你可以对document.onkeypress事件进行编写
<script>
document.attachEvent("onkeypress",hotkeyHandle);
function hotkeyHandle(){
var e=window.event;
var shiftKey=e.shiftKey;
var altKey=e.altKey;
var ctrlKey=e.ctrlKey;
var keyCode=e.keyCode;
var keyChar=String.fromCharCode(keyCode);
//下面要干什么是你自己判断的问题了哦
}
</script>