mousetrap

Mousetrap

Mousetrap is a simple library for handling keyboard shortcuts in Javascript.

It is licensed under the Apache 2.0 license.

It is around 2kb minified and gzipped and 4.5kb minified, has no external dependencies, and has been tested in the following browsers:

• Internet Explorer 6+
• Safari
• Firefox
• Chrome

It has support for keypress, keydown, and keyup events on specific keys, keyboard combinations, or key sequences.

Getting started

• Include mousetrap on your page before the closing </body> tag

  <script src="/path/to/mousetrap.min.js"></script>
  

  or install mousetrap from npm and require it

  var Mousetrap = require('mousetrap');
  

• Add some keyboard events to listen for

  <script>
      // single keys
      Mousetrap.bind('4', function() { console.log('4'); });
      Mousetrap.bind("?", function() { console.log('show shortcuts!'); });
      Mousetrap.bind('esc', function() { console.log('escape'); }, 'keyup');
  
      // combinations
      Mousetrap.bind('command+shift+k', function() { console.log('command shift k'); });
  
      // map multiple combinations to the same callback
      Mousetrap.bind(['command+k', 'ctrl+k'], function() {
          console.log('command k or control k');
  
          // return false to prevent default browser behavior
          // and stop event from bubbling
          return false;
      });
  
      // gmail style sequences
      Mousetrap.bind('g i', function() { console.log('go to inbox'); });
      Mousetrap.bind('* a', function() { console.log('select all'); });
  
      // konami code!
      Mousetrap.bind('up up down down left right left right b a enter', function() {
          console.log('konami code');
      });
  </script>
  

Why Mousetrap?

There are a number of other similar libraries out there so what makes this one different?

• There are no external dependencies, no framework is required
• You are not limited to keydown events (You can specify keypress, keydown, or keyup or let Mousetrap choose for you).
• You can bind key events directly to special keys such as ? or * without having to specify shift+/ or shift+8 which are not consistent across all keyboards
• It works with international keyboard layouts
• You can bind Gmail like key sequences in addition to regular keys and key combinations
• You can programatically trigger key events with the trigger() method
• It works with the numeric keypad on your keyboard
• The code is well documented/commented

Tests

Unit tests are run with mocha.

Running in browser

View it online to check your browser compatibility. You may also download the repo and open tests/mousetrap.html in your browser.

Running with Node.js

• Install development dependencies

  cd /path/to/repo
  npm install
  

• Run tests

  npm test
  

Documentation

Full documentation can be found at https://craig.is/killing/mice

Similar packages

Other packages similar to mousetrap

keymaster

Keymaster is a simple micro-library for defining and dispatching keyboard shortcuts. It is similar to Mousetrap in that it allows you to bind key combinations to functions, but it is more lightweight and has a simpler API.

hotkeys-js

Hotkeys-js is a robust library for handling keyboard shortcuts. It offers more features than Mousetrap, such as support for key sequences and key scopes, making it a more versatile option for complex applications.

keyboardjs

KeyboardJS is a library for handling keyboard input. It provides a more comprehensive set of features compared to Mousetrap, including support for key sequences, key combos, and key states, making it suitable for more advanced use cases.