Express.js

<p>Express.js, or simply Express, is a <a href="/facts/Front_end_and_back_end/QVUfH8gu">back end</a> <a href="/facts/Web_application_framework/8f1CVHDX">web application framework</a> for building <a href="/facts/Representational_state_transfer/Q58zfr5h">REST</a>ful APIs with <a href="/facts/Node.js/FKzhV4Qa">Node.js</a>, released as <a href="/facts/Free_and_open-source_software/1cHtjLCB">free and open-source software</a> under the <a href="/facts/MIT_License/8llAQtlk">MIT License</a>. It is designed for building <a href="/facts/Web_application/BLkF3BIN">web applications</a> and <a href="/facts/API/GMlN4vUr">APIs</a>. It has been called the <a href="/facts/De_facto_standard/TRELHVwI">de facto standard</a> server framework for <a href="/facts/Node.js/FKzhV4Qa">Node.js</a>.
</p><p>The original author, TJ Holowaychuk, described it as a <a href="/facts/Sinatra_(software)/NSe8r5rN">Sinatra</a>-inspired server, meaning that it is relatively minimal with many features available as plugins. Express is the back-end component of popular development stacks like the <a href="/facts/MEAN_(solution_stack)/DoWpCGbc">MEAN</a>, MERN or MEVN stack, together with the <a href="/facts/MongoDB/9myQKGoY">MongoDB</a> database software and a <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a> front-end framework or library.
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Express.js open-in-new

Express.js