禁用键盘上的指定键 兼容iE、Chrome、火狐

首先你要确定你是要禁用全局的还是指定控件 ，如我只要禁用一个文本框的上下键

NoExec = function(event) {

  var k = event.which || event.keyCode;

  if (k == 13 || k == 38 || k == 40) {

   if ($("#atWinByArea").attr("id")) {

    if (event.which) {//火狐

     event.preventDefault();

    } else {//IE、Chrome

     event.returnValue = false;

    }

   }

  }

  downAt(event);

 }

 var target = document.getElementById("saytext"); //指定的的控件Id

 if (target.addEventListener) {//绑定监听

  target.addEventListener("keydown", NoExec, false);

  target.addEventListener("keypress", NoExec, false);

 } else if (target.attachEvent) {

  target.attachEvent("onkeydown", NoExec);

 }

 

如果是全局的 就只要监听window.keyDown = function(event){.....} 一样一样的！~ 

键盘所对应的key值链接

http://blog.csdn.net/q410055954/article/details/8372778