js 中 处理CTRL键

这是一个在Javascript中处理CTRL键的简单的例子

 

< script language = " javascript " >   
function  keyDown(e) ... {  
    var ieKey=event.keyCode;  
    if(event.ctrlKey)
      document.forms[0].myKey.value="ctrl";  
    else
      document.forms[0].myKey.value=""; 

      if(event.keyCode!=17)document.forms[0].myKey.value=document.forms[0].myKey.value + "("+ieKey + ")"; 
}   
document.onkeydown = keyDown;  
script >  
< form name = " keyform " >< input type = " text "  name = " myKey "  value = ""  size = " 20 " > form >