Revision 732821 of JavaScript

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<p><strong>JavaScript</strong><sup>®</sup> (often shortened to <strong>JS</strong>) is a lightweight, interpreted, object-oriented language with <a href="https://en.wikipedia.org/wiki/First-class_functions" title="https://en.wikipedia.org/wiki/First-class_functions">first-class functions</a>, most known as the scripting language for Web pages, but <a class="external" href="https://en.wikipedia.org/wiki/JavaScript#Uses_outside_web_pages">used in many non-browser environments</a> as well such as <a class="external" href="https://nodejs.org/">node.js</a> or <a href="https://couchdb.apache.org">Apache CouchDB</a>. It is a <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Prototype-based" title="Prototype-based">prototype-based</a>, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles. Read more <a href="/en-US/docs/Web/JavaScript/About_JavaScript">about JavaScript</a>.</p>
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<p>JavaScript का&nbsp;<span class="short_text" id="result_box" lang="hi"><span class="hps alt-edited">स्तर</span> </span> <a href="/en-US/docs/JavaScript/Language_Resources">ECMAScript है</a>. 2012 से, सभी आधुनिक ब्राउज़रों पूरी तरह से ECMAScript&nbsp; 5.1 सपोर्ट करते हैं। पुराने ब्राउज़र कम से कम&nbsp; ECMAScript&nbsp; 3 सपोर्ट करते है | एक 6th प्रमुख संशोधन के कार्यों में है।</p>

<p>साइट के इस भाग में , JavaScript भाषा में ही करने के लिए समर्पित है वेब पृष्ठों, या अन्य मेजबान वातावरण के लिए विशिष्ट नहीं कर रहे हैं । वेब पृष्ठों के लिए विशिष्ट एपीआई के बारे में जानकारी के लिए,&nbsp; <a href="/en-US/docs/Web/API">Web APIs</a> और <a href="/en-US/docs/Glossary/DOM">DOM</a> देखे.</p>

<p><span id="result_box" lang="hi"><span class="hps">जावास्क्रिप्ट और&nbsp;</span> <span class="hps">जावा प्रोग्रामिंग</span> <span class="hps">भाषा के साथ</span> <span class="hps">कंफ्यूज होने की</span> जरूरत <span class="hps">नहीं है।</span> <span class="hps">जावा</span> <span class="hps">एक ट्रेडमार्क या पंजीकृत</span> <span class="hps">ट्रेडमार्क</span></span><span lang="hi"> <span class="hps">अमेरिका</span> <span class="hps">और अन्य देशों में</span> <span class="hps">ऑरेकल</span> <span class="hps">का&nbsp;</span><span class="hps"> है।</span></span></p>

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<h2 id="Creating" name="Creating">Tutorials</h2>

<p>सीखे program with JavaScript.</p>

<h3 id="Introductory">Introductory</h3>

<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide">JavaScript Guide</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">आप जावास्क्रिप्ट</span> <span class="hps">में&nbsp; नए हैं</span><span> तो, इस गाइड</span> <span class="hps">की भाषा के माध्यम</span> <span class="hps">से चलना होगा।</span></span></dd>
 <dt><a href="/en-US/docs/Web/JavaScript/JavaScript_technologies_overview">JavaScript technologies overview</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">आप जावास्क्रिप्ट</span> <span class="hps">के लिए नए हैं</span><span>, इस गाइड</span> <span class="hps">की भाषा के माध्यम</span> <span class="hps">से चलना होगा।</span></span></dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript">Introduction to Object Oriented JavaScript</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">जावास्क्रिप्ट में</span> <span class="hps">वस्तु</span> <span class="hps">उन्मुख प्रोग्रामिंग</span> <span class="hps">की अवधारणाओं</span> <span class="hps">का परिचय</span><span>।</span></span></dd>
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<h3 id="Intermediate">Intermediate</h3>

<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript">A re-introduction to JavaScript</a></dt>
 <dd>&nbsp;overview<em>-- </em>उनके लिये जो पहले से ही&nbsp; JavaScript जानते है |</dd>
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<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures">JavaScript data structures</a></dt>
 <dd><span class="short_text" id="result_box" lang="hi"><span class="hps">JavaScript&nbsp; में</span> <span class="hps">उपलब्ध</span> <span class="hps">Data Structures</span> <span class="hps">का अवलोकन</span></span></dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Equality_comparisons_and_when_to_use_them">Equality comparisons and when to use them</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">JavaScript</span> <span class="hps">तीन अलग अलग</span> <span class="hps">मूल्य</span> <span class="hps">तुलना</span> <span class="hps">आपरेशनों</span> <span class="hps">प्रदान करता है</span></span>: strict equality using <code>===</code> and loose equality using <code>==.</code></dd>
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<h3 id="Advanced">Advanced</h3>

<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Inheritance_and_the_prototype_chain">Inheritance and the prototype chain</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">व्यापक रूप से</span> <span class="hps">गलत समझा</span> <span class="hps">और</span> <span class="hps">कम अनुमान</span> <span class="hps">प्रोटोटाइप</span> <span class="hps">आधारित</span> <span class="hps">विरासत</span> <span class="hps">की व्याख्या</span><span>।</span></span></dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Strict_mode">Strict mode</a></dt>
 <dd><span class="short_text" id="result_box" lang="hi"><span class="hps">JavaScript का एक</span> <span class="hps">प्रतिबंधित</span> <span class="hps">संस्करण।</span></span></dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays">JavaScript typed arrays</a></dt>
 <dd>JavaScript एक arrays टाइप का है और raw binary data एक्सेस करने के लिये मैकेनिज्म प्रदान करता है |</dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Memory_Management">Memory Management</a></dt>
 <dd><span id="result_box" lang="hi"><span class="hps">JavaScript में</span> <span class="hps">मेमोरी</span> <span class="hps">लाइफ साइकिल </span> <span class="hps">और</span> गार्बेज&nbsp;<span class="hps"> संग्रहण</span><span>।</span></span></dd>
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<h2 id="Reference">Reference</h2>

<p>पूरा <a href="/en-US/docs/Web/JavaScript/Reference">JS reference</a> डॉक्यूमेंटेशन ब्राउज करे|</p>

<dl>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects">Standard objects</a></dt>
 <dd>गेट टू know स्टैण्डर्ड built in objects<code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array" title="The JavaScript Array global object is a constructor for arrays, which are high-level, list-like objects."><code>Array</code></a></code>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean" title="The Boolean object is an object wrapper for a boolean value."><code>Boolean</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date" title="Creates a JavaScript&nbsp;Date instance that represents a single moment in time. Date objects are based on a time value that is the number of milliseconds since 1 January, 1970 UTC."><code>Date</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error" title="The Error constructor creates an error object. Instances of Error objects are thrown when runtime errors occur. The Error object can also be used as a base objects for user-defined exceptions. See below for standard built-in error types."><code>Error</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function" title="The Function constructor creates a new Function object. In JavaScript every function is actually a Function object."><code>Function</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON" title="The JSON object contains methods for parsing JavaScript Object Notation (JSON) and converting values to JSON. It can't be called or constructed, and aside from its two method properties it has no interesting functionality of its own."><code>JSON</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math" title="Math is a built-in object that has properties and methods for mathematical constants and functions. Not a function object."><code>Math</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number" title="The Number JavaScript object is a wrapper object allowing you to work with numerical values. A Number object is created using the Number() constructor."><code>Number</code></a>, <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object"><code>Object</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp" title="The RegExp constructor creates a regular expression object for matching text with a pattern."><code>RegExp</code></a>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String" title="The String global object is a constructor for strings, or a sequence of characters."><code>String</code></a>,&nbsp;<a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map" title="The Map object is a simple key/value map. Any value (both objects and primitive values) may be used as either a key or a value."><code>Map</code></a>, <code><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set">Set</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap" title="The WeakMap object is a collection of key/value pairs in which the keys are objects and the values can be arbitrary values."><code>WeakMap</code></a></code>, <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet" title="The WeakSet object lets you store weakly held objects in a collection."><code>WeakSet</code></a>, and others.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Operators">Expressions &amp; operators</a></dt>
 <dd>Learn more about the behavior of JavaScript's operators <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof">instanceof</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof">typeof</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new">new</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this">this</a></code>, and more.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Statements">Statements &amp; declarations</a></dt>
 <dd>Learn how <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/do...while">do-while</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in">for-in</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of">for-of</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/try...catch">try-catch</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let">let</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/var">var</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const">const</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/if...else">if-else</a></code>, <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch">switch</a></code>, and more JavaScript statements and keywords work.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Functions">Functions</a></dt>
 <dd>Learn how to work with JS functions to develop your applications .</dd>
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<h2 id="Tools_.26_resources">Tools &amp; resources</h2>

<p>Helpful tools while writing and debugging your JavaScript code.</p>

<dl>
 <dt><a href="/en-US/docs/Tools">Firefox Developer Tools</a></dt>
 <dd><a href="/en-US/docs/Tools/Scratchpad">Scratchpad</a>, <a href="/en-US/docs/Tools/Web_Console">Web Console</a>, <a href="/en-US/docs/Tools/Profiler">JavaScript Profiler</a>, <a href="/en-US/docs/Tools/Debugger">Debugger</a>, and more.</dd>
 <dt><a class="external" href="https://www.getfirebug.com/">Firebug</a></dt>
 <dd>Edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Shells">JavaScript Shells</a></dt>
 <dd>A JavaScript shell allows you to quickly test snippets of JavaScript code.</dd>
 <dt><a href="https://togetherjs.com/">TogetherJS</a></dt>
 <dd>
 <p class="hero-header-text large">Collaboration made easy.</p>
 </dd>
 <dt><a href="https://stackoverflow.com/questions/tagged/javascript">Stack Overflow</a></dt>
 <dd>Stack Overflow questions tagged with "JavaScript".</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/New_in_JavaScript">JavaScript versions and release notes</a></dt>
 <dd>Browse JavaScript's feature history and implementation status.</dd>
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