                        \u06f4\u06f1\u06f9,\u06f3\u06f0\u06f0                    <\/span>\n                    <span class=\"price-currency\">\u062a\u0648\u0645\u0627\u0646<\/span>\n                <\/span>\n\n                                    <div class=\"discount-percentage\">\n                        \u06f3\u06f0%                    <\/div>\n                \n                    <\/div>\n        <button class=\"course-cta-button\" data-course-url=\"https:\/\/maktabkhooneh.org\/course\/%D8%A2%D9%85%D9%88%D8%B2%D8%B4-%D9%81%D8%B1%DB%8C%D9%85%D9%88%D8%B1%DA%A9-reactjs-mk401\/\">\n            \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062e\u0631\u06cc\u062f        <\/button>\n    <\/div>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<p>\u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062f\u0627\u062e\u0644 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627 <a href=\"https:\/\/maktabkhooneh.org\/mag\/var-in-javascript\/\">var<\/a>&nbsp;\u060clet \u0648 const \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u0628\u0647 \u0638\u0627\u0647\u0631 \u0628\u0633\u06cc\u0627\u0631 \u0645\u0634\u0627\u0628\u0647 \u0628\u0647 \u0646\u0638\u0631 \u0645\u06cc\u200c\u0631\u0633\u0646\u062f.<\/p>\n\n\n\n<p>* \u062a\u0648\u062c\u0647: \u062a\u0648\u0627\u0628\u0639 \u0648 \u0627\u0634\u06cc\u0627\u0621 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0647\u0633\u062a\u0646\u062f.<\/p>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc \u0647\u0633\u062a\u0646\u062f. \u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u0628\u0627 var \u062f\u0631\u0648\u0646 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc \u0647\u0633\u062a\u0646\u062f. \u062a\u0627\u0628\u0639 \u0627\u0632 \u067e\u0631\u0627\u0646\u062a\u0632\u0647\u0627\u06cc \u062f\u0648\u0631 \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0628\u062f\u0646\u0647 \u062a\u0627\u0628\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646\u060c \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u0648 \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc \u0628\u0631\u0627\u06cc \u0628\u062f\u0646\u0647 \u062a\u0627\u0628\u0639 \u06cc\u06a9\u0633\u0627\u0646 \u0627\u0633\u062a.<\/p>\n\n\n\n<p>\u0645\u062b\u0627\u0644: \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u062f\u0631\u0648\u0646 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645 \u0648 \u0633\u067e\u0633 \u0633\u0639\u06cc \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645 \u0628\u0647 \u0622\u0646 \u0627\u0632 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0627\u0628\u0639 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u0645.<\/p>\n\n\n\n<div class=\"line number1 index0 alt2\" dir=\"ltr\"><code class=\"keyword\">function<\/code> <code class=\"plain\">check_function_scope(){<\/code><\/div>\n\n\n\n<div class=\"line number2 index1 alt1\" dir=\"ltr\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"keyword\">var<\/code> <code class=\"plain\">variable1 = <\/code><code class=\"string\">\"maktabkhooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n\n\n\n<div class=\"line number3 index2 alt2\" dir=\"ltr\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">let variable2 = <\/code><code class=\"string\">\"maktab\"<\/code><code class=\"plain\">;<\/code><\/div>\n\n\n\n<div class=\"line number4 index3 alt1\" dir=\"ltr\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">const variable3 = <\/code><code class=\"string\">\"khooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n\n\n\n<div class=\"line number5 index4 alt2\" dir=\"ltr\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(variable1);<\/code><\/div>\n\n\n\n<div class=\"line number6 index5 alt1\" dir=\"ltr\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(variable2);<\/code><\/div>\n\n\n\n<div class=\"line number7 index6 alt2\" dir=\"ltr\"><code class=\"plain\">}<\/code><\/div>\n\n\n\n<div class=\"line number9 index8 alt2\" dir=\"ltr\"><code class=\"plain\">check_function_scope();<\/code><\/div>\n\n\n\n<div class=\"line number10 index9 alt1\" dir=\"ltr\"><code class=\"plain\">console.log(variable3);<\/code><\/div>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u06a9\u062f \u0628\u0627\u0644\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code class=\"string\">maktabkhooneh<\/code> <code class=\"string\">maktab<\/code> ReferenceError: variable3 is not defined<\/pre>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u06a9\u062f \u0628\u0627\u0644\u0627 \u0646\u0634\u0627\u0646 \u0645\u06cc\u200c\u062f\u0647\u062f \u06a9\u0647 \u06af\u0631\u0686\u0647 \u062f\u0631 \u0645\u062b\u0627\u0644 \u0628\u0627\u0644\u0627\u060c \u0633\u0639\u06cc \u06a9\u0631\u062f\u06cc\u0645 \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0627\u0628\u0639 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u0645\u060c \u0627\u0645\u0627 \u0628\u0647 \u062f\u0644\u06cc\u0644 \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc\u060c \u062e\u0637\u0627\u06cc \u0627\u0631\u062c\u0627\u0639 \u0631\u062e \u062f\u0627\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--50192\" style=\"\"><section class=\"zht-related-post\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Article\" role=\"region\"\n  aria-label=\"Related article\">\n  <div class=\"zht-related-post-section-label\">\n    \u0645\u0637\u0627\u0644\u0628 \u0645\u0631\u062a\u0628\u0637\n  <\/div>\n  <img decoding=\"async\" width=\"300\" height=\"181\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39625-1-300x181.png.webp\" class=\"attachment-medium size-medium wp-post-image lazyload\" alt=\"\u0645\u062a\u062f setInterval \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39625-1-300x181.png.webp 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39625-1-768x463.png.webp 768w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39625-1.png 780w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/181;\">\n  <a href=\"https:\/\/maktabkhooneh.org\/mag\/setinterval-in-js\/\" class=\"zht-related-post-title\"\n    itemprop=\"headline\" target=\"_blank\">\u0645\u062a\u062f setInterval \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a>\n<\/section><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u062d\u0648\u0632\u0647\u200c\u06cc \u0628\u0644\u0648\u06a9\u06cc \u06cc\u0627 Block scope<\/h2>\n\n\n\n<p>\u062a\u0627 \u067e\u06cc\u0634 \u0627\u0632 ECMA6 (2015)\u060c \u0645\u0627 \u0641\u0642\u0637 \u062f\u0648 \u0646\u0648\u0639 \u062d\u0648\u0632\u0647\u060c \u06cc\u0639\u0646\u06cc \u062d\u0648\u0632\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc \u0648 \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc \u062f\u0627\u0634\u062a\u06cc\u0645\u060c \u0627\u0645\u0627 \u0648\u0642\u062a\u06cc \u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc Let \u0648 Const \u062f\u0631 ES6 \u0645\u0639\u0631\u0641\u06cc \u0634\u062f\u0646\u062f\u060c \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u06a9\u0631\u062f\u0646\u062f. \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u062f\u0627\u062e\u0644 { } (\u067e\u0631\u0627\u0646\u062a\u0632\u0647\u0627\u06cc \u06a9\u0631\u0648\u06cc) \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062a\u0646\u0647\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u0646\u062f \u062f\u0631 \u062f\u0627\u062e\u0644 \u0647\u0645\u0627\u0646 \u062d\u0648\u0632\u0647 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f \u0648 \u0627\u0632 \u062e\u0627\u0631\u062c \u0627\u0632 \u0622\u0646 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0646\u06cc\u0633\u062a\u0646\u062f.<\/p>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627 var \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u0646\u062f\u0627\u0631\u0646\u062f \u0648 \u062a\u0646\u0647\u0627 let \u0648 const \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u062f\u0627\u0631\u0646\u062f. &nbsp;\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u062a\u0639\u0631\u06cc\u0641 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f.<\/p>\n\n\n\n<div class=\"code-container\">\n<div id=\"highlighter_809131\" class=\"syntaxhighlighter nogutter night\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">{&nbsp;&nbsp; <\/code><\/div>\n<div class=\"line number2 index1 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"keyword\">var<\/code> <code class=\"plain\">variable_1 = <\/code><code class=\"string\">\"khooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number3 index2 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">const variable_2 = <\/code><code class=\"string\">\"maktabkhooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number4 index3 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">let x=2;<\/code><\/div>\n<div class=\"line number5 index4 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">x*=2;<\/code><\/div>\n<div class=\"line number6 index5 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(x);<\/code><\/div>\n<div class=\"line number7 index6 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(variable_2);<\/code><\/div>\n<div class=\"line number8 index7 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">}<\/code><\/div>\n<div class=\"line number9 index8 alt2\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number10 index9 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">console.log(variable_1);<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u0645\u062b\u0627\u0644 \u0641\u0648\u0642 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">\u06f4\n<code class=\"string\">maktabkhooneh<\/code> <code class=\"string\">khooneh<\/code><\/pre>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u062f\u0631 \u0645\u062b\u0627\u0644 \u0628\u0627\u0644\u0627 \u0628\u0647\u200c\u062e\u0648\u0628\u06cc \u0646\u0634\u0627\u0646 \u0645\u06cc\u200c\u062f\u0647\u062f \u06a9\u0647 \u0645\u0627 \u0628\u0627 \u0645\u0648\u0641\u0642\u06cc\u062a \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u06cc\u0645\u060c \u0632\u06cc\u0631\u0627 var \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc \u0646\u062f\u0627\u0631\u062f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0645\u062d\u062f\u0648\u062f\u0647 \u0644\u063a\u0648\u06cc \u06cc\u0627 Lexical scope<\/h2>\n\n\n\n<p>Lexical scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06a9\u0627\u0631\u0628\u0631\u062f \u0632\u06cc\u0627\u062f\u06cc \u062f\u0627\u0631\u062f. \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u06a9\u0647 \u0645\u062d\u062f\u0648\u062f\u0647 \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062a\u0648\u0633\u0637 \u0645\u06a9\u0627\u0646 \u062a\u0639\u0631\u06cc\u0641 \u0622\u0646\u200c\u0647\u0627 \u062f\u0631 \u06a9\u062f \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0627\u06cc\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0641\u0642\u0637 \u062f\u0631 \u0647\u0645\u0627\u0646 \u0628\u0644\u0648\u06a9 \u06a9\u062f \u06cc\u0627 \u0628\u0644\u0648\u06a9\u200c\u0647\u0627\u06cc \u062a\u0648 \u062f\u0631 \u062a\u0648 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f. \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u0645\u062a\u063a\u06cc\u0631\u06cc \u06a9\u0647 \u062f\u0631\u0648\u0646 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u062f \u0648 \u062a\u0646\u0647\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u0622\u0646 \u062f\u0631\u0648\u0646 \u0647\u0645\u0627\u0646 \u0628\u0644\u0648\u06a9 \u06cc\u0627 \u0628\u0644\u0648\u06a9\u0647\u0627\u06cc \u062a\u0648\u062f\u0631\u062a\u0648 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0631\u062f\u060c \u0628\u0647 \u062d\u0648\u0632\u0647 \u0644\u063a\u0648\u06cc \u0645\u0639\u0631\u0648\u0641 \u0627\u0633\u062a.<\/p>\n\n\n\n<p>\u0645\u062b\u0627\u0644: \u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u062f\u0631\u0648\u0646 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u062e\u0648\u0627\u0647\u06cc\u0645 \u06a9\u0631\u062f \u0648 \u0642\u0635\u062f \u062f\u0627\u0631\u06cc\u0645 \u062f\u0631\u0648\u0646 \u062a\u0627\u0628\u0639 \u062a\u0648\u062f\u0631\u062a\u0648 \u0628\u0647 \u0622\u0646 \u062f\u0633\u062a\u0631\u0633\u06cc \u067e\u06cc\u062f\u0627 \u06a9\u0646\u06cc\u0645.<\/p>\n\n\n\n<div class=\"code-container\">\n<div id=\"highlighter_621718\" class=\"syntaxhighlighter nogutter night\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"keyword\">function<\/code> <code class=\"plain\">outerFunction() {<\/code><\/div>\n<div class=\"line number2 index1 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">const outerVariable = <\/code><code class=\"string\">\"Hello\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number3 index2 alt2\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number4 index3 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"keyword\">function<\/code> <code class=\"plain\">innerFunction() {<\/code><\/div>\n<div class=\"line number5 index4 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">const innerVariable = <\/code><code class=\"string\">\"maktabkhooneh\"<\/code><code class=\"plain\">;<\/code><\/div>\n<div class=\"line number6 index5 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">console.log(`${outerVariable} ${innerVariable}`);<\/code><\/div>\n<div class=\"line number7 index6 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">}<\/code><\/div>\n<div class=\"line number8 index7 alt1\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number9 index8 alt2\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"undefined spaces\">&nbsp;&nbsp;&nbsp;&nbsp;<\/code><code class=\"plain\">innerFunction();<\/code><\/div>\n<div class=\"line number10 index9 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">}<\/code><\/div>\n<div class=\"line number11 index10 alt2\" dir=\"ltr\" style=\"text-align: left;\"><\/div>\n<div class=\"line number12 index11 alt1\" dir=\"ltr\" style=\"text-align: left;\"><code class=\"plain\">outerFunction();<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u0645\u062b\u0627\u0644 \u0641\u0648\u0642 \u0628\u0647 \u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Hello <code class=\"string\">maktabkhooneh<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0633\u0631\u0627\u0633\u0631\u06cc \u062f\u0631 HTML<\/h2>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0633\u0631\u0627\u0633\u0631\u06cc \u06a9\u0647 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u0642\u0633\u0645\u062a\u06cc \u0627\u0632 \u0634\u06cc\u0621 window \u0647\u0633\u062a\u0646\u062f. \u0634\u06cc\u0621 window \u062d\u0648\u0632\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc \u062f\u0631 HTML \u0627\u0633\u062a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0639\u0645\u0631 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u0686\u0646\u062f \u0646\u06a9\u062a\u0647 \u062f\u0631\u062e\u0635\u0648\u0635 \u0639\u0645\u0631 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u067e\u06cc\u062a \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u062f\u0627\u0646\u0633\u062a\u0646 \u0622\u0646 \u0628\u0631\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0627\u06cc\u0646 \u0632\u0628\u0627\u0646 \u0627\u0644\u0632\u0627\u0645\u06cc \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--50121\" style=\"\"><div class=\"jet-listing-dynamic-field-block zht-maktab-khooneh-course cb-fb2qc30r\"data-is-block=\"jet-engine\/dynamic-field\"><div class=\"jet-listing-dynamic-field__content\" >\n<div class=\"course-card\">\n    <div class=\"course-card-img\">\n        <img decoding=\"async\" \n            data-src=\"https:\/\/media1.maktabkhooneh.org\/CACHE\/images\/courses\/images\/javascript-es-series_1403-08-16-164352163\/97c6aa2e4add56ea5373fa13a8178942.webp?expire=4893471932&#038;token=a299c61715e09470f165388b87e60951&#038;md5=opnGFxXglHDxZTiLh-YJUQ==\" \n            alt=\"\u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (JavaScript)\" \n            title=\"\u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (JavaScript)\" \n            width=\"100%\" \n            height=\"auto\"\n           \n         src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\">\n    <\/div>\n\n    <div class=\"course-details\">\n        <a href=\"https:\/\/maktabkhooneh.org\/course\/%D8%A2%D9%85%D9%88%D8%B2%D8%B4-%D8%AC%D8%A7%D9%88%D8%A7-%D8%A7%D8%B3%DA%A9%D8%B1%DB%8C%D9%BE%D8%AA-mk1122\/\" class=\"course-title\" target=\"_blank\" rel=\"noopener noreferrer\">\n            \u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (JavaScript)        <\/a>\n\n        <div class=\"course-price\">\n            \n                <span class=\"real-price\">\n                                            \u06f1,\u06f4\u06f9\u06f9,\u06f0\u06f0\u06f0                                    <\/span>\n\n                <span>\n                    <span class=\"discounted-price\">\n                        \u06f5\u06f2\u06f4,\u06f6\u06f5\u06f0                    <\/span>\n                    <span class=\"price-currency\">\u062a\u0648\u0645\u0627\u0646<\/span>\n                <\/span>\n\n                                    <div class=\"discount-percentage\">\n                        \u06f6\u06f5%                    <\/div>\n                \n                    <\/div>\n        <button class=\"course-cta-button\" data-course-url=\"https:\/\/maktabkhooneh.org\/course\/%D8%A2%D9%85%D9%88%D8%B2%D8%B4-%D8%AC%D8%A7%D9%88%D8%A7-%D8%A7%D8%B3%DA%A9%D8%B1%DB%8C%D9%BE%D8%AA-mk1122\/\">\n            \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062e\u0631\u06cc\u062f        <\/button>\n    <\/div>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\u0639\u0645\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0632\u0645\u0627\u0646\u06cc \u0634\u0631\u0648\u0639 \u0645\u06cc\u200c\u0634\u0648\u062f \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/li>\n\n\n\n<li>\u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u062a\u0627\u0628\u0639 \u0628\u0647 \u067e\u0627\u06cc\u0627\u0646 \u0645\u06cc\u200c\u0631\u0633\u062f\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062a\u0627\u0628\u0639 (\u0645\u062d\u0644\u06cc) \u067e\u0627\u06a9 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/li>\n\n\n\n<li>\u0632\u0645\u0627\u0646\u06cc \u06a9\u0647 \u06cc\u06a9 \u067e\u0646\u062c\u0631\u0647 \u0645\u0631\u0648\u0631\u06af\u0631 \u0631\u0627 \u0628\u0628\u0646\u062f\u06cc\u062f\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0633\u0631\u0627\u0633\u0631\u06cc \u067e\u0627\u06a9 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u062f\u06cc\u06af\u0631 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0645\u0631\u062a\u0628\u0637 \u0628\u0627 Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u0628\u0631\u0627\u06cc \u0627\u06cc\u0646\u200c\u06a9\u0647 \u0628\u0647\u062a\u0631 \u0645\u062a\u0648\u062c\u0647 \u0645\u0641\u0647\u0648\u0645 scope \u0634\u0648\u06cc\u062f\u060c \u0646\u06cc\u0627\u0632 \u0627\u0633\u062a \u062a\u0627 \u062f\u06cc\u06af\u0631 \u062a\u0639\u0627\u0631\u06cc\u0641 \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0648 \u062d\u0648\u0632\u0647\u200c\u0647\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u062f\u0627\u0646\u06cc\u062f. \u0628\u0627\u06cc\u062f \u0630\u06a9\u0631 \u06a9\u0646\u06cc\u0645 \u06a9\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0628\u0627 let\u060c var \u06cc\u0627 const \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0631\u0641\u062a\u0627\u0631\u0647\u0627\u06cc \u0645\u062a\u0641\u0627\u0648\u062a\u06cc \u0631\u0627 \u062f\u0631 \u062e\u0635\u0648\u0635 \u062d\u0648\u0632\u0647\u200c\u0647\u0627\u06cc \u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0632 \u062e\u0648\u062f \u0646\u0634\u0627\u0646 \u0645\u06cc\u200c\u062f\u0647\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0628\u062e\u0634\u060c \u062a\u0644\u0627\u0634 \u06a9\u0631\u062f\u0647\u200c\u0627\u06cc\u0645 \u062a\u0627 \u0628\u0631\u062e\u06cc \u0627\u0632 \u067e\u0631\u06a9\u0627\u0631\u0628\u0631\u062f\u062a\u0631\u06cc\u0646 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u062f\u0647\u06cc\u0645.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u062a\u063a\u06cc\u0631 const \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627 const \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc (Block scope) \u0647\u0633\u062a\u0646\u062f. \u0627\u06cc\u0646 \u0628\u062f\u0627\u0646 \u0645\u0639\u0646\u0627\u0633\u062a \u06a9\u0647 \u062a\u0646\u0647\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0628\u0644\u0648\u06a9\u06cc \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f \u0648 \u0646\u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u062f\u0648\u0628\u0627\u0631\u0647 \u062a\u0639\u0631\u06cc\u0641 \u06cc\u0627 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0627\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--50192\" style=\"\"><section class=\"zht-related-post\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Article\" role=\"region\"\n  aria-label=\"Related article\">\n  <div class=\"zht-related-post-section-label\">\n    \u0645\u0637\u0627\u0644\u0628 \u0645\u0631\u062a\u0628\u0637\n  <\/div>\n  <img decoding=\"async\" width=\"300\" height=\"201\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/606d5888-bae4-403f-aa0f-fbc1612ac720-300x201.jpg.webp\" class=\"attachment-medium size-medium wp-post-image lazyload\" alt=\"\u0622\u0645\u0648\u0632\u0634 \u06a9\u0648\u06a9\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/606d5888-bae4-403f-aa0f-fbc1612ac720-300x201.jpg.webp 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/606d5888-bae4-403f-aa0f-fbc1612ac720-768x515.jpg.webp 768w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/606d5888-bae4-403f-aa0f-fbc1612ac720.jpg 1024w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/201;\">\n  <a href=\"https:\/\/maktabkhooneh.org\/mag\/cookies-in-javascript\/\" class=\"zht-related-post-title\"\n    itemprop=\"headline\" target=\"_blank\">\u0622\u0645\u0648\u0632\u0634 \u06a9\u0648\u06a9\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647<\/a>\n<\/section><\/div>\n\n\n<h3 class=\"wp-block-heading\">var \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627 var \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u062a\u0627\u0628\u0639\u06cc (Function Scope) \u0647\u0633\u062a\u0646\u062f. \u0627\u06cc\u0646 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u0627\u0633\u062a \u06a9\u0647 \u0627\u06af\u0631 \u062f\u0631 \u062f\u0627\u062e\u0644 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0634\u0648\u0646\u062f\u060c \u062a\u0646\u0647\u0627 \u062f\u0631 \u0647\u0645\u0627\u0646 \u062a\u0627\u0628\u0639 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f \u0648 \u0627\u06af\u0631 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0627\u0628\u0639 \u062a\u0639\u0631\u06cc\u0641 \u0634\u0648\u0646\u062f\u060c \u062f\u0631 \u062d\u0648\u0632\u0647 \u0633\u0631\u0627\u0633\u0631\u06cc \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u06af\u06cc\u0631\u0646\u062f. var \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0628\u0627\u0644\u0627\u06cc \u062d\u0648\u0632\u0647 (Hoisting) \u0645\u06cc\u200c\u0628\u0631\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u06a9\u0627\u0631\u0628\u0631\u062f let \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u06a9\u0647 \u0628\u0627 let \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f\u060c \u062f\u0627\u0631\u0627\u06cc \u062d\u0648\u0632\u0647 \u0628\u0644\u0648\u06a9\u06cc (Block scope) \u0647\u0633\u062a\u0646\u062f. \u0627\u06cc\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062a\u0646\u0647\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0628\u0644\u0648\u06a9 {} \u06a9\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647\u200c\u0627\u0646\u062f \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0631\u062e\u0644\u0627\u0641 var\u060c \u0628\u0647 \u0628\u0627\u0644\u0627\u06cc \u062d\u0648\u0632\u0647 \u0628\u0631\u062f\u0647 \u0646\u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">strict mode \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>strict mode \u062d\u0627\u0644\u062a \u0633\u062e\u062a\u200c\u06af\u06cc\u0631\u0627\u0646\u0647\u200c\u0627\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0627 \u0641\u0639\u0627\u0644 \u06a9\u0631\u062f\u0646 \u0622\u0646\u060c \u0628\u0631\u062e\u06cc \u0627\u0632 \u062e\u0637\u0627\u0647\u0627\u06cc \u0631\u0627\u06cc\u062c \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc\u200c\u0634\u0648\u0646\u062f \u0648 \u06a9\u062f \u0627\u06cc\u0645\u0646\u200c\u062a\u0631\u06cc \u0646\u0648\u0634\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u062d\u0627\u0644\u062a\u060c \u0645\u062b\u0644\u0627\u064b \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631 \u0628\u062f\u0648\u0646 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var, let \u06cc\u0627 const \u0628\u0627\u0639\u062b \u062e\u0637\u0627 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">This \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc this \u0628\u0647 \u0634\u06cc\u0626\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u06a9\u0647 \u062a\u0627\u0628\u0639 \u062f\u0631 \u0622\u0646 \u0627\u062c\u0631\u0627 \u0634\u062f\u0647 \u0627\u0633\u062a. \u062f\u0631 \u062d\u0648\u0632\u0647\u200c\u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641\u060c \u0645\u0642\u062f\u0627\u0631 <a href=\"https:\/\/maktabkhooneh.org\/mag\/this-in-javascript\/\">this \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0645\u062a\u0641\u0627\u0648\u062a \u0628\u0627\u0634\u062f\u060c \u0645\u062b\u0644\u0627\u064b \u062f\u0631 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0639\u0627\u062f\u06cc\u060c this \u0628\u0647 \u0634\u06cc\u0621 \u0633\u0631\u0627\u0633\u0631\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u0648 \u062f\u0631 \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062a\u062f \u06cc\u06a9 \u0634\u06cc\u0621\u060c \u0628\u0647 \u0647\u0645\u0627\u0646 \u0634\u06cc\u0621 \u0627\u0634\u0627\u0631\u0647 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u06a9\u0644\u0648\u0698\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p><a href=\"https:\/\/maktabkhooneh.org\/mag\/closure-in-js\/\">closure \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062d\u0648\u0632\u0647\u200c\u0627\u06cc \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u062f\u0633\u062a\u0631\u0633\u06cc \u062f\u0627\u0631\u062f\u060c \u062d\u062a\u06cc \u067e\u0633 \u0627\u0632 \u0627\u06cc\u0646\u06a9\u0647 \u0622\u0646 \u062d\u0648\u0632\u0647 \u067e\u0627\u06cc\u0627\u0646 \u06cc\u0627\u0641\u062a\u0647 \u0627\u0633\u062a. \u06a9\u0644\u0648\u0698\u0631\u0647\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f \u062a\u0648\u0627\u0628\u0639 \u062e\u0635\u0648\u0635\u06cc \u06cc\u0627 \u062d\u0641\u0638 \u0648\u0636\u0639\u06cc\u062a \u062f\u0631 \u062a\u0648\u0627\u0628\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0634\u0648\u0646\u062f. \u062f\u0631 \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647\u060c \u062f\u0631 \u0645\u0637\u0627\u0644\u0628 \u0645\u062c\u0632\u0627 \u062f\u0631 \u062e\u0635\u0648\u0635 closure \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u0647\u200c\u0627\u06cc\u0645.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u062d\u0648\u0632\u0647\u200c\u06cc \u067e\u0648\u06cc\u0627 \u06cc\u0627 Dynamic scope<\/h3>\n\n\n\n<p>\u0628\u0631\u062e\u0644\u0627\u0641 \u062d\u0648\u0632\u0647 \u0644\u063a\u0648\u06cc \u06cc\u0627 Lexical scope\u060c \u062d\u0648\u0632\u0647 \u067e\u0648\u06cc\u0627 (Dynamic Scope) \u06a9\u0647 \u062f\u0631 \u0628\u0631\u062e\u06cc \u0632\u0628\u0627\u0646\u200c\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0646\u0648\u06cc\u0633\u06cc \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f\u060c \u0645\u062d\u062f\u0648\u062f\u0647 \u062f\u0633\u062a\u0631\u0633\u06cc \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0632\u0646\u062c\u06cc\u0631\u0647\u200c\u0627\u06cc \u0627\u0632 \u0641\u0631\u0627\u062e\u0648\u0627\u0646\u06cc\u200c\u0647\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0627\u062c\u0631\u0627 \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0646\u06a9\u062a\u0647: \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0632 \u062d\u0648\u0632\u0647 \u067e\u0648\u06cc\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0646\u0645\u06cc\u200c\u06a9\u0646\u062f.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u062c\u0645\u0639\u200c\u0628\u0646\u062f\u06cc<\/h2>\n\n\n\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628 \u062f\u0631 \u062e\u0635\u0648\u0635 \u062d\u0648\u0632\u0647\u200c\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u06cc\u0645. \u0627\u0628\u062a\u062f\u0627 \u0628\u0627 \u0628\u06cc\u0627\u0646\u06cc \u0633\u0627\u062f\u0647\u060c \u0645\u0641\u0647\u0648\u0645 scope \u0631\u0627 \u0634\u0631\u062d \u062f\u0627\u062f\u0647 \u0648 \u06af\u0641\u062a\u06cc\u0645 \u06a9\u0647 scope \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f \u062a\u0627 \u0647\u0631 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0631 \u06a9\u062f\u0627\u0645 \u0628\u062e\u0634\u200c\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u060c \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f. \u0633\u067e\u0633 \u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627 \u0648 \u0627\u0647\u0645\u06cc\u062a scope \u0631\u0627 \u0630\u06a9\u0631 \u06a9\u0631\u062f\u06cc\u0645 \u0648 \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u06cc\u0645 \u06a9\u0647 \u0627\u06cc\u0646 \u0645\u0641\u0647\u0648\u0645 \u0646\u0642\u0634 \u0645\u0647\u0645\u06cc \u062f\u0631 \u0627\u0645\u0646\u06cc\u062a\u060c \u062e\u0648\u0627\u0646\u0627\u06cc\u06cc\u060c \u0633\u0627\u0632\u0645\u0627\u0646\u200c\u062f\u0647\u06cc \u0648 \u062f\u0633\u062a\u0631\u0633\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062e\u0648\u0627\u0647\u062f \u062f\u0627\u0634\u062a.<\/p>\n\n\n<div class=\"jet-listing-grid--50121\" style=\"\"><div class=\"jet-listing-dynamic-field-block zht-maktab-khooneh-course cb-fb2qc30r\"data-is-block=\"jet-engine\/dynamic-field\"><div class=\"jet-listing-dynamic-field__content\" >\n<div class=\"course-card\">\n    <div class=\"course-card-img\">\n        <img decoding=\"async\" \n            data-src=\"https:\/\/media1.maktabkhooneh.org\/CACHE\/images\/courses\/images\/front_gcZ5ulR_1403-08-16-164827889\/eb15a124ff8961e6f5a4178684ece70c.webp?expire=4893471932&#038;token=0416681717d9beb623a1202e6efcac1b&#038;md5=BBZoFxfZvrYjoSAubvysGw==\" \n            alt=\"\u0622\u0645\u0648\u0632\u0634 \u0637\u0631\u0627\u062d\u06cc \u0648\u0628 \u0633\u0627\u06cc\u062a (Front-End)\" \n            title=\"\u0622\u0645\u0648\u0632\u0634 \u0637\u0631\u0627\u062d\u06cc \u0648\u0628 \u0633\u0627\u06cc\u062a (Front-End)\" \n            width=\"100%\" \n            height=\"auto\"\n           \n         src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\">\n    <\/div>\n\n    <div class=\"course-details\">\n        <a href=\"https:\/\/maktabkhooneh.org\/course\/%D8%B7%D8%B1%D8%A7%D8%AD%DB%8C-%D9%88%D8%A8-%D8%B3%D8%A7%DB%8C%D8%AA-front-end-mk3\/\" class=\"course-title\" target=\"_blank\" rel=\"noopener noreferrer\">\n            \u0622\u0645\u0648\u0632\u0634 \u0637\u0631\u0627\u062d\u06cc \u0648\u0628 \u0633\u0627\u06cc\u062a (Front-End)        <\/a>\n\n        <div class=\"course-price\">\n            \n                <span class=\"real-price\">\n                                            \u06f9\u06f9\u06f9,\u06f0\u06f0\u06f0                                    <\/span>\n\n                <span>\n                    <span class=\"discounted-price\">\n                        \u06f3\u06f9\u06f9,\u06f6\u06f0\u06f0                    <\/span>\n                    <span class=\"price-currency\">\u062a\u0648\u0645\u0627\u0646<\/span>\n                <\/span>\n\n                                    <div class=\"discount-percentage\">\n                        \u06f6\u06f0%                    <\/div>\n                \n                    <\/div>\n        <button class=\"course-cta-button\" data-course-url=\"https:\/\/maktabkhooneh.org\/course\/%D8%B7%D8%B1%D8%A7%D8%AD%DB%8C-%D9%88%D8%A8-%D8%B3%D8%A7%DB%8C%D8%AA-front-end-mk3\/\">\n            \u0645\u0634\u0627\u0647\u062f\u0647 \u0648 \u062e\u0631\u06cc\u062f        <\/button>\n    <\/div>\n<\/div>\n<\/div><\/div><\/div>\n\n\n<p>\u062f\u0631 \u0628\u062e\u0634\u200c\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u0627\u06cc\u0646 \u0645\u0637\u0644\u0628\u060c \u062f\u0631 \u062e\u0635\u0648\u0635 \u0627\u0646\u0648\u0627\u0639 Scope \u062f\u0631 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0635\u062d\u0628\u062a \u06a9\u0631\u062f\u06cc\u0645. \u0627\u06cc\u0646 \u0627\u0646\u0648\u0627\u0639 \u062f\u0631 \u0633\u0647 \u0634\u0627\u062e\u0647\u200c\u06cc \u062d\u0648\u0632\u0647\u200c\u06cc \u0633\u0631\u0627\u0633\u0631\u06cc\u060c \u062d\u0648\u0632\u0647\u200c\u06cc \u0628\u0644\u0648\u06a9\u06cc \u0648 \u062d\u0648\u0632\u0647\u200c\u06cc \u062a\u0627\u0628\u0639\u06cc \u0628\u062d\u062b \u0634\u062f\u0646\u062f. \u0628\u0627 \u0630\u06a9\u0631 \u0645\u062b\u0627\u0644\u200c\u0647\u0627\u06cc \u0633\u0627\u062f\u0647\u060c \u0633\u0639\u06cc \u06a9\u0631\u062f\u06cc\u0645 \u062a\u0627 \u0627\u06cc\u0646 \u062d\u0648\u0632\u0647\u200c\u0647\u0627 \u0648 \u062a\u0641\u0627\u0648\u062a \u0622\u0646\u200c\u0647\u0627 \u0628\u0627 \u06cc\u06a9\u062f\u06cc\u06af\u0631 \u0631\u0627 \u0645\u0634\u062e\u0635 \u06a9\u0646\u06cc\u0645.<\/p>\n\n\n\n<p>\u062f\u0631 \u0627\u0646\u062a\u0647\u0627\u06cc \u0645\u0637\u0644\u0628 \u0646\u06cc\u0632 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0645\u0634\u0627\u0628\u0647 \u0628\u0631\u0627\u06cc \u062d\u0648\u0632\u0647\u200c\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0634\u0631\u062d \u062f\u0627\u062f\u06cc\u0645. \u0628\u0631\u0627\u06cc \u0627\u06cc\u0646 \u0645\u0646\u0638\u0648\u0631\u060c \u062a\u0648\u0636\u06cc\u062d \u062f\u0627\u062f\u06cc\u0645 \u06a9\u0647 \u0686\u0637\u0648\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u0631\u0627 \u0628\u0627 let\u060c var \u06cc\u0627 const \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0631\u062f. \u0633\u067e\u0633 \u0628\u06cc\u0627\u0646 \u06a9\u0631\u062f\u06cc\u0645 \u06a9\u0647 \u0647\u0631\u06cc\u06a9 \u0627\u0632 \u0627\u06cc\u0646 \u0627\u0646\u0648\u0627\u0639 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0686\u0647 \u062a\u0641\u0627\u0648\u062a\u06cc \u0628\u0627 \u0647\u0645 \u062f\u0627\u0634\u062a\u0647 \u0648 \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc \u062e\u0627\u0635 \u0622\u0646\u200c\u0647\u0627 \u0686\u06cc\u0633\u062a.<\/p>\n\n\n\n<p>\u0634\u0645\u0627 \u0628\u0627 \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u0645\u0641\u0647\u0648\u0645 Scope \u062f\u0631 javascript \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u06a9\u062f\u0647\u0627\u06cc\u06cc \u0628\u062f\u0648\u0646 \u062e\u0637\u0627\u060c \u0627\u0645\u0646\u200c\u062a\u0631 \u0648 \u062d\u0631\u0641\u0647\u200c\u0627\u06cc\u200c\u062a\u0631 \u0631\u0627 \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f. \u0627\u06af\u0631 \u0628\u0647\u200c\u062e\u0648\u0628\u06cc \u0627\u06cc\u0646 \u0645\u0641\u0627\u0647\u06cc\u0645 \u0631\u0627 \u062f\u0631\u06a9 \u06a9\u0646\u06cc\u062f\u060c \u0627\u0632 \u0628\u0631\u0648\u0632 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0645\u0634\u06a9\u0644\u0627\u062a \u0648 \u062a\u062f\u0627\u062e\u0644\u0627\u062a \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u06a9\u062f\u0647\u0627\u06cc \u062e\u0648\u062f \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0628\u0647\u200c\u0639\u0645\u0644 \u0645\u06cc\u200c\u0622\u0648\u0631\u06cc\u062f.<\/p>\n\n\n<div class=\"jet-listing-grid--50192\" style=\"\"><section class=\"zht-related-post\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Article\" role=\"region\"\n  aria-label=\"Related article\">\n  <div class=\"zht-related-post-section-label\">\n    \u0645\u0637\u0627\u0644\u0628 \u0645\u0631\u062a\u0628\u0637\n  <\/div>\n  <img decoding=\"async\" width=\"300\" height=\"164\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39610-1-scaled-1-300x164.jpeg\" class=\"attachment-medium size-medium wp-post-image lazyload\" alt=\"Hoisting \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2024\/05\/word-image-39610-1-scaled-1-300x164.jpeg 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39610-1-scaled-1-1024x560.jpeg.webp 1024w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39610-1-scaled-1-768x420.jpeg.webp 768w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39610-1-scaled-1-1536x839.jpeg.webp 1536w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2024\/05\/word-image-39610-1-scaled-1-2048x1119.jpeg.webp 2048w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/164;\">\n  <a href=\"https:\/\/maktabkhooneh.org\/mag\/hoisting-in-js\/\" class=\"zht-related-post-title\"\n    itemprop=\"headline\" target=\"_blank\">\u0622\u0645\u0648\u0632\u0634 Hoisting \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647<\/a>\n<\/section><\/div>\n\n\n<h2 class=\"wp-block-heading\">\u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0631 \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647<\/h2>\n\n\n\n<p>\u0628\u0631\u0627\u06cc \u062a\u0645\u0627\u0645 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u0627\u0646\u060c \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u0632\u0628\u0627\u0646 \u0642\u062f\u0631\u062a\u0645\u0646\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0633\u0648\u062f\u0645\u0646\u062f \u0648 \u0645\u0641\u06cc\u062f \u0628\u0627\u0634\u062f. \u0627\u06cc\u0646 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc \u0632\u06cc\u0627\u062f\u06cc \u0628\u0631\u0627\u06cc \u062a\u0648\u0644\u06cc\u062f \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0647\u0627\u06cc \u062a\u062d\u062a \u0648\u0628 \u0648 \u0627\u067e\u0644\u06cc\u06a9\u06cc\u0634\u0646\u200c\u0647\u0627 \u062f\u0627\u0631\u062f. \u0627\u06af\u0631 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u062f \u0635\u0641\u0631 \u062a\u0627 \u0635\u062f \u0632\u0628\u0627\u0646 javascript \u0631\u0627 \u06cc\u0627\u062f \u0628\u06af\u06cc\u0631\u06cc\u062f\u060c \u0634\u0631\u06a9\u062a \u062f\u0631 \u062f\u0648\u0631\u0647\u200c\u0647\u0627\u06cc <a href=\"https:\/\/maktabkhooneh.org\/learn\/java-script\">\u0622\u0645\u0648\u0632\u0634 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u0648 <a href=\"https:\/\/maktabkhooneh.org\/learn\/programming\">\u0622\u0645\u0648\u0632\u0634 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc<\/a> \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647\u060c \u0627\u0632 \u0628\u0647\u062a\u0631\u06cc\u0646 \u0645\u0646\u0627\u0628\u0639\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u062f\u0646\u0628\u0627\u0644 \u06a9\u0646\u06cc\u062f. \u062f\u0631 \u067e\u0627\u06cc\u0627\u0646 \u0627\u06cc\u0646 \u062f\u0648\u0631\u0647\u200c\u0647\u0627 \u0628\u0627 \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u0639\u0645\u0644\u06cc \u0648 \u0645\u0647\u0627\u0631\u062a \u0645\u062d\u0648\u0631 \u0632\u0628\u0627\u0646 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0648\u0631\u0648\u062f \u0628\u0647 \u0632\u0645\u06cc\u0646\u0647\u200c\u06cc \u062d\u0631\u0641\u0647\u200c\u0627\u06cc \u0631\u0627 \u062e\u0648\u0627\u0647\u06cc\u062f \u062f\u0627\u0634\u062a.<\/p>\n\n\n\n<p>\u0631\u0641\u0631\u0646\u0633: <a href=\"https:\/\/www.geeksforgeeks.org\/javascript\/javascript-scope\/\" rel=\"nofollow noopener\" target=\"_blank\">geeksforgeeks<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scope \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0628\u0647 \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0627\u06cc \u0627\u0634\u0627\u0631\u0647 \u062f\u0627\u0631\u062f \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u062f\u0631 \u0622\u0646 \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0648 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0633\u062a. \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u062d\u0648\u0632\u0647 \u0646\u0634\u0627\u0646\u200c\u062f\u0647\u0646\u062f\u0647 \u0645\u062d\u062f\u0648\u062f\u0647\u200c\u0627\u06cc \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u062f\u0631 \u0622\u0646 \u0642\u0627\u0628\u0644 \u062f\u0633\u062a\u0631\u0633\u06cc 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[&hellip;]<\/p>\n","protected":false},"author":28,"featured_media":39702,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,30,12],"tags":[],"class_list":["post-39696","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming-and-it-training","category-web-programming-articles","category-java-script-articles"],"_links":{"self":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/39696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/users\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/comments?post=39696"}],"version-history":[{"count":5,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/39696\/revisions"}],"predecessor-version":[{"id":65569,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/39696\/revisions\/65569"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/media\/39702"}],"wp:attachment":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/media?parent=39696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/categories?post=39696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/tags?post=39696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}