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js event binding shortcut key using ctrl k as an example_javascript skills

WBOY
WBOYOriginal
2016-05-16 16:34:491624browse

js code

<html> 
<head> 
<script type="text/javascript"> 
window.onload=function(){ 
HotKeyHandler.Init(); 
} 
var HotKeyHandler={ 
currentMainKey:null, 
currentValueKey:null, 
Init:function(){ 
HotKeyHandler.Register(0,"K",function(){alert("注册成功");}); 
}, 
Register:function(tag,value,func){ 
var MainKey=""; 
switch(tag){ 
case 0: 
MainKey=17; //Ctrl 
break; 
case 1: 
MainKey=16; //Shift 
break; 
case 2: 
MainKey="18"; //Alt 
break; 
} 
document.onkeyup=function(e){ 
HotKeyHandler.currentMainKey=null; 
} 

document.onkeydown=function(event){ 
//获取键值 
var keyCode= event.keyCode ; 
var keyValue = String.fromCharCode(event.keyCode); 

if(HotKeyHandler.currentMainKey!=null){ 
if(keyValue==value){ 
HotKeyHandler.currentMainKey=null; 
if(func!=null)func(); 
} 
} 
if(keyCode==MainKey) 
HotKeyHandler.currentMainKey=keyCode; 
} 
} 
} 
</script> 
</head> 
<body> 
测试，按下ctrl+k你就会发现神奇的事情发生了 
</body> 
</html>
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