jwerty.js

jwerty是一个JS类库帮助你针对元素和事件来绑定，触发和声明输入键组合。它将难于使用的标准api生成更加清晰并且容易使用的格式。所有的 jwerty事件都要求jwertycode。jwertycode可以以字符串或者数组传递，使用字符串可能是最简单的方式来生成组合。这个类库非常 小，压缩后1.5kb，gzipped大概3kb。不依赖任何类库。兼容jQuery，zepto或者Ender。

Use jwerty.key to bind your callback to a key combo (global shortcuts)

jwerty.key('ctrl+shift+P', function () { [...] });
jwerty.key('⌃+⇧+P', function () { [...] });
Specify optional keys:

jwerty.key('⌃+⇧+P/⌘+⇧+P', function () { [...] });
or key sequences:

jwerty.key('↑,↑,↓,↓,←,→,←,→,B,A,↩', function () { [...] });
You can also (since 0.3) specify regex-like ranges:

jwerty.key('ctrl+[a-c]', function () { [...] }); // fires for ctrl+a,ctrl+b or ctrl+c
Pass in a context to bind your callback:

jwerty.key('⌃+⇧+P/⌘+⇧+P', function () { [...] }, this);
Pass in a selector to bind a shortcut local to that element:

jwerty.key('⌃+⇧+P/⌘+⇧+P', function () { [...] }, this, '#myinput');
Pass in a selector's context, similar to jQuery's $('selector', 'scope'):

jwerty.key('⌃+⇧+P/⌘+⇧+P', function () { [...] }, this, 'input.email', '#myForm');
If you're binding to a selector and don't need the context, you can ommit it:

jwerty.key('⌃+⇧+P/⌘+⇧+P', function () { [...] }, 'input.email', '#myForm');
Calls to jwerty.key return a subscription handle that you can use to disconnect the callback

var h = jwerty.key('ctrl+shift+P', function () { [...] })
h.unbind()
Use jwerty.event as a decorator, to bind events your own way:

$('#myinput').bind('keydown', jwerty.event('⌃+⇧+P/⌘+⇧+P', function () { [...] }));
Use jwerty.is to check a keyCombo against a keyboard event:

function (event) {
if ( jwerty.is('⌃+⇧+P', event) ) {
[...]
}
}
Or use jwerty.fire to send keyboard events to other places:

jwerty.fire('enter', 'input:first-child', '#myForm');

文档：https://github.com/keithamus/jwerty