br-mousetrap

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

npm install br-mousetrap
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Mousetrap

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

It is around 1.7kb minified and gzipped and 3kb 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.

If you would like to donate to help support Mousetrap development use Gittip.

Getting started

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

    <script src="/path/to/mousetrap.min.js"></script>
    
  2. 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

Documentation

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

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