---
title: Express
description: h2 id="express">express()
---

<h2 id="express">express()</h2>

Creates an Express application. The `express()` function is a top-level function exported by the _express_ module.

```js
var express = require('express');
var app = express();

app.get('/', function (req, res) {
  res.send('hello world');
});

app.listen(3000);
```
