---
layout: api
version: 5x
title: Express 5.x - API Reference
description: Access the API reference for Express.js detailing all modules, methods, and properties for building web applications with this version.
menu: api
redirect_from: "/api.html"
---
<div id="api-doc" markdown="1">
  <h1>5.x API</h1>
  <a id='express' class='h2'></a>
  {% include api/en/5x/express.md %}
  <a id='app' class='h2'></a>
  {% include api/en/5x/app.md %}
  <a id='req' class='h2'></a>
  {% include api/en/5x/req.md %}
  <a id='res' class='h2'></a>
  {% include api/en/5x/res.md %}
  <a id='router' class='h2'></a>
  {% include api/en/5x/router.md %}
</div>