{"id":29657,"date":"2022-04-18T18:07:45","date_gmt":"2022-04-18T13:37:45","guid":{"rendered":"https:\/\/wpadmin.maktabkhooneh.org\/mag\/?p=29657"},"modified":"2026-04-06T18:03:29","modified_gmt":"2026-04-06T14:33:29","slug":"variable-in-javascript","status":"publish","type":"post","link":"https:\/\/maktabkhooneh.org\/mag\/variable-in-javascript\/","title":{"rendered":"\u0635\u0641\u0631 \u062a\u0627 \u0635\u062f \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a"},"content":{"rendered":"\n<p>\u062f\u0631 \u0627\u06cc\u0646 \u067e\u0633\u062a \u0622\u0645\u0648\u0632\u0634\u06cc \u0627\u0632 \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647 \u0642\u0631\u0627\u0631 \u0627\u0633\u062a \u062f\u0631 \u0631\u0627\u0628\u0637\u0647 \u0628\u0627 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0627 \u0647\u0645 \u0628\u0647 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\u0648 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0647\u0627\u0646\u06cc. \u0642\u0628\u0644 \u0627\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0628\u0627\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f. \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0628\u0647\u200c\u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0639\u0644\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0647\u0646\u06af\u0627\u0645 \u0627\u0639\u0644\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a (\u0647\u0645\u0686\u0646\u06cc\u0646 \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 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\u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u062d\u0631\u0648\u0641 \u0628\u0632\u0631\u06af \u0648 \u06a9\u0648\u0686\u06a9 \u062d\u0633\u0627\u0633 \u0647\u0633\u062a\u0646\u062f\u060c \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644 x \u0648 X \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0645\u062a\u0641\u0627\u0648\u062a\u06cc \u0647\u0633\u062a\u0646\u062f.<\/li>\n<\/ul>\n\n\n\n<p>\u0645\u062b\u0627\u0644 \u0627\u0632 \u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 JavaScript :<\/p>\n\n\n\n<p><strong>\u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0635\u062d\u06cc\u062d:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = 10;\nvar _value=\"sonoo\"; <\/code><\/pre>\n\n\n\n<p><strong>\u0646\u0627\u0645 \u06af\u0630\u0627\u0631\u06cc \u063a\u0644\u0637:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var  123=30;\nvar *aa=320;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u062b\u0627\u0644\u200c\u0647\u0627\u06cc\u06cc \u0627\u0632 \u0628\u0647 \u06a9\u0627\u0631 \u0628\u0631\u062f\u0646 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a:<\/h3>\n\n\n\n<p>\u0642\u0628\u0644 \u0627\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u06cc\u06a9 \u0628\u0631\u0646\u0627\u0645\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0628\u0627\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f. \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0628\u0647\u200c\u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0639\u0644\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var money;\n var name;<\/code><\/pre>\n\n\n\n<p>\u0647\u0645\u0686\u0646\u06cc\u0646 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0686\u0646\u062f\u06cc\u0646 \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0628\u0647\u200c\u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var money, name;<\/code><\/pre>\n\n\n\n<p>\u0630\u062e\u06cc\u0631\u0647 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u062f\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631\u060c \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0645\u062a\u063a\u06cc\u0631 \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0634\u0645\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0627\u06cc\u062c\u0627\u062f \u0645\u062a\u063a\u06cc\u0631 \u06cc\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u062f\u06cc\u06af\u0631\u06cc \u06a9\u0647 \u0628\u0647 \u0622\u0646 \u0645\u062a\u063a\u06cc\u0631 \u0646\u06cc\u0627\u0632 \u062f\u0627\u0631\u06cc\u062f \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u062f.<\/p>\n\n\n\n<p>\u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644\u060c \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0645\u062a\u063a\u06cc\u0631\u06cc \u0628\u0647 \u0646\u0627\u0645 money \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f \u0648 \u0628\u0639\u062f\u0627\u064b \u0645\u0642\u062f\u0627\u0631 \u06f2\u06f0\u06f0\u06f0.\u06f5\u06f0 \u0631\u0627 \u0628\u0647 \u0622\u0646 \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0647\u06cc\u062f. \u0628\u0631\u0627\u06cc \u0645\u062a\u063a\u06cc\u0631 \u062f\u06cc\u06af\u0631\u06cc\u060c \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u06cc\u062f \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631 \u0631\u0627 \u062f\u0631 \u0632\u0645\u0627\u0646 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0628\u0647\u200c\u0635\u0648\u0631\u062a \u0632\u06cc\u0631 \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0647\u06cc\u062f.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code> var name = \"Ali\";\n  var money;\n  money = 2000.50;<\/code><\/pre>\n\n\n\n<p>\u0646\u06a9\u062a\u0647 &#8211; \u0627\u0632 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0641\u0642\u0637 \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0646 \u06cc\u0627 \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f\u060c \u06cc\u0639\u0646\u06cc \u06cc\u06a9\u200c\u0628\u0627\u0631 \u062f\u0631 \u0637\u0648\u0644 \u0639\u0645\u0631 \u0647\u0631 \u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u06cc\u06a9 \u0633\u0646\u062f. \u0634\u0645\u0627 \u0646\u0628\u0627\u06cc\u062f \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u062f\u0648 \u0628\u0627\u0631 \u0645\u062c\u062f\u062f\u0627\u064b \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f.<\/p>\n\n\n\n<p>\u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u06cc\u06a9\u200c\u0632\u0628\u0627\u0646 \u062a\u0627\u06cc\u067e \u0646\u0634\u062f\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0628\u062f\u0627\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0645\u0642\u062f\u0627\u0631\u06cc \u0627\u0632 \u0647\u0631 \u0646\u0648\u0639 \u062f\u0627\u062f\u0647\u200c\u0627\u06cc \u0631\u0627 \u062f\u0631 \u062e\u0648\u062f \u0646\u06af\u0647 \u062f\u0627\u0631\u062f. \u0628\u0631\u062e\u0644\u0627\u0641 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0632\u0628\u0627\u0646\u200c\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631\u060c \u0644\u0627\u0632\u0645 \u0646\u06cc\u0633\u062a \u0628\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0631 \u062d\u06cc\u0646 \u0627\u0639\u0644\u0627\u0646 \u0645\u062a\u063a\u06cc\u0631 \u0628\u06af\u0648\u06cc\u06cc\u062f \u06a9\u0647 \u0645\u062a\u063a\u06cc\u0631 \u0686\u0647 \u0646\u0648\u0639 \u0645\u0642\u062f\u0627\u0631\u06cc \u0631\u0627 \u0646\u06af\u0647 \u0645\u06cc\u200c\u062f\u0627\u0631\u062f. \u0646\u0648\u0639 \u0645\u0642\u062f\u0627\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062f\u0631 \u062d\u06cc\u0646 \u0627\u062c\u0631\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f \u0648 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647\u200c\u0637\u0648\u0631 \u062e\u0648\u062f\u06a9\u0627\u0631 \u0627\u0632 \u0622\u0646 \u0645\u0631\u0627\u0642\u0628\u062a \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/p>\n\n\n\n<p>\u0645\u062b\u0627\u0644\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0632 \u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var x = 10;\nvar y = 20;\nvar z=x+y;\ndocument.write(z);<\/code><\/pre>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u0628\u0647 \u0634\u06a9\u0644 \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" width=\"960\" height=\"720\" src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide2-1.jpg\" alt=\"\u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" class=\"wp-image-29662\" title=\"\" srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide2-1.jpg 960w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide2-1-300x225.jpg 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide2-1-768x576.jpg.webp 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u062a\u0641\u0627\u0648\u062a \u0628\u06cc\u0646 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc let \u0648 var<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var: <\/strong>\u0647\u0645\u0627\u0646\u0637\u0648\u0631\u06a9\u0647 \u06af\u0641\u062a\u06cc\u0645\u060c \u062f\u0633\u062a\u0648\u0631 var \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0646 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0627\u0639\u0644\u0627\u0645\u200c\u0634\u062f\u0647 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u062a\u0639\u0631\u06cc\u0641\u200c\u0634\u062f\u0647 \u0627\u0633\u062a.<\/li>\n\n\n\n<li><strong>\u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc let: <\/strong>\u062f\u0633\u062a\u0648\u0631 let \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0645 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc \u062f\u0631 TypeScript \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0634\u0628\u06cc\u0647 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0627\u0633\u062a\u060c \u0627\u0645\u0627 \u062f\u0631 \u0645\u0642\u0627\u06cc\u0633\u0647 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u0645\u062d\u062f\u0648\u062f\u06cc\u062a\u200c\u0647\u0627\u06cc\u06cc \u062f\u0631 \u0645\u062d\u062f\u0648\u062f\u0647 \u062f\u0627\u0631\u062f. \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc let \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062e\u0648\u0627\u0646\u0627\u06cc\u06cc \u06a9\u062f \u0645\u0627 \u0631\u0627 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0647\u062f \u0648 \u0627\u062d\u062a\u0645\u0627\u0644 \u062e\u0637\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0646\u0648\u06cc\u0633\u06cc \u0631\u0627 \u06a9\u0627\u0647\u0634 \u062f\u0647\u062f. \u0645\u062a\u063a\u06cc\u0631\u06cc \u06a9\u0647 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc let \u0627\u0639\u0644\u0627\u0645\u200c\u0634\u062f\u0647 \u0627\u0633\u062a \u0641\u0642\u0637 \u0628\u0647 \u0645\u062d\u062f\u0648\u062f\u0647 \u0628\u0644\u0648\u06a9 \u0645\u062d\u062f\u0648\u062f \u0645\u06cc\u200c\u0634\u0648\u062f.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u0627\u0646\u0648\u0627\u0639 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u0645\u0627\u0646\u0646\u062f \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0632\u0628\u0627\u0646\u200c\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0646\u0648\u06cc\u0633\u06cc \u062f\u06cc\u06af\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0646\u06cc\u0632 \u062f\u0648 \u0646\u0648\u0639 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0627\u0631\u06cc\u0645. \u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u0648 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc. \u062f\u0631 \u0628\u0627\u0644\u0627 \u06cc\u0647 \u0627\u0634\u0627\u0631\u0647 \u06a9\u0648\u0686\u06a9\u06cc \u0628\u0647 \u0627\u06cc\u0646 \u0646\u0648\u0639 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0627\u0634\u062a\u06cc\u0645 \u062f\u0631 \u0627\u062f\u0627\u0645\u0647 \u0628\u0627 \u0627\u0631\u0627\u0626\u0647 \u0646\u0645\u0648\u0646\u0647\u200c\u0647\u0627\u06cc \u0639\u0645\u0644\u06cc \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u06cc\u0627\u062f \u0645\u06cc\u200c\u06af\u06cc\u0631\u06cc\u0645.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"960\" height=\"720\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide5.jpg\" alt=\"\u0627\u0646\u0648\u0627\u0639 \u0645\u062a\u0641\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" class=\"wp-image-29665 lazyload\" title=\"\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide5.jpg 960w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide5-300x225.jpg.webp 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide5-768x576.jpg.webp 768w\" data-sizes=\"(max-width: 960px) 100vw, 960px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 960px; --smush-placeholder-aspect-ratio: 960\/720;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0645\u062d\u0644\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0631 \u062f\u0627\u062e\u0644 \u0628\u0644\u0648\u06a9 \u06cc\u0627 \u062a\u0627\u0628\u0639 \u0627\u0639\u0644\u0627\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0641\u0642\u0637 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062a\u0627\u0628\u0639 \u06cc\u0627 \u0628\u0644\u0648\u06a9 \u0642\u0627\u0628\u0644\u200c\u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0633\u062a. \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc \u0641\u0642\u0637 \u062f\u0631 \u062a\u0627\u0628\u0639\u06cc \u06a9\u0647 \u062f\u0631 \u0622\u0646 \u062a\u0639\u0631\u06cc\u0641\u200c\u0634\u062f\u0647 \u0627\u0633\u062a \u0642\u0627\u0628\u0644\u200c\u0645\u0634\u0627\u0647\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f \u0648 \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u062a\u0627\u0628\u0639 \u0647\u0645\u06cc\u0634\u0647 \u0645\u062d\u0644\u06cc \u0628\u0631\u0627\u06cc \u0622\u0646 \u062a\u0627\u0628\u0639 \u0647\u0633\u062a\u0646\u062f. \u0645\u062b\u0644\u0627\u064b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function abc(){\nvar x=10;\/\/local variable\n}\n<\/code><\/pre>\n\n\n\n<p>\u06cc\u0627<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>If(10&lt;13){\nvar y=20;\/\/JavaScript local variable\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0632 \u0647\u0631 \u062a\u0627\u0628\u0639\u06cc \u0642\u0627\u0628\u0644\u200c\u062f\u0633\u062a\u0631\u0633\u06cc \u0627\u0633\u062a. \u0645\u062a\u063a\u06cc\u0631\u06cc \u06a9\u0647 \u062e\u0627\u0631\u062c \u0627\u0632 \u062a\u0627\u0628\u0639 \u0627\u0639\u0644\u0627\u0646\u200c\u0634\u062f\u0647 \u06cc\u0627 \u0628\u0627 \u0634\u06cc \u067e\u0646\u062c\u0631\u0647 \u0627\u0639\u0644\u0627\u0646\u200c\u0634\u062f\u0647 \u0628\u0627\u0634\u062f \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0647\u0627\u0646\u06cc \u0634\u0646\u0627\u062e\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0628\u0647\u200c\u0639\u0628\u0627\u0631\u062a\u06cc\u200c\u062f\u06cc\u06af\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u062f\u0627\u0631\u0627\u06cc \u062f\u0627\u0645\u0646\u0647 \u062c\u0647\u0627\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0622\u0646 \u0631\u0627 \u062f\u0631 \u0647\u0631\u062c\u0627\u06cc\u06cc \u0627\u0632 \u06a9\u062f \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0631\u062f. \u0645\u062b\u0644\u0627\u064b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var data=200;\/\/gloabal variable\nfunction a(){\ndocument.writeln(data);\n}\nfunction b(){\ndocument.writeln(data);\n}\na();\/\/calling JavaScript function\nb();\n<\/code><\/pre>\n\n\n\n<p><strong>\u0646\u06a9\u062a\u0647 \u0645\u0647\u0645:<\/strong><br>\n\u062f\u0631 \u0628\u062f\u0646\u0647 \u06cc\u06a9 \u062a\u0627\u0628\u0639\u060c \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc \u0628\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u0628\u0627 \u0647\u0645\u0627\u0646 \u0646\u0627\u0645 \u0627\u0648\u0644\u0648\u06cc\u062a \u062f\u0627\u0631\u062f. \u0627\u06af\u0631 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062d\u0644\u06cc \u06cc\u0627 \u067e\u0627\u0631\u0627\u0645\u062a\u0631 \u062a\u0627\u0628\u0639 \u0631\u0627 \u0628\u0627 \u0647\u0645\u0627\u0646 \u0646\u0627\u0645 \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0647\u0627\u0646\u06cc \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f\u060c \u0628\u0647\u200c\u0637\u0648\u0631 \u0645\u0624\u062b\u0631 \u0645\u062a\u063a\u06cc\u0631 \u0633\u0631\u0627\u0633\u0631\u06cc \u0631\u0627 \u062f\u0631 \u0622\u0646 \u062a\u0627\u0628\u0639 \u0628\u06cc\u200c\u0627\u062b\u0631 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u062f. \u0628\u0647 \u0645\u062b\u0627\u0644 \u0632\u06cc\u0631 \u062f\u0642\u062a \u06a9\u0646\u06cc\u062f.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var myVar = \"global\";      \/\/ Declare a global variable\n function checkscope( ) {\n var myVar = \"local\";    \/\/ Declare a local variable\n document.write(myVar);\n          }<\/code><\/pre>\n\n\n\n<p>\u062e\u0631\u0648\u062c\u06cc \u0628\u0647 \u0634\u06a9\u0644 \u0632\u06cc\u0631 \u0627\u0633\u062a:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"960\" height=\"720\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide3-1.jpg\" alt=\"\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" class=\"wp-image-29663 lazyload\" title=\"\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide3-1.jpg 960w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide3-1-300x225.jpg 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide3-1-768x576.jpg.webp 768w\" data-sizes=\"(max-width: 960px) 100vw, 960px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 960px; --smush-placeholder-aspect-ratio: 960\/720;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u0647\u0646\u06af\u0627\u0645 \u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0642\u0648\u0627\u0646\u06cc\u0646 \u0632\u06cc\u0631 \u0631\u0627 \u062f\u0631 \u0646\u0638\u0631 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f. \u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0635\u062d\u06cc\u062d \u062a\u063a\u06cc\u06cc\u0631\u0647\u0627 \u0628\u0627\u06cc\u062f \u0627\u0632 \u0642\u0648\u0627\u0639\u062f \u0632\u06cc\u0631 \u067e\u06cc\u0631\u0648\u06cc \u06a9\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<ul class=\"wp-block-list\">\n<li>\u0634\u0645\u0627 \u0646\u0628\u0627\u06cc\u062f \u0627\u0632 \u0647\u06cc\u0686\u200c\u06cc\u06a9 \u0627\u0632 \u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646 \u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. \u0627\u06cc\u0646 \u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc \u062f\u0631 \u0628\u062e\u0634 \u0628\u0639\u062f\u06cc \u0630\u06a9\u0631\u0634\u062f\u0647 \u0627\u0633\u062a. \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646\u200c\u0645\u062b\u0627\u0644\u060c \u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc break \u06cc\u0627 boolean \u0645\u0639\u062a\u0628\u0631 \u0646\u06cc\u0633\u062a\u0646\u062f.<\/li>\n\n\n\n<li>\u00a0\u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0646\u0628\u0627\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u0639\u062f\u062f (\u06f0-\u06f9) \u0634\u0631\u0648\u0639 \u0634\u0648\u062f. \u0622\u0646\u200c\u0647\u0627 \u0628\u0627\u06cc\u062f \u0628\u0627 \u06cc\u06a9 \u062d\u0631\u0641 \u06cc\u0627 \u06cc\u06a9 \u06a9\u0627\u0631\u0627\u06a9\u062a\u0631 \u0632\u06cc\u0631\u062e\u0637 \u0634\u0631\u0648\u0639 \u0634\u0648\u0646\u062f. \u0628\u0647\u200c\u0639\u0646\u0648\u0627\u0646\u200c\u0645\u062b\u0627\u0644\u060c 123test \u06cc\u06a9 \u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u0646\u0627\u0645\u0639\u062a\u0628\u0631 \u0627\u0633\u062a \u0627\u0645\u0627 _123test \u06cc\u06a9 \u0646\u0627\u0645 \u0645\u0639\u062a\u0628\u0631 \u0627\u0633\u062a.<\/li>\n\n\n\n<li>\u00a0\u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u062d\u0631\u0648\u0641 \u0628\u0632\u0631\u06af \u0648 \u06a9\u0648\u0686\u06a9 \u062d\u0633\u0627\u0633 \u0647\u0633\u062a\u0646\u062f. \u0628\u0631\u0627\u06cc \u0645\u062b\u0627\u0644 Name \u0648 name \u062f\u0648 \u0645\u062a\u063a\u06cc\u0631 \u0645\u062a\u0641\u0627\u0648\u062a \u0647\u0633\u062a\u0646\u062f.<\/li>\n\n\n\n<li>\u0647\u0633\u062a\u0646\u062f.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u06a9\u0644\u0645\u0627\u062a \u0631\u0632\u0648 \u0634\u062f\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>\u0644\u06cc\u0633\u062a\u06cc \u0627\u0632 \u062a\u0645\u0627\u0645 \u06a9\u0644\u0645\u0627\u062a \u0631\u0632\u0631\u0648 \u0634\u062f\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u062f\u0631 \u062c\u062f\u0648\u0644 \u0632\u06cc\u0631 \u0622\u0648\u0631\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0622\u0646\u200c\u0647\u0627 \u0631\u0627 \u0646\u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0631\u0627\u06cc \u0646\u0627\u0645\u200c\u06af\u0630\u0627\u0631\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u062a\u0648\u0627\u0628\u0639\u060c \u0645\u062a\u062f\u0647\u0627\u060c \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627\u06cc \u062d\u0644\u0642\u0647 \u06cc\u0627 \u0647\u0631 \u0646\u0627\u0645 \u0634\u06cc \u0645\u0648\u0631\u062f\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0642\u0631\u0627\u0631\u062f\u0627\u062f.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>abstract<\/td><td>else<\/td><td>instanceof<\/td><td>switch<\/td><\/tr><tr><td>boolean<\/td><td>enum<\/td><td>int<\/td><td>synchronized<\/td><\/tr><tr><td>break<\/td><td>export<\/td><td>interface<\/td><td>this<\/td><\/tr><tr><td>byte<\/td><td>extends<\/td><td>long<\/td><td>throw<\/td><\/tr><tr><td>case<\/td><td>false<\/td><td>native<\/td><td>throws<\/td><\/tr><tr><td>catch<\/td><td>final<\/td><td>new<\/td><td>transient<\/td><\/tr><tr><td>char<\/td><td>finally<\/td><td>null<\/td><td>true<\/td><\/tr><tr><td>class<\/td><td>float<\/td><td>package<\/td><td>try<\/td><\/tr><tr><td>const<\/td><td>for<\/td><td>private<\/td><td>typeof<\/td><\/tr><tr><td>continue<\/td><td>function<\/td><td>protected<\/td><td>var<\/td><\/tr><tr><td>debugger<\/td><td>goto<\/td><td>public<\/td><td>void<\/td><\/tr><tr><td>default<\/td><td>if<\/td><td>return<\/td><td>volatile<\/td><\/tr><tr><td>delete<\/td><td>implements<\/td><td>short<\/td><td>while<\/td><\/tr><tr><td>do<\/td><td>import<\/td><td>static<\/td><td>with<\/td><\/tr><tr><td>double<\/td><td>in<\/td><td>super<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u062b\u0627\u0628\u062a\u200c\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u06cc\u06a9 \u062b\u0627\u0628\u062a \u062f\u0627\u0631\u0627\u06cc \u0645\u0642\u062f\u0627\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u0646\u0645\u06cc\u200c\u06a9\u0646\u062f. \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0645 \u06cc\u06a9 \u062b\u0627\u0628\u062a\u060c \u0627\u0632 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc const \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u062f. \u0647\u0646\u06af\u0627\u0645 \u062a\u0639\u0631\u06cc\u0641 \u06cc\u06a9 \u062b\u0627\u0628\u062a\u060c \u0628\u0627\u06cc\u062f \u0622\u0646 \u0631\u0627 \u0628\u0627 \u06cc\u06a9 \u0645\u0642\u062f\u0627\u0631\u060c \u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0627\u0648\u0644\u06cc\u0647 \u06a9\u0646\u06cc\u062f. \u0645\u062b\u0644\u0627\u064b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>const workday = 5;<\/code><\/pre>\n\n\n\n<p>\u062f\u0631 \u0686\u0646\u06cc\u0646 \u0634\u0631\u0627\u06cc\u0637\u06cc \u0628\u0627 \u062e\u0637\u0627\u06cc \u0632\u06cc\u0631 \u0645\u0648\u0627\u062c\u0647 \u0645\u06cc\u200c\u0634\u0648\u06cc\u0645:<\/p>\n\n\n\n<p class=\"has-text-align-left\">Uncaught TypeError: Assignment to constant variable<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u06f4 \u0631\u0648\u0634 \u0628\u0631\u0627\u06cc \u0627\u0639\u0644\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a:<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" width=\"960\" height=\"720\" data-src=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide4.jpg\" alt=\"\u0627\u0639\u0644\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\" class=\"wp-image-29664 lazyload\" title=\"\" data-srcset=\"https:\/\/maktabkhooneh.org\/mag\/wp-content\/uploads\/2022\/04\/Slide4.jpg 960w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide4-300x225.jpg.webp 300w, https:\/\/maktabkhooneh.org\/mag\/wp-content\/smush-webp\/2022\/04\/Slide4-768x576.jpg.webp 768w\" data-sizes=\"(max-width: 960px) 100vw, 960px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 960px; --smush-placeholder-aspect-ratio: 960\/720;\" \/><figcaption><\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 var<\/li>\n\n\n\n<li>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 let<\/li>\n\n\n\n<li>\u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 const<\/li>\n\n\n\n<li>\u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0628\u062f\u0648\u0646 \u062a\u0639\u0631\u06cc\u0641<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0686\u0647 \u0632\u0645\u0627\u0646\u06cc \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a var \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645\u061f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0647\u0645\u06cc\u0634\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u0627 var,let, orconst \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f.<\/li>\n\n\n\n<li>\u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc var \u062f\u0631 \u062a\u0645\u0627\u0645\u06cc \u06a9\u062f\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0632 \u0633\u0627\u0644 \u06f1\u06f9\u06f9\u06f5 \u062a\u0627 \u06f2\u06f0\u06f1\u06f5 \u0627\u0633\u062a\u0641\u0627\u062f\u0647\u200c\u0634\u062f\u0647 \u0627\u0633\u062a.<\/li>\n\n\n\n<li>\u06a9\u0644\u0645\u0627\u062a \u06a9\u0644\u06cc\u062f\u06cc let \u0648 const \u062f\u0631 \u0633\u0627\u0644 \u06f2\u06f0\u06f1\u06f5 \u0628\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0636\u0627\u0641\u0647 \u0634\u062f\u0646\u062f.<\/li>\n\n\n\n<li>\u0627\u06af\u0631 \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u062f \u06a9\u062f \u0634\u0645\u0627 \u062f\u0631 \u0645\u0631\u0648\u0631\u06af\u0631 \u0642\u062f\u06cc\u0645\u06cc \u0627\u062c\u0631\u0627 \u0634\u0648\u062f\u060c \u0628\u0627\u06cc\u062f \u0627\u0632 var \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0686\u0647 \u0632\u0645\u0627\u0646\u06cc \u0627\u0632 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u0645\u061f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u06af\u0631 \u06cc\u06a9 \u0642\u0627\u0646\u0648\u0646 \u06a9\u0644\u06cc \u0645\u06cc\u200c\u062e\u0648\u0627\u0647\u06cc\u062f: \u0647\u0645\u06cc\u0634\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0631\u0627 \u0628\u0627 const \u0627\u0639\u0644\u0627\u0645 \u06a9\u0646\u06cc\u062f.<\/li>\n\n\n\n<li>\u0627\u06af\u0631 \u0641\u06a9\u0631 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u062f \u0645\u0642\u062f\u0627\u0631 \u0645\u062a\u063a\u06cc\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u062a\u063a\u06cc\u06cc\u0631 \u06a9\u0646\u062f\u060c \u0627\u0632 let \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n\n\n\n<li>\u062f\u0631 \u0627\u06cc\u0646 \u0645\u062b\u0627\u0644\u060c price1\u060c price2 \u0648 total \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc\u06cc \u0647\u0633\u062a\u0646\u062f:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>const price1 = 5;\nconst price2 = 6;\nlet total = price1 + price2;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062f\u0648 \u0645\u062a\u063a\u06cc\u0631 price1 \u0648 price2 \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc const \u0627\u0639\u0644\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0627\u06cc\u0646 \u0645\u0642\u0627\u062f\u06cc\u0631 \u062b\u0627\u0628\u062a \u0647\u0633\u062a\u0646\u062f \u0648 \u0642\u0627\u0628\u0644\u200c\u062a\u063a\u06cc\u06cc\u0631 \u0646\u06cc\u0633\u062a\u0646\u062f.<\/li>\n\n\n\n<li>\u0645\u062a\u063a\u06cc\u0631 total \u0628\u0627 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc let \u0627\u0639\u0644\u0627\u0645 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0627\u06cc\u0646 \u0645\u0642\u062f\u0627\u0631\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0642\u0627\u0628\u0644\u200c\u062a\u063a\u06cc\u06cc\u0631 \u0627\u0633\u062a.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u0645\u0642\u062f\u0627\u0631\u062f\u0647\u06cc \u0628\u0647 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u062f\u0648\u0646 \u062a\u0639\u0631\u06cc\u0641 \u0622\u0646<\/h3>\n\n\n\n<p>\u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0647\u0627\u06cc \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631\u06cc\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0627\u063a\u0644\u0628 \u0628\u062f\u0648\u0646 \u0645\u0642\u062f\u0627\u0631 \u0627\u0639\u0644\u0627\u0646 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. \u0645\u0642\u062f\u0627\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0686\u06cc\u0632\u06cc \u0628\u0627\u0634\u062f \u06a9\u0647 \u0628\u0627\u06cc\u062f \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u0648\u062f\u060c \u06cc\u0627 \u0686\u06cc\u0632\u06cc \u06a9\u0647 \u0628\u0639\u062f\u0627\u064b \u0627\u0631\u0627\u0626\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0645\u0627\u0646\u0646\u062f \u0648\u0631\u0648\u062f\u06cc \u06a9\u0627\u0631\u0628\u0631. \u0645\u062a\u063a\u06cc\u0631\u06cc \u06a9\u0647 \u0628\u062f\u0648\u0646 \u0645\u0642\u062f\u0627\u0631 \u0627\u0639\u0644\u0627\u0645\u200c\u0634\u062f\u0647 \u0628\u0627\u0634\u062f\u060c \u0645\u0642\u062f\u0627\u0631 \u0622\u0646 \u062a\u0639\u0631\u06cc\u0641\u200c\u0646\u0634\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f.<\/p>\n\n\n\n<p>\u062f\u0631 \u0645\u062b\u0627\u0644 \u0632\u06cc\u0631 \u0645\u062a\u063a\u06cc\u0631 carName \u067e\u0633 \u0627\u0632 \u0627\u062c\u0631\u0627\u06cc \u0627\u06cc\u0646 \u062f\u0633\u062a\u0648\u0631 \u062f\u0627\u0631\u0627\u06cc \u0645\u0642\u062f\u0627\u0631 \u062a\u0639\u0631\u06cc\u0641\u200c\u0646\u0634\u062f\u0647 \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>let carName;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a: \u067e\u0627\u06cc\u0647 \u0648 \u0627\u0633\u0627\u0633 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc<\/h2>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0647\u0645 \u062a\u0631\u06cc\u0646 \u0645\u0641\u0627\u0647\u06cc\u0645 \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0647\u0633\u062a\u0646\u062f\u060c \u0686\u0647 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0648 \u0686\u0647 \u062f\u0631 \u0647\u0631 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u062f\u06cc\u06af\u0631\u06cc. \u0622\u0646\u0647\u0627 \u0628\u0644\u0648\u06a9 \u0647\u0627\u06cc \u0633\u0627\u0632\u0646\u062f\u0647 \u06a9\u062f \u0634\u0645\u0627 \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u0646\u062f \u0645\u0642\u0627\u062f\u06cc\u0631 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0648 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0646\u06cc\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0628\u062e\u0634\u060c \u0628\u0647 \u0628\u0631\u0631\u0633\u06cc \u0639\u0645\u06cc\u0642 \u0648\u0627\u0631\u06cc\u0628\u0644 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0627\u0632 \u062c\u0645\u0644\u0647 \u0627\u0646\u0648\u0627\u0639 \u0645\u062e\u062a\u0644\u0641 \u0622\u0646\u0647\u0627\u060c \u0646\u062d\u0648\u0647 \u062a\u0639\u0631\u06cc\u0641 \u0648 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0648 \u0628\u0647\u062a\u0631\u06cc\u0646 \u0631\u0648\u0634 \u0647\u0627 \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646\u0647\u0627 \u0645\u06cc \u067e\u0631\u062f\u0627\u0632\u06cc\u0645.<\/p>\n\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><a href=\"https:\/\/maktabkhooneh.org\/mag\/var-in-javascript\/\">var \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u0642\u062f\u06cc\u0645\u06cc \u062a\u0631\u06cc\u0646 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a. \u0628\u0647 \u0633\u0627\u062f\u06af\u06cc \u0628\u0647 \u062f\u0646\u0628\u0627\u0644 \u0646\u0627\u0645 \u0645\u062a\u063a\u06cc\u0631 \u0648 \u0639\u0644\u0627\u0645\u062a \u0645\u0633\u0627\u0648\u06cc (=) \u0645\u0642\u062f\u0627\u0631 \u0627\u0648\u0644\u06cc\u0647 \u0622\u0646 \u0645\u06cc \u0622\u06cc\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var message = \"Hello, world!\";<\/pre>\n\n\n\n<p>\u0627\u06cc\u0646 \u06a9\u062f \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 \u0628\u0647 \u0646\u0627\u0645 `message` \u0628\u0627 \u0645\u0642\u062f\u0627\u0631 \u0627\u0648\u0644\u06cc\u0647 `&#8221;Hello, world!&#8221;\u200e` \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;Let \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h3>\n\n\n\n<p>`let` \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc \u0645\u062f\u0631\u0646 \u062a\u0631\u06cc \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a. \u0628\u0647 `var` \u0634\u0628\u0627\u0647\u062a \u062f\u0627\u0631\u062f\u060c \u0627\u0645\u0627 \u062f\u0627\u0645\u0646\u0647 \u0645\u062a\u063a\u06cc\u0631 \u0631\u0627 \u0645\u062d\u062f\u0648\u062f\u062a\u0631 \u0645\u06cc \u06a9\u0646\u062f. \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0634\u062f\u0647 \u0628\u0627 `let` \u0641\u0642\u0637 \u062f\u0631 \u0628\u0644\u0648\u06a9 \u0627\u0633\u06a9\u0648\u067e \u062e\u0648\u062f \u062f\u0631 \u062f\u0633\u062a\u0631\u0633 \u0647\u0633\u062a\u0646\u062f\u060c \u06a9\u0647 \u0628\u0647 \u0637\u0648\u0631 \u06a9\u0644\u06cc \u0628\u0644\u0648\u06a9 \u06a9\u062f\u06cc \u0645\u062d\u0635\u0648\u0631 \u0634\u062f\u0647 \u062f\u0631 \u0622\u06a9\u0648\u0644\u0627\u062f ({}) \u0627\u0633\u062a. \u0645\u0632\u06cc\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 `let` \u0627\u06cc\u0646 \u0627\u0633\u062a \u06a9\u0647 \u0628\u0647 \u0648\u0636\u0648\u062d \u062f\u0627\u0645\u0646\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0631\u0627 \u0645\u0634\u062e\u0635 \u0645\u06cc \u06a9\u0646\u062f \u0648 \u0627\u0632 \u062e\u0637\u0627\u0647\u0627\u06cc \u0627\u062d\u062a\u0645\u0627\u0644\u06cc \u0646\u0627\u0634\u06cc \u0627\u0632 \u062a\u062f\u0627\u062e\u0644 \u0646\u0627\u0645 \u0647\u0627 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;\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>\u0639\u0644\u0627\u0648\u0647 \u0628\u0631 \u0645\u062d\u062f\u0648\u062f \u06a9\u0631\u062f\u0646 \u062f\u0627\u0645\u0646\u0647\u060c <a href=\"https:\/\/maktabkhooneh.org\/mag\/let-in-javascript\/\">let \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631\u06cc \u0646\u06cc\u0632 \u062f\u0627\u0631\u062f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u062c\u0627\u0632\u0647 \u0645\u06cc \u062f\u0647\u062f \u0645\u062a\u063a\u06cc\u0631\u06cc \u0628\u0627 \u0647\u0645\u0627\u0646 \u0646\u0627\u0645 \u062f\u0631 \u0628\u0644\u0648\u06a9 \u0647\u0627\u06cc \u0627\u0633\u06a9\u0648\u067e \u0645\u062e\u062a\u0644\u0641 \u062a\u0639\u0631\u06cc\u0641 \u0634\u0648\u062f.<\/li>\n\n\n\n<li>\u0628\u0647 \u0637\u0648\u0631 \u067e\u06cc\u0634 \u0641\u0631\u0636\u060c \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc `let` \u0631\u0627 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646 \u062f\u0648\u0628\u0627\u0631\u0647 \u062a\u0639\u0631\u06cc\u0641 \u06a9\u0631\u062f.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;\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><a href=\"https:\/\/maktabkhooneh.org\/mag\/const-in-javascript\/\">const \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/a> \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062b\u0627\u0628\u062a \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a. \u0645\u0642\u0627\u062f\u06cc\u0631 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc `const` \u063a\u06cc\u0631\u0642\u0627\u0628\u0644 \u062a\u063a\u06cc\u06cc\u0631 \u0647\u0633\u062a\u0646\u062f\u060c \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u06a9\u0647 \u067e\u0633 \u0627\u0632 \u062a\u0639\u0631\u06cc\u0641 \u0646\u0645\u06cc \u062a\u0648\u0627\u0646 \u0622\u0646\u0647\u0627 \u0631\u0627 \u0645\u062c\u062f\u062f\u0627\u064b \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0627\u062f. \u0627\u0632 `const` \u0628\u0631\u0627\u06cc \u0645\u0642\u0627\u062f\u06cc\u0631\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u062f\u0631 \u0637\u0648\u0644 \u0628\u0631\u0646\u0627\u0645\u0647 \u062b\u0627\u0628\u062a \u0645\u06cc \u0645\u0627\u0646\u0646\u062f\u060c \u0645\u0627\u0646\u0646\u062f \u0634\u0646\u0627\u0633\u0647 \u0647\u0627 \u06cc\u0627 \u062b\u0627\u0628\u062a \u0647\u0627\u06cc \u0631\u06cc\u0627\u0636\u06cc.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">&nbsp;Reference type \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 \u0647\u0645\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0627\u0631\u062c\u0627\u0639 \u0628\u0647 \u06cc\u06a9 \u0645\u06a9\u0627\u0646 \u062f\u0631 \u062d\u0627\u0641\u0638\u0647 \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u0645\u0642\u062f\u0627\u0631 \u0622\u0646\u0647\u0627 \u062f\u0631 \u0622\u0646 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0628\u0647 \u0627\u06cc\u0646 \u0645\u0639\u0646\u06cc \u06a9\u0647 \u062f\u0648 \u0645\u062a\u063a\u06cc\u0631 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0628\u0647 \u06cc\u06a9 \u0645\u06a9\u0627\u0646 \u062d\u0627\u0641\u0638\u0647 \u0627\u0634\u0627\u0631\u0647 \u06a9\u0646\u0646\u062f \u0648 \u0647\u0631 \u06af\u0648\u0646\u0647 \u062a\u063a\u06cc\u06cc\u0631 \u062f\u0631 \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0631 \u062f\u06cc\u06af\u0631\u06cc \u0646\u06cc\u0632 \u062a\u0623\u062b\u06cc\u0631 \u0645\u06cc \u06af\u0630\u0627\u0631\u062f.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&nbsp;\u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 jQuery<\/h3>\n\n\n\n<p>\u062f\u0631 jQuery\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631\u0647\u0627\u060c \u0627\u0634\u06cc\u0627\u0621 DOM \u0648 \u0633\u0627\u06cc\u0631 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 jQuery\u060c \u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0632 \u0647\u0645\u0627\u0646 \u0646\u062d\u0648 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">var $message = $(\"#my-message\");<\/pre>\n\n\n\n<p>\u0627\u06cc\u0646 \u06a9\u062f \u06cc\u06a9 \u0645\u062a\u063a\u06cc\u0631 jQuery \u0628\u0647 \u0646\u0627\u0645 `$message` \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f \u06a9\u0647 \u0628\u0647 \u0639\u0646\u0635\u0631 DOM \u0628\u0627 \u0634\u0646\u0627\u0633\u0647 `my-message` \u0627\u0634\u0627\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Function \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a<\/h2>\n\n\n\n<p>\u062a\u0648\u0627\u0628\u0639 \u0628\u0644\u0648\u06a9 \u0647\u0627\u06cc \u06a9\u062f \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u0648\u0638\u0627\u06cc\u0641 \u062e\u0627\u0635\u06cc \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u0645\u06cc \u062f\u0647\u0646\u062f. \u0622\u0646\u0647\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646\u0646\u062f \u0645\u0642\u0627\u062f\u06cc\u0631 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0648\u0631\u0648\u062f\u06cc \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0646\u0646\u062f\u060c \u067e\u0631\u062f\u0627\u0632\u0634 \u0647\u0627\u06cc\u06cc \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u0646\u062f \u0648 \u0645\u0642\u0627\u062f\u06cc\u0631 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062e\u0631\u0648\u062c\u06cc \u0628\u0631\u06af\u0631\u062f\u0627\u0646\u0646\u062f. \u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u062a\u0627\u0628\u0639 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a\u060c \u0627\u0632 \u06a9\u0644\u0645\u0647 \u06a9\u0644\u06cc\u062f\u06cc `function` \u0628\u0647 \u062f\u0646\u0628\u0627\u0644 \u0646\u0627\u0645 \u062a\u0627\u0628\u0639\u060c \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627 (\u062f\u0631 \u0635\u0648\u0631\u062a \u0648\u062c\u0648\u062f) \u0648 \u0628\u0644\u0648\u06a9 \u06a9\u062f \u062a\u0627\u0628\u0639 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0645\u062b\u0627\u0644:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">function greet(name) {\n  console.log(\"Hello, \" + name + \"!\");\n}\n<\/pre>\n\n\n\n<p>\u0627\u06cc\u0646 \u06a9\u062f \u06cc\u06a9 \u062a\u0627\u0628\u0639 \u0628\u0647 \u0646\u0627\u0645 `greet` \u0628\u0627 \u06cc\u06a9 \u067e\u0627\u0631\u0627\u0645\u062a\u0631 \u0628\u0647 \u0646\u0627\u0645 `name` \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc \u06a9\u0646\u062f. \u0627\u06cc\u0646 \u062a\u0627\u0628\u0639 \u06cc\u06a9 \u067e\u06cc\u0627\u0645 \u062e\u0648\u0634\u0627\u0645\u062f\u06af\u0648\u06cc\u06cc \u0631\u0627 \u0628\u0627 \u0646\u0627\u0645 \u0627\u0631\u0627\u0626\u0647 \u0634\u062f\u0647 \u0628\u0647 \u06a9\u0646\u0633\u0648\u0644 \u0686\u0627\u067e \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0646\u062a\u06cc\u062c\u0647\u200c\u06af\u06cc\u0631\u06cc<\/h2>\n\n\n\n<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u0631\u06a9\u0646 \u0645\u0647\u0645 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0648 \u0647\u0631 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0646\u0648\u06cc\u0633\u06cc \u0647\u0633\u062a\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u067e\u0633\u062a \u0622\u0645\u0648\u0632\u0634\u06cc \u0627\u0632 \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647 \u0633\u0639\u06cc \u06a9\u0631\u062f\u06cc\u0645 \u0634\u0645\u0627\u0631\u0627 \u0628\u0627 \u0645\u062a\u063a\u06cc\u0631 \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0622\u0634\u0646\u0627 \u06a9\u0646\u06cc\u0645. \u0628\u0631\u0627\u06cc \u0622\u0634\u0646\u0627\u06cc\u06cc \u0628\u06cc\u0634\u062a\u0631 \u0648 \u0639\u0645\u06cc\u0642\u200c\u062a\u0631 \u0628\u0627 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0634\u0645\u0627 \u0628\u0627\u06cc\u062f \u0628\u06cc\u0634\u062a\u0631 \u062a\u0644\u0627\u0634 \u0648 \u062a\u0645\u0631\u06cc\u0646 \u06a9\u0646\u06cc\u062f. \u06cc\u0627\u062f\u06af\u06cc\u0631\u06cc \u062a\u063a\u06cc\u06cc\u0631\u0647\u0627 \u0648 \u0646\u062d\u0648\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0622\u0646\u200c\u0647\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062a\u0645\u0631\u06cc\u0646\u200c\u0647\u0627\u06cc \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0646\u0648\u06cc\u0633\u06cc \u0628\u0633\u06cc\u0627\u0631 \u0645\u0624\u062b\u0631\u062a\u0631 \u0627\u0632 \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u0627\u0633\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\/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<p>\u0645\u062a\u063a\u06cc\u0631\u0647\u0627 \u067e\u0627\u06cc\u0647 \u0648 \u0627\u0633\u0627\u0633 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u062f\u0631 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0647\u0633\u062a\u0646\u062f. \u0622\u0646\u0647\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc \u062f\u0647\u0646\u062f \u0645\u0642\u0627\u062f\u06cc\u0631 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0648 \u0645\u062f\u06cc\u0631\u06cc\u062a \u06a9\u0646\u06cc\u062f\u060c \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u0646\u062c\u0627\u0645 \u0647\u0631 \u06af\u0648\u0646\u0647 \u0645\u062d\u0627\u0633\u0628\u0647 \u06cc\u0627 \u0639\u0645\u0644\u06cc\u0627\u062a\u06cc \u0636\u0631\u0648\u0631\u06cc \u0627\u0633\u062a. \u0647\u0645\u0686\u0646\u06cc\u0646 \u0627\u06af\u0631 \u062f\u0648\u0633\u062a \u062f\u0627\u0631\u06cc\u062f \u06a9\u0647 \u062c\u0627\u0648\u0627 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u06a9\u0627\u0645\u0644 \u0627\u0632 \u0635\u0641\u0631 \u062a\u0627 \u0635\u062f \u06cc\u0627\u062f \u0628\u06af\u06cc\u0631\u06cc\u062f \u067e\u06cc\u0634\u0646\u0647\u0627\u062f \u0645\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062f\u0648\u0631\u0647\u200c\u0647\u0627\u06cc&nbsp;<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>&nbsp;\u0648&nbsp;<a href=\"https:\/\/maktabkhooneh.org\/learn\/programming\">\u0622\u0645\u0648\u0632\u0634 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc<\/a>&nbsp;\u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u062f\u0648\u0631\u0647\u200c\u0647\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u0635\u0641\u0631 \u062a\u0627 \u0635\u062f \u0647\u0631 \u0632\u0628\u0627\u0646 \u0628\u0631\u0646\u0627\u0645\u0647 \u0646\u0648\u06cc\u0633\u06cc \u0631\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0622\u0645\u0648\u0632\u0634 \u062e\u0648\u0627\u0647\u0646\u062f \u062f\u0627\u062f \u0648 \u062f\u0631 \u067e\u0627\u06cc\u0627\u0646 \u0628\u0647 \u0634\u0645\u0627 \u06af\u0648\u0627\u0647\u06cc\u0646\u0627\u0645\u0647 \u0622\u0646 \u062a\u062e\u0635\u0635 \u062f\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/p>\n\n\n\n<p>\u0645\u0646\u0627\u0628\u0639:<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.w3schools.com\/js\/js_variables.asp\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.javatpoint.com\/javascript-global-variable\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u062f\u0631 \u0627\u06cc\u0646 \u067e\u0633\u062a \u0622\u0645\u0648\u0632\u0634\u06cc \u0627\u0632 \u0645\u06a9\u062a\u0628 \u062e\u0648\u0646\u0647 \u0642\u0631\u0627\u0631 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[&hellip;]<\/p>\n","protected":false},"author":28,"featured_media":39519,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,12],"tags":[],"class_list":["post-29657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming-and-it-training","category-java-script-articles"],"_links":{"self":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/29657","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=29657"}],"version-history":[{"count":3,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/29657\/revisions"}],"predecessor-version":[{"id":66188,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/posts\/29657\/revisions\/66188"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/media\/39519"}],"wp:attachment":[{"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/media?parent=29657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/categories?post=29657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maktabkhooneh.org\/mag\/wp-json\/wp\/v2\/tags?post=29657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}