<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title>无标题文档</title>
<script>
function a(e){
var ent=window.event|e
if(document.all){
alert(e.keyCode)
}
else{
alert(e.which)
}
}
</script>
</head>
<body>
<input type="text" onkeypress="a(event)" />
</body>
</html>
通过key值可以查到是哪个键
document.onkeydown=function(e){console.log(e.keyCode)}
监听键盘事件,回车是13,空格是32;
你可以复制上面的代码,按F12 粘贴进控制台,按键盘就可以看到每个键对应的code