js获取每个按键的ASCII值

js获取每个按键的ascii值

<script language="javascript">
//获取每个按键的值
function  keyDown()
{
var keycode=event.keyCode;
var keychar=String.fromCharCode(keycode);
console.log('ASCII='+keycode+'\nKeyChar='+keychar);
}
document.onkeydown=keyDown;
</script>

用ENTET代替TAB进行切换

<script language="javascript">
//用ENTER代替TAB
function  keyDown()
{
var  keycode=event.keyCode;
var  keyChar=String.fromCharCode(keycode);
if(keycode==13)
event.keyCode=9;
};
document.onkeydown=keyDown;
</script>