{"id":143973,"date":"2025-01-09T15:10:32","date_gmt":"2025-01-09T09:40:32","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=143973"},"modified":"2025-01-09T15:10:32","modified_gmt":"2025-01-09T09:40:32","slug":"data-types-in-javascript","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/","title":{"rendered":"Data Types in JavaScript"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/\/  console.log(typeof(a))  \/\/ undefined\r\n\/\/   b=10   \/\/ number\r\n\/\/   console.log(typeof(b))\r\n\/\/   c=10.56  \/\/number\r\n\/\/   console.log(typeof(c))\r\n\/\/   d=\"Hello Friends\"  \/\/string\r\n\/\/   console.log(typeof(d))\r\n\/\/   e='Hello Friends' \/\/string\r\n\/\/   console.log(typeof(e))\r\n\/\/   f=true  \r\n\/\/   console.log(typeof(f))\r\n    \r\n  \/\/  let ar=[1,2,3,4,5,6,7,8,9]  \/\/ array is an object\r\n  \/\/ console.log(typeof(ar))\r\n\r\n    \/\/  let st1={srno:101,sname:'Vivek',sper:98.55}\r\n    \/\/  console.log(typeof(st1))\r\n    console.log(\"20\"+10)\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 \/\/ console.log(typeof(a)) \/\/ undefined \/\/ b=10 \/\/ number \/\/ console.log(typeof(b)) \/\/ c=10.56 \/\/number \/\/ console.log(typeof(c)) \/\/ d=&#8221;Hello Friends&#8221; \/\/string \/\/ console.log(typeof(d)) \/\/ e=&#8217;Hello Friends&#8217; \/\/string \/\/ console.log(typeof(e)) \/\/ f=true \/\/ console.log(typeof(f)) \/\/&#46;&#46;&#46;<\/p>\n","protected":false},"author":581,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18979],"tags":[28284,32083,7758,18983,31621,31622,33506],"class_list":["post-143973","post","type-post","status-publish","format-standard","hentry","category-javascript","tag-data-types","tag-data-types-in-javascript","tag-javascript","tag-javascript-data-types","tag-javascript-practical","tag-javascript-program","tag-javascript-program-on-data-types"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Data Types in JavaScript - DataFlair<\/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:\/\/data-flair.training\/blogs\/data-types-in-javascript\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Data Types in JavaScript - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 \/\/ console.log(typeof(a)) \/\/ undefined \/\/ b=10 \/\/ number \/\/ console.log(typeof(b)) \/\/ c=10.56 \/\/number \/\/ console.log(typeof(c)) \/\/ d=&quot;Hello Friends&quot; \/\/string \/\/ console.log(typeof(d)) \/\/ e=&#039;Hello Friends&#039; \/\/string \/\/ console.log(typeof(e)) \/\/ f=true \/\/ console.log(typeof(f)) \/\/&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-09T09:40:32+00:00\" \/>\n<meta name=\"author\" content=\"DataFlair Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"DataFlair Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Data Types in JavaScript - DataFlair","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:\/\/data-flair.training\/blogs\/data-types-in-javascript\/","og_locale":"en_US","og_type":"article","og_title":"Data Types in JavaScript - DataFlair","og_description":"Program 1 \/\/ console.log(typeof(a)) \/\/ undefined \/\/ b=10 \/\/ number \/\/ console.log(typeof(b)) \/\/ c=10.56 \/\/number \/\/ console.log(typeof(c)) \/\/ d=\"Hello Friends\" \/\/string \/\/ console.log(typeof(d)) \/\/ e='Hello Friends' \/\/string \/\/ console.log(typeof(e)) \/\/ f=true \/\/ console.log(typeof(f)) \/\/&#46;&#46;&#46;","og_url":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/","og_site_name":"DataFlair","article_publisher":"https:\/\/www.facebook.com\/DataFlairWS\/","article_published_time":"2025-01-09T09:40:32+00:00","author":"DataFlair Team","twitter_card":"summary_large_image","twitter_creator":"@DataFlairWS","twitter_site":"@DataFlairWS","twitter_misc":{"Written by":"DataFlair Team","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/#article","isPartOf":{"@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/"},"author":{"name":"DataFlair Team","@id":"https:\/\/data-flair.training\/blogs\/#\/schema\/person\/c187795dc82ab948373cca526df7c445"},"headline":"Data Types in JavaScript","datePublished":"2025-01-09T09:40:32+00:00","mainEntityOfPage":{"@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/"},"wordCount":6,"commentCount":0,"publisher":{"@id":"https:\/\/data-flair.training\/blogs\/#organization"},"keywords":["data types","data types in javascript","JavaScript","JavaScript Data Types","javascript practical","javascript program","javascript program on data types"],"articleSection":["JavaScript Tutorial"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/","url":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/","name":"Data Types in JavaScript - DataFlair","isPartOf":{"@id":"https:\/\/data-flair.training\/blogs\/#website"},"datePublished":"2025-01-09T09:40:32+00:00","breadcrumb":{"@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/data-flair.training\/blogs\/data-types-in-javascript\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Blog Home","item":"https:\/\/data-flair.training\/blogs\/"},{"@type":"ListItem","position":2,"name":"JavaScript Tutorial","item":"https:\/\/data-flair.training\/blogs\/category\/javascript\/"},{"@type":"ListItem","position":3,"name":"Data Types in JavaScript"}]},{"@type":"WebSite","@id":"https:\/\/data-flair.training\/blogs\/#website","url":"https:\/\/data-flair.training\/blogs\/","name":"DataFlair","description":"Learn Today. Lead Tomorrow.","publisher":{"@id":"https:\/\/data-flair.training\/blogs\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/data-flair.training\/blogs\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/data-flair.training\/blogs\/#organization","name":"DataFlair","url":"https:\/\/data-flair.training\/blogs\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/data-flair.training\/blogs\/#\/schema\/logo\/image\/","url":"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2016\/07\/Data-Flair.png","contentUrl":"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2016\/07\/Data-Flair.png","width":106,"height":48,"caption":"DataFlair"},"image":{"@id":"https:\/\/data-flair.training\/blogs\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/DataFlairWS\/","https:\/\/x.com\/DataFlairWS","https:\/\/www.linkedin.com\/company\/dataflair-web-services-pvt-ltd\/","https:\/\/www.youtube.com\/user\/DataFlairWS"]},{"@type":"Person","@id":"https:\/\/data-flair.training\/blogs\/#\/schema\/person\/c187795dc82ab948373cca526df7c445","name":"DataFlair Team","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/2302ebc438084d2f1f993edc1996a0aae01332e81f3227cba8df0c48ec010ca4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/2302ebc438084d2f1f993edc1996a0aae01332e81f3227cba8df0c48ec010ca4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/2302ebc438084d2f1f993edc1996a0aae01332e81f3227cba8df0c48ec010ca4?s=96&d=mm&r=g","caption":"DataFlair Team"},"description":"DataFlair Team provides high-impact content on programming, Java, Python, C++, DSA, AI, ML, data Science, Android, Flutter, MERN, Web Development, and technology. We make complex concepts easy to grasp, helping learners of all levels succeed in their tech careers.","url":"https:\/\/data-flair.training\/blogs\/author\/dfteam6\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/posts\/143973","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/users\/581"}],"replies":[{"embeddable":true,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/comments?post=143973"}],"version-history":[{"count":1,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/posts\/143973\/revisions"}],"predecessor-version":[{"id":143974,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/posts\/143973\/revisions\/143974"}],"wp:attachment":[{"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/media?parent=143973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/categories?post=143973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/data-flair.training\/blogs\/wp-json\/wp\/v2\/tags?post=143973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}