javascript练习:84事件与事件驱动

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>New Web Project</title>
        <script language="JavaScript">
            function OnKeyUp(_e)
            {
                //var e = _e?_e:window.event;//获取有效的的事件对象
                if(event.keyCode == 13)//按下的是否是回车键
                {
                    alert("你输入的内容是:"+Text1.value);
                }
            }
        </script>
    </head>
    <body>
        <h1>事件处理事例</h1>
        <input id="Text1" type="text" onkeyup="OnKeyUp()" style=" 423px;height: 178px;" />
    </body>
</html>