Revision 913477 of JavaScript

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<p class="summary"><strong>JavaScript</strong><sup>®</sup> (vaak afgekort tot <strong>JS</strong>) is een simpele, niet zwaar belastende, object-georiënteerde ( met <a href="https://en.wikipedia.org/wiki/First-class_functions" title="https://en.wikipedia.org/wiki/First-class_functions">first-class functies</a>) en platformonafhankelijke taal, bekend als een taal voor webpagina's, maar gebruikt in veel <a href="https://en.wikipedia.org/wiki/JavaScript#Uses_outside_web_pages">niet-browser omgevingen</a> zoals&nbsp;<a class="external" href="https://nodejs.org/">node.js</a> of <a href="https://couchdb.apache.org/">Apache CouchDB</a>. Het is een <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Prototype-based_programming" title="Prototype-based">prototype-gebaseerde</a>, multi-paradigma programmeertaal die dynamisch is en object-georiënteerde support bied, imperatief en functionele programmeerstijlen. Lees meer <a href="/en-US/docs/Web/JavaScript/About_JavaScript">over JavaScript</a>.</p>

<p>De JavaScript standaard wordt <a href="/en-US/docs/JavaScript/Language_Resources">ECMAScript</a> genoemd. Vanaf 2012 hebben alle moderne browsers volledig ondersteuning voor ECMAScript 5.1. Oudere browsers ondesteunen op zijn minst ECMAScript 3. Op 17 Juni 2015, is de 6e versie van ECMAScript verschenen. Deze versie is officieel ECMAScript 2015 genoemd, maar is bekender onder ECMAScript 6 or ES6. De documentatie die wij presenteren dekt ECMAScript 6 en we zijn al achter de schermen bezig met een vroege versie van ECMAScript 7.</p>

<p>Deze sectie van de site is gewijd aan de JavaScript-taal zelf. De onderdelen zijn niet specifiek naar web-pagina's of andere host-omgevingen. Voor informatie over {{Glossary("API","APIs")}} specifiek naar Web pagina's, zie <a href="/en-US/docs/Web/API">Web APIs</a> en <a href="/en-US/docs/Glossary/DOM">DOM</a>.</p>

<p>JavaScript moet niet verward worden met <a href="https://en.wikipedia.org/wiki/Java_(programming_language)">Java programming language</a>. Java is een&nbsp; handelsmerk geregistreert door Oracle in de Verenigde Staten en andere landen.</p>

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

<p>Learn hoe te programmeren met JavaScript door onze handleidingen en tutorials.</p>

<h3 id="Inleiding">Inleiding</h3>

<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide">JavaScript Handleiding</a></dt>
 <dd>Wanneer je niet bekend bent met JavaScript, zal deze handleidingen je erdoor heen leiden.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/JavaScript_technologies_overview">JavaScript technologieen overzicht</a></dt>
 <dd>Introductie naar de mogelijkheden met JavaScript.</dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript">Introductie naar Object Georienteerde JavaScript</a></dt>
 <dd>Introductie naar de concepten van object georienteerde programmering in JavaScript.</dd>
</dl>

<h3 id="Tussenvorm">Tussenvorm</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>An overview for those who <em>think</em> they know about JavaScript.</dd>
</dl>

<dl>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures">JavaScript data structures</a></dt>
 <dd>Overview of available data structures in JavaScript.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Equality_comparisons_and_sameness">Equality comparisons and sameness</a></dt>
 <dd>JavaScript provides three different value-comparison operations: strict equality using <code>===</code>, loose equality using <code>==</code>, and the {{jsxref("Global_Objects/Object/is", "Object.is()")}} method.</dd>
</dl>

<h3 id="Geavanceerd">Geavanceerd</h3>

<dl>
 <dt><a href="/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain">Inheritance and the prototype chain</a></dt>
 <dd>Explanation of the widely misunderstood and under-estimated prototype-based inheritance.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Strict_mode">Strict mode</a></dt>
 <dd>A restricted variant of JavaScript.</dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays">JavaScript typed arrays</a></dt>
 <dd>JavaScript typed arrays provide a mechanism for accessing raw binary data.</dd>
 <dt><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Memory_Management">Memory Management</a></dt>
 <dd>Memory life cycle and garbage collection in JavaScript.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/EventLoop">Concurrency model and Event Loop</a></dt>
 <dd>JavaScript has a concurrency model based on an "event loop".</dd>
</dl>
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<h2 id="Reference">Reference</h2>

<p>Browse the complete <a href="/en-US/docs/Web/JavaScript/Reference">JavaScript reference</a> documentation.</p>

<dl>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects">Standard objects</a></dt>
 <dd>Get to know standard built-in objects {{jsxref("Array")}}, {{jsxref("Boolean")}}, {{jsxref("Date")}}, {{jsxref("Error")}}, {{jsxref("Function")}}, {{jsxref("JSON")}}, {{jsxref("Math")}}, {{jsxref("Number")}}, {{jsxref("Object")}}, {{jsxref("RegExp")}}, {{jsxref("String")}}, {{jsxref("Map")}}, {{jsxref("Set")}}, {{jsxref("WeakMap")}} , {{jsxref("WeakSet")}}, and others.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Operators">Expressions and operators</a></dt>
 <dd>Learn more about the behavior of JavaScript's operators {{jsxref("Operators/instanceof", "instanceof")}}, {{jsxref("Operators/typeof", "typeof")}}, {{jsxref("Operators/new", "new")}}, {{jsxref("Operators/this", "this")}}, the <a href="/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence">operator precedence</a>, and more.</dd>
 <dt><a href="/en-US/docs/Web/JavaScript/Reference/Statements">Statements and declarations</a></dt>
 <dd>Learn how {{jsxref("Statements/do...while", "do-while")}}, {{jsxref("Statements/for...in", "for-in")}}, {{jsxref("Statements/for...of", "for-of")}}, {{jsxref("Statements/try...catch", "try-catch")}}, {{jsxref("Statements/let", "let")}}, {{jsxref("Statements/var", "var")}}, {{jsxref("Statements/const", "const")}}, {{jsxref("Statements/if...else", "if-else")}}, {{jsxref("Statements/switch", "switch")}}, 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 JavaScript's functions to develop your applications.</dd>
</dl>

<h2 id="Tools_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>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>
 <dt><a href="https://jsfiddle.net/">JSFiddle</a></dt>
 <dd>Edit JavaScript, CSS, HTML and get live results. Use external resources and collaborate with your team online.</dd>
 <dd>&nbsp;</dd>
</dl>
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