js获取每个按键的ASCII值

通过js绑定键盘按下事件onkeydown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+'
KeyChar='+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>