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@ -1,316 +0,0 @@
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HotKeys.js is an input capture library with some very special features, it is easy to pick up and use, has a reasonable footprint (~3kb) (gzipped: 1.73kb), and has no dependencies. It should not interfere with any JavaScript libraries or frameworks.
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[![Build Status](https://www.travis-ci.org/jaywcjlove/hotkeys.svg?branch=master)](https://www.travis-ci.org/jaywcjlove/hotkeys) [![Coverage Status](https://coveralls.io/repos/github/jaywcjlove/hotkeys/badge.svg?branch=master)](https://coveralls.io/github/jaywcjlove/hotkeys?branch=master) ![](http://jaywcjlove.github.io/sb/status/no-dependencies.svg) [![](https://img.shields.io/github/issues/jaywcjlove/hotkeys.svg)](https://github.com/jaywcjlove/hotkeys/issues) [![](https://img.shields.io/github/forks/jaywcjlove/hotkeys.svg)](https://github.com/jaywcjlove/hotkeys/network) [![](https://img.shields.io/github/stars/jaywcjlove/hotkeys.svg)](https://github.com/jaywcjlove/hotkeys/stargazers) [![](https://img.shields.io/github/release/jaywcjlove/hotkeys.svg)](https://github.com/jaywcjlove/hotkeys/releases)
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```shell
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╭┈┈╮ ╭┈┈╮ ╭┈┈╮
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┆ ├┈┈..┈┈┈┈┈.┆ └┈╮┆ ├┈┈..┈┈┈┈┈..┈┈.┈┈..┈┈┈┈┈.
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┆ ┆┆ □ ┆┆ ┈┤┆ < ┆ -__┘┆ ┆ ┆┆__ ┈┈┤
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╰┈┈┴┈┈╯╰┈┈┈┈┈╯╰┈┈┈┈╯╰┈┈┴┈┈╯╰┈┈┈┈┈╯╰┈┈┈ ┆╰┈┈┈┈┈╯
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╰┈┈┈┈┈╯
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```
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## Usage
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You will need `Node.js` installed on your system.
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```shell
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$ npm install hotkeys-js --save
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```
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```js
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import hotkeys from 'hotkeys-js';
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hotkeys('f5', function(event, handler){
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// Prevent the default refresh event under WINDOWS system
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event.preventDefault()
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alert('you pressed F5!')
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});
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```
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Or manually download and link **hotkeys.js** in your HTML, It can also be downloaded via [UNPKG](https://unpkg.com/hotkeys-js/dist/):
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```html
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<script src="https://unpkg.com/hotkeys-js/dist/hotkeys.min.js"></script>
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<script type="text/javascript">
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hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler) {
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switch(handler.key){
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case "ctrl+a":alert('you pressed ctrl+a!');break;
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case "ctrl+b":alert('you pressed ctrl+b!');break;
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case "r":alert('you pressed r!');break;
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case "f":alert('you pressed f!');break;
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}
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});
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</script>
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```
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### Used in React
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[react-hotkeys](https://github.com/jaywcjlove/react-hotkeys) is the React component that listen to keydown and keyup keyboard events, defining and dispatching keyboard shortcuts.
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```shell
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$ npm install react-hot-keys --save
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```
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Detailed use method please see its documentation [react-hotkeys](https://github.com/jaywcjlove/react-hotkeys).
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```jsx
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import React, { Component } from 'react';
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import Hotkeys from 'react-hot-keys';
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export default class HotkeysDemo extends Component {
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constructor(props) {
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super(props);
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this.state = {
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output: 'Hello, I am a component that listens to keydown and keyup of a',
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}
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}
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onKeyUp(keyNm, e, handle) {
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this.setState({output: keyNm})
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}
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onKeyDown(keyNm, e, handle) {
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this.setState({output: keyNm})
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}
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render() {
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return (
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<Hotkeys keyName="shift+a,alt+s" onKeyDown={this.onKeyDown.bind(this)} onKeyUp={this.onKeyUp.bind(this)}>
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<div style={{ padding: 50 }}> {this.state.output} </div>
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</Hotkeys>
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)
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}
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}
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```
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## Browser Support
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Hotkeys.js has been tested and should work in.
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```shell
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Internet Explorer 6+
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Safari
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Firefox
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Chrome
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```
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## Supported Keys
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HotKeys understands the following modifiers: `⇧`, `shift`, `option`, `⌥`, `alt`, `ctrl`, `control`, `command`, and `⌘`.
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The following special keys can be used for shortcuts: backspace, tab, clear, enter, return, esc, escape, space, up, down, left, right, home, end, pageup, pagedown, del, delete and f1 through f19.
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`⌘` Command()
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`⌃` Control
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`⌥` Option(alt)
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`⇧` Shift
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`⇪` Caps Lock(Capital)
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~~`fn` Does not support fn~~
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`↩︎` return/Enter space
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## Defining Shortcuts
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One global method is exposed, key which defines shortcuts when called directly.
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```js
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hotkeys('f5', function(event, handler){
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// Prevent the default refresh event under WINDOWS system
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event.preventDefault()
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alert('you pressed F5!')
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});
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hotkeys('a', function(event,handler){
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//event.srcElement: input
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//event.target: input
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if(event.target === "input"){
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alert('you pressed a!')
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}
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alert('you pressed a!')
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});
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hotkeys('ctrl+a,ctrl+b,r,f', function(event,handler){
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switch(handler.key){
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case "ctrl+a":alert('you pressed ctrl+a!');break;
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case "ctrl+b":alert('you pressed ctrl+b!');break;
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case "r":alert('you pressed r!');break;
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case "f":alert('you pressed f!');break;
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}
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});
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hotkeys('*','wcj', function(e){
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console.log('do something',e);
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});
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```
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#### option
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- `scope<String>`
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- `element<HTMLElement>`
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```js
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hotkeys('o, enter', {
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scope: 'wcj',
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element: document.getElementById('warpper'),
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}, function(){
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console.log('do something else');
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});
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```
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## API REFERENCE
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Asterisk "*"
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Modifier key judgments
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```js
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hotkeys('*', function(e){
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if(hotkeys.shift) console.log('shift is pressed!');
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if(hotkeys.ctrl) console.log('ctrl is pressed!');
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if(hotkeys.alt) console.log('alt is pressed!');
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if(hotkeys.option) console.log('option is pressed!');
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if(hotkeys.control) console.log('control is pressed!');
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if(hotkeys.cmd) console.log('cmd is pressed!');
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if(hotkeys.command) console.log('command is pressed!');
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});
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```
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### setScope
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Use the `hotkeys.setScope` method to set scope.
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```js
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// define shortcuts with a scope
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hotkeys('ctrl+o, ctrl+alt+enter', 'issues', function(){
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console.log('do something');
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});
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hotkeys('o, enter', 'files', function(){
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console.log('do something else');
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});
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// set the scope (only 'all' and 'issues' shortcuts will be honored)
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hotkeys.setScope('issues'); // default scope is 'all'
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```
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### getScope
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Use the `hotkeys.getScope` method to get scope.
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```js
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hotkeys.getScope();
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```
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### deleteScope
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Use the `hotkeys.deleteScope` method to delete set scope.
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```js
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hotkeys.deleteScope('issues');
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```
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### unbind
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Similar to defining shortcuts, they can be unbound using `hotkeys.unbind`.
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```js
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// unbind 'a' handler
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hotkeys.unbind('a');
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// unbind a hotkeys only for a single scope
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// when no scope is specified it defaults to the current scope (hotkeys.getScope())
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hotkeys.unbind('o, enter', 'issues');
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hotkeys.unbind('o, enter', 'files');
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```
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### isPressed
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Other key queries. For example, `hotkeys.isPressed(77)` is true if the `M` key is currently pressed.
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```js
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hotkeys('a', function(){
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console.log(hotkeys.isPressed("a")); //=> true
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console.log(hotkeys.isPressed("A")); //=> true
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console.log(hotkeys.isPressed(65)); //=> true
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});
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```
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### getPressedKeyCodes
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returns an array of key codes currently pressed.
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```js
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hotkeys('command+ctrl+shift+a,f', function(){
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console.log(hotkeys.getPressedKeyCodes()); //=> [17, 65] or [70]
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})
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```
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### filter
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`INPUT` `SELECT` `TEXTAREA` default does not handle.
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`Hotkeys.filter` to return to the `true` shortcut keys set to play a role, `flase` shortcut keys set up failure.
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```js
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hotkeys.filter = function(event){
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return true;
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}
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//How to add the filter to edit labels. <div contentEditable="true"></div>
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//"contentEditable" Older browsers that do not support drops
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hotkeys.filter = function(event) {
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var tagName = (event.target || event.srcElement).tagName;
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return !(tagName.isContentEditable || tagName == 'INPUT' || tagName == 'SELECT' || tagName == 'TEXTAREA');
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}
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hotkeys.filter = function(event){
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var tagName = (event.target || event.srcElement).tagName;
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hotkeys.setScope(/^(INPUT|TEXTAREA|SELECT)$/.test(tagName) ? 'input' : 'other');
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return true;
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}
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```
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### noConflict
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Relinquish HotKeys’s control of the `hotkeys` variable.
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```js
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var k = hotkeys.noConflict();
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k('a', function() {
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console.log("do something")
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});
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hotkeys()
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// -->Uncaught TypeError: hotkeys is not a function(anonymous function)
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// @ VM2170:2InjectedScript._evaluateOn
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// @ VM2165:883InjectedScript._evaluateAndWrap
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// @ VM2165:816InjectedScript.evaluate @ VM2165:682
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```
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## Development
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To develop, run the self-reloading build, Get the code:
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```shell
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$ git https://github.com/jaywcjlove/hotkeys.git
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$ cd hotkeys # Into the directory
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$ npm install # or yarn install
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```
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To develop, run the self-reloading build:
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```shell
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$ npm run watch
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```
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Run Document Website Environment.
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```shell
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$ npm run doc:dev
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```
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To contribute, please fork Hotkeys.js, add your patch and tests for it (in the `test/` folder) and submit a pull request.
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```shell
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$ npm run test
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$ npm run test:watch # Development model
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```
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## License
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[MIT © Kenny Wong](https://kossnocorp.mit-license.org/)
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