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+'\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>