---
layout: page
title: Express basic routing
description: Learn the fundamentals of routing in Express.js applications, including how to define routes, handle HTTP methods, and create route handlers for your web server.
menu: starter
redirect_from: "/starter/basic-routing.html"
---

# Basic routing

_Routing_ refers to determining how an application responds to a client request to a particular endpoint, which is a URI (or path) and a specific HTTP request method (GET, POST, and so on).

Each route can have one or more handler functions, which are executed when the route is matched.

Route definition takes the following structure:

```js
app.METHOD(PATH, HANDLER)
```

Where:

- `app` is an instance of `express`.
- `METHOD` is an [HTTP request method](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods), in lowercase.
- `PATH` is a path on the server.
- `HANDLER` is the function executed when the route is matched.

<div class="doc-box doc-notice" markdown="1">
This tutorial assumes that an instance of `express` named `app` is created and the server is running. If you are not familiar with creating an app and starting it, see the [Hello world example](/{{ page.lang }}/starter/hello-world.html).
</div>

The following examples illustrate defining simple routes.

Respond with `Hello World!` on the homepage:

```js
app.get('/', (req, res) => {
  res.send('Hello World!')
})
```

Respond to POST request on the root route (`/`), the application's home page:

```js
app.post('/', (req, res) => {
  res.send('Got a POST request')
})
```

Respond to a PUT request to the `/user` route:

```js
app.put('/user', (req, res) => {
  res.send('Got a PUT request at /user')
})
```

Respond to a DELETE request to the `/user` route:

```js
app.delete('/user', (req, res) => {
  res.send('Got a DELETE request at /user')
})
```

For more details about routing, see the [routing guide](/{{ page.lang }}/guide/routing.html).

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