List of JavaScript engines

<p>The first <a href="/facts/Software_engine/QhIAMMBg">engines</a> for <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a> were mere <a href="/facts/Interpreter_(computing)/JB85fbyb">interpreters</a> of the <a href="/facts/Source_code/o9J6Jv23">source code</a>, but all relevant modern engines use <a href="/facts/Just-in-time_compilation/rEYDsd8l">just-in-time compilation</a> for improved performance. JavaScript engines are typically developed by <a href="/facts/Web_browser/2pfyymLs">web browser</a> vendors, and every major browser has one. In a browser, the JavaScript engine runs in concert with the <a href="/facts/Browser_engine/wLna3ate">rendering engine</a> via the <a href="/facts/Document_Object_Model/GglE6jGx">Document Object Model</a> and <a href="/facts/Web_IDL/1EYYbP3F">Web IDL</a> bindings. However, the use of JavaScript engines is not limited to browsers; for example, the <a href="/facts/V8_(JavaScript_engine)/0Fd3taMh">V8 engine</a> is a core component of the <a href="/facts/Node.js/FKzhV4Qa">Node.js</a> <a href="/facts/Runtime_system/YmCuC4xP">runtime system</a>. They are also called <a href="/facts/ECMAScript/M7nDHsB5">ECMAScript</a> engines, after the official name of the specification. With the advent of <a href="/facts/WebAssembly/7ukwnxY9">WebAssembly</a>, some engines can also execute this code in the same <a href="/facts/Sandbox_(computer_security)/WEm2u7oG">sandbox</a> as regular JavaScript code.
</p>

List of JavaScript engines open-in-new

List of JavaScript engines