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- # screenfull.js
- > Simple wrapper for cross-browser usage of the JavaScript [Fullscreen API](https://developer.mozilla.org/en/DOM/Using_full-screen_mode), which lets you bring the page or any element into fullscreen. Smoothens out the browser implementation differences, so you don't have to.
- **This package is feature complete. No new features will be accepted.**
- #### [Demo](https://sindresorhus.com/screenfull.js)
- <br>
- ---
- <div align="center">
- <p>
- <p>
- <sup>
- <a href="https://github.com/sponsors/sindresorhus">My open source work is supported by the community</a>
- </sup>
- </p>
- <sup>Special thanks to:</sup>
- <br>
- <br>
- <a href="https://github.com/botpress/botpress">
- <img src="https://sindresorhus.com/assets/thanks/botpress-logo.svg" width="260" alt="Botpress">
- </a>
- <br>
- <sub><b>Botpress is an open-source conversational assistant creation platform.</b></sub>
- <br>
- <sub>They <a href="https://github.com/botpress/botpress/blob/master/.github/CONTRIBUTING.md">welcome contributions</a> from anyone, whether you're into machine learning,<br>want to get started in open-source, or just have an improvement idea.</sub>
- <br>
- </p>
- </div>
- ---
- <br>
- ## Install
- Only 0.7 kB gzipped.
- Download the [production version][min] or the [development version][max].
- [min]: https://github.com/sindresorhus/screenfull.js/raw/master/dist/screenfull.min.js
- [max]: https://github.com/sindresorhus/screenfull.js/raw/master/dist/screenfull.js
- ```
- $ npm install screenfull
- ```
- Also available on [cdnjs](https://cdnjs.com/libraries/screenfull.js).
- ## Why?
- ### Screenfull
- ```js
- if (screenfull.isEnabled) {
- screenfull.request();
- }
- ```
- ### Vanilla JavaScript
- ```js
- document.fullscreenEnabled =
- document.fullscreenEnabled ||
- document.mozFullScreenEnabled ||
- document.documentElement.webkitRequestFullScreen;
- function requestFullscreen(element) {
- if (element.requestFullscreen) {
- element.requestFullscreen();
- } else if (element.mozRequestFullScreen) {
- element.mozRequestFullScreen();
- } else if (element.webkitRequestFullScreen) {
- element.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
- }
- }
- if (document.fullscreenEnabled) {
- requestFullscreen(document.documentElement);
- }
- // This is not even entirely comprehensive. There's more.
- ```
- ## Support
- [Supported browsers](http://caniuse.com/fullscreen)
- **Note:** In order to use this package in Internet Explorer, you need a [`Promise` polyfill](https://github.com/stefanpenner/es6-promise).
- **Note:** Safari is supported on desktop and iPad, but not on iPhone. This is a limitation in the browser, not in Screenfull.
- ## Documentation
- ### Examples
- #### Fullscreen the page
- ```js
- document.getElementById('button').addEventListener('click', () => {
- if (screenfull.isEnabled) {
- screenfull.request();
- } else {
- // Ignore or do something else
- }
- });
- ```
- #### Fullscreen an element
- ```js
- const element = document.getElementById('target');
- document.getElementById('button').addEventListener('click', () => {
- if (screenfull.isEnabled) {
- screenfull.request(element);
- }
- });
- ```
- #### Fullscreen an element with jQuery
- ```js
- const element = $('#target')[0]; // Get DOM element from jQuery collection
- $('#button').on('click', () => {
- if (screenfull.isEnabled) {
- screenfull.request(element);
- }
- });
- ```
- #### Toggle fullscreen on a image with jQuery
- ```js
- $('img').on('click', event => {
- if (screenfull.isEnabled) {
- screenfull.toggle(event.target);
- }
- });
- ```
- #### Detect fullscreen change
- ```js
- if (screenfull.isEnabled) {
- screenfull.on('change', () => {
- console.log('Am I fullscreen?', screenfull.isFullscreen ? 'Yes' : 'No');
- });
- }
- ```
- Remove listeners with:
- ```js
- screenfull.off('change', callback);
- ```
- #### Detect fullscreen error
- ```js
- if (screenfull.isEnabled) {
- screenfull.on('error', event => {
- console.error('Failed to enable fullscreen', event);
- });
- }
- ```
- See the [demo](https://sindresorhus.com/screenfull.js) for more examples, and view the source.
- #### Fullscreen an element with Angular.js
- You can use the [Angular.js binding](https://github.com/hrajchert/angular-screenfull) to do something like:
- ```html
- <div ngsf-fullscreen>
- <p>This is a fullscreen element</p>
- <button ngsf-toggle-fullscreen>Toggle fullscreen</button>
- </div>
- ```
- #### Fullscreen the page with Angular 2
- ```ts
- import {Directive, HostListener} from '@angular/core';
- import screenfull = require('screenfull');
- @Directive({
- selector: '[toggleFullscreen]'
- })
- export class ToggleFullscreenDirective {
- @HostListener('click') onClick() {
- if (screenfull.isEnabled) {
- screenfull.toggle();
- }
- }
- }
- ```
- ```html
- <button toggleFullscreen>Toggle fullscreen<button>
- ```
- ### API
- #### .request()
- Make an element fullscreen.
- Accepts a DOM element. Default is `<html>`. If called with another element than the currently active, it will switch to that if it's a decendant.
- If your page is inside an `<iframe>` you will need to add a `allowfullscreen` attribute (+ `webkitallowfullscreen` and `mozallowfullscreen`).
- Keep in mind that the browser will only enter fullscreen when initiated by user events like click, touch, key.
- Returns a promise that resolves after the element enters fullscreen.
- #### .exit()
- Brings you out of fullscreen.
- Returns a promise that resolves after the element exits fullscreen.
- #### .toggle()
- Requests fullscreen if not active, otherwise exits.
- Returns a promise that resolves after the element enters/exits fullscreen.
- #### .on(event, function)
- Events: `'change' | 'error'`
- Add a listener for when the browser switches in and out of fullscreen or when there is an error.
- #### .off(event, function)
- Remove a previously registered event listener.
- #### .onchange(function)
- Alias for `.on('change', function)`
- #### .onerror(function)
- Alias for `.on('error', function)`
- #### .isFullscreen
- Returns a boolean whether fullscreen is active.
- #### .element
- Returns the element currently in fullscreen, otherwise `null`.
- #### .isEnabled
- Returns a boolean whether you are allowed to enter fullscreen. If your page is inside an `<iframe>` you will need to add a `allowfullscreen` attribute (+ `webkitallowfullscreen` and `mozallowfullscreen`).
- #### .raw
- Exposes the raw properties (prefixed if needed) used internally: `requestFullscreen`, `exitFullscreen`, `fullscreenElement`, `fullscreenEnabled`, `fullscreenchange`, `fullscreenerror`
- ## FAQ
- ### How can I navigate to a new page when fullscreen?
- That's not supported by browsers for security reasons. There is, however, a dirty workaround. Create a seamless iframe that fills the screen and navigate to the page in that instead.
- ```js
- $('#new-page-btn').click(() => {
- const iframe = document.createElement('iframe')
- iframe.setAttribute('id', 'external-iframe');
- iframe.setAttribute('src', 'http://new-page-website.com');
- iframe.setAttribute('frameborder', 'no');
- iframe.style.position = 'absolute';
- iframe.style.top = '0';
- iframe.style.right = '0';
- iframe.style.bottom = '0';
- iframe.style.left = '0';
- iframe.style.width = '100%';
- iframe.style.height = '100%';
- $(document.body).prepend(iframe);
- document.body.style.overflow = 'hidden';
- });
- ```
- ## Resources
- - [Using the Fullscreen API in web browsers](http://hacks.mozilla.org/2012/01/using-the-fullscreen-api-in-web-browsers/)
- - [MDN - Fullscreen API](https://developer.mozilla.org/en/DOM/Using_full-screen_mode)
- - [W3C Fullscreen spec](http://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html)
- - [Building an amazing fullscreen mobile experience](http://www.html5rocks.com/en/mobile/fullscreen/)
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