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30-seconds-of-code/snippets/fullscreen.md
2022-05-03 18:34:25 +03:00

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---
title: Toggle fullscreen mode
tags: browser
expertise: intermediate
cover: blog_images/antelope.jpg
firstSeen: 2020-10-04T16:48:00+03:00
lastUpdated: 2020-10-19T22:49:51+03:00
---
Opens or closes an element in fullscreen mode.
- Use `Document.querySelector()` and `Element.requestFullscreen()` to open the given element in fullscreen.
- Use `Document.exitFullscreen()` to exit fullscreen mode.
- Omit the second argument, `el`, to use `body` as the default element.
- Omit the first element, `mode`, to open the element in fullscreen mode by default.
```js
const fullscreen = (mode = true, el = 'body') =>
mode
? document.querySelector(el).requestFullscreen()
: document.exitFullscreen();
```
```js
fullscreen(); // Opens `body` in fullscreen mode
fullscreen(false); // Exits fullscreen mode
```