{"id":364,"date":"2023-03-05T21:48:49","date_gmt":"2023-03-05T21:48:49","guid":{"rendered":"https:\/\/adsreg.com\/english\/?p=364"},"modified":"2023-03-06T10:06:00","modified_gmt":"2023-03-06T10:06:00","slug":"variables","status":"publish","type":"post","link":"https:\/\/adsreg.com\/english\/variables\/","title":{"rendered":"Variables"},"content":{"rendered":"<p>4 Ways to Declare a JavaScript Variable:<\/p>\n<ul>\n<li>Using\u00a0var<\/li>\n<li>Using\u00a0let<\/li>\n<li>Using\u00a0const<\/li>\n<li>Using nothing<\/li>\n<\/ul>\n<h2 class=\"AdsRegTOCPoint\" id=\"WhatAreVariables\">What are Variables?<\/h2>\n<p>Variables are containers for storing data. Like text \/ Numbers \/ Dates \/ Colors and more&#8230;<\/p>\n<div class=\"MakeIFrameAndTryItBtn\">JavaScript\/004-Variables<\/div>\n<p>&nbsp;<\/p>\n<h1>JavaScript let\/var<\/h1>\n<p>&nbsp;<\/p>\n<p>Sample:<\/p>\n<pre>let x = \"Bill Gates\";\r\nlet x = 2000;\r\n\/\/ SyntaxError: 'x' has already been declared<\/pre>\n<pre>var x = \"Bill Gates\";\r\nvar x = 2000;\r\n\/\/ No Error<\/pre>\n<pre>{\r\nlet x = 777;\r\n}\r\n\/\/ x can NOT be used here\r\n<\/pre>\n<pre>{\r\nvar x = 2;\r\n}\r\n\/\/ x CAN be used here<\/pre>\n<pre>var x = 10;\r\n\/\/ Here x is 10\r\n\r\n{\r\nvar x = 2;\r\n\/\/ Here x is 2\r\n}\r\n\r\n\/\/ Here x is 2<\/pre>\n<p>&nbsp;<\/p>\n<h1 class=\"AdsRegTOCPoint\" id=\"Sample2Var\">Sample2: Use Variables with (var)<\/h1>\n<div class=\"MakeIFrameAndTryItBtn\">JavaScript\/004-Variables\/001-var<\/div>\n<h1 class=\"AdsRegTOCPoint\" id=\"Sample3Let\">Sample3: Use Variables with (let)<\/h1>\n<div class=\"MakeIFrameAndTryItBtn\">JavaScript\/004-Variables\/002-let<\/div>\n","protected":false},"excerpt":{"rendered":"<p>4 Ways to Declare a JavaScript Variable: Using\u00a0var Using\u00a0let Using\u00a0const Using nothing What are Variables? Variables are containers for storing data. Like text \/ Numbers \/ Dates \/ Colors and more&#8230; JavaScript\/004-Variables &nbsp; JavaScript let\/var &nbsp; Sample: let x = &#8220;Bill Gates&#8221;; let x = 2000; \/\/ SyntaxError: &#8216;x&#8217; has already been declared var x &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/adsreg.com\/english\/variables\/\"> <span class=\"screen-reader-text\">Variables<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[10],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.1 (Yoast SEO v21.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Variables - AdsReg Magazine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/adsreg.com\/english\/variables\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Variables\" \/>\n<meta property=\"og:description\" content=\"4 Ways to Declare a JavaScript Variable: Using\u00a0var Using\u00a0let Using\u00a0const Using nothing What are Variables? Variables are containers for storing data. Like text \/ Numbers \/ Dates \/ Colors and more&#8230; JavaScript\/004-Variables &nbsp; JavaScript let\/var &nbsp; Sample: let x = &quot;Bill Gates&quot;; let x = 2000; \/\/ SyntaxError: &#039;x&#039; has already been declared var x &hellip; Variables Read More &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/adsreg.com\/english\/variables\/\" \/>\n<meta property=\"og:site_name\" content=\"AdsReg Magazine\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-05T21:48:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-03-06T10:06:00+00:00\" \/>\n<meta name=\"author\" content=\"System Administrator\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"System Administrator\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/adsreg.com\/english\/variables\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/adsreg.com\/english\/variables\/\"},\"author\":{\"name\":\"System Administrator\",\"@id\":\"https:\/\/adsreg.com\/english\/#\/schema\/person\/48c8cbebb50253580687990b57461cab\"},\"headline\":\"Variables\",\"datePublished\":\"2023-03-05T21:48:49+00:00\",\"dateModified\":\"2023-03-06T10:06:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/adsreg.com\/english\/variables\/\"},\"wordCount\":56,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/adsreg.com\/english\/#organization\"},\"articleSection\":[\"Javascript\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/adsreg.com\/english\/variables\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/adsreg.com\/english\/variables\/\",\"url\":\"https:\/\/adsreg.com\/english\/variables\/\",\"name\":\"Variables - AdsReg Magazine\",\"isPartOf\":{\"@id\":\"https:\/\/adsreg.com\/english\/#website\"},\"datePublished\":\"2023-03-05T21:48:49+00:00\",\"dateModified\":\"2023-03-06T10:06:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/adsreg.com\/english\/variables\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/adsreg.com\/english\/variables\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/adsreg.com\/english\/variables\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/adsreg.com\/english\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Variables\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/adsreg.com\/english\/#website\",\"url\":\"https:\/\/adsreg.com\/english\/\",\"name\":\"AdsReg Magazine\",\"description\":\"AdsReg.com Magazine\",\"publisher\":{\"@id\":\"https:\/\/adsreg.com\/english\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/adsreg.com\/english\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/adsreg.com\/english\/#organization\",\"name\":\"AdsReg\",\"url\":\"https:\/\/adsreg.com\/english\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/adsreg.com\/english\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/adsreg.com\/english\/wp-content\/uploads\/sites\/3\/2023\/02\/TopSiteLogo_AdsReg9-scaled.webp\",\"contentUrl\":\"https:\/\/adsreg.com\/english\/wp-content\/uploads\/sites\/3\/2023\/02\/TopSiteLogo_AdsReg9-scaled.webp\",\"width\":2560,\"height\":537,\"caption\":\"AdsReg\"},\"image\":{\"@id\":\"https:\/\/adsreg.com\/english\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/adsreg.com\/english\/#\/schema\/person\/48c8cbebb50253580687990b57461cab\",\"name\":\"System Administrator\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/adsreg.com\/english\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/34855956a4cc2bdf51b8b1bb79fdda69?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/34855956a4cc2bdf51b8b1bb79fdda69?s=96&d=mm&r=g\",\"caption\":\"System Administrator\"},\"sameAs\":[\"https:\/\/adsreg.com\"],\"url\":\"https:\/\/adsreg.com\/english\/author\/skyman\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Variables - AdsReg Magazine","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/adsreg.com\/english\/variables\/","og_locale":"en_US","og_type":"article","og_title":"Variables","og_description":"4 Ways to Declare a JavaScript Variable: Using\u00a0var Using\u00a0let Using\u00a0const Using nothing What are Variables? Variables are containers for storing data. Like text \/ Numbers \/ Dates \/ Colors and more&#8230; JavaScript\/004-Variables &nbsp; JavaScript let\/var &nbsp; Sample: let x = \"Bill Gates\"; let x = 2000; \/\/ SyntaxError: 'x' has already been declared var x &hellip; Variables Read More &raquo;","og_url":"https:\/\/adsreg.com\/english\/variables\/","og_site_name":"AdsReg Magazine","article_published_time":"2023-03-05T21:48:49+00:00","article_modified_time":"2023-03-06T10:06:00+00:00","author":"System Administrator","twitter_card":"summary_large_image","twitter_misc":{"Written by":"System Administrator","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/adsreg.com\/english\/variables\/#article","isPartOf":{"@id":"https:\/\/adsreg.com\/english\/variables\/"},"author":{"name":"System Administrator","@id":"https:\/\/adsreg.com\/english\/#\/schema\/person\/48c8cbebb50253580687990b57461cab"},"headline":"Variables","datePublished":"2023-03-05T21:48:49+00:00","dateModified":"2023-03-06T10:06:00+00:00","mainEntityOfPage":{"@id":"https:\/\/adsreg.com\/english\/variables\/"},"wordCount":56,"commentCount":0,"publisher":{"@id":"https:\/\/adsreg.com\/english\/#organization"},"articleSection":["Javascript"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/adsreg.com\/english\/variables\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/adsreg.com\/english\/variables\/","url":"https:\/\/adsreg.com\/english\/variables\/","name":"Variables - AdsReg Magazine","isPartOf":{"@id":"https:\/\/adsreg.com\/english\/#website"},"datePublished":"2023-03-05T21:48:49+00:00","dateModified":"2023-03-06T10:06:00+00:00","breadcrumb":{"@id":"https:\/\/adsreg.com\/english\/variables\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/adsreg.com\/english\/variables\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/adsreg.com\/english\/variables\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/adsreg.com\/english\/"},{"@type":"ListItem","position":2,"name":"Variables"}]},{"@type":"WebSite","@id":"https:\/\/adsreg.com\/english\/#website","url":"https:\/\/adsreg.com\/english\/","name":"AdsReg Magazine","description":"AdsReg.com Magazine","publisher":{"@id":"https:\/\/adsreg.com\/english\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/adsreg.com\/english\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/adsreg.com\/english\/#organization","name":"AdsReg","url":"https:\/\/adsreg.com\/english\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/adsreg.com\/english\/#\/schema\/logo\/image\/","url":"https:\/\/adsreg.com\/english\/wp-content\/uploads\/sites\/3\/2023\/02\/TopSiteLogo_AdsReg9-scaled.webp","contentUrl":"https:\/\/adsreg.com\/english\/wp-content\/uploads\/sites\/3\/2023\/02\/TopSiteLogo_AdsReg9-scaled.webp","width":2560,"height":537,"caption":"AdsReg"},"image":{"@id":"https:\/\/adsreg.com\/english\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/adsreg.com\/english\/#\/schema\/person\/48c8cbebb50253580687990b57461cab","name":"System Administrator","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/adsreg.com\/english\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/34855956a4cc2bdf51b8b1bb79fdda69?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/34855956a4cc2bdf51b8b1bb79fdda69?s=96&d=mm&r=g","caption":"System Administrator"},"sameAs":["https:\/\/adsreg.com"],"url":"https:\/\/adsreg.com\/english\/author\/skyman\/"}]}},"_links":{"self":[{"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/posts\/364"}],"collection":[{"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/comments?post=364"}],"version-history":[{"count":6,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/posts\/364\/revisions"}],"predecessor-version":[{"id":370,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/posts\/364\/revisions\/370"}],"wp:attachment":[{"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/media?parent=364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/categories?post=364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adsreg.com\/english\/wp-json\/wp\/v2\/tags?post=364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}