网页ESC使用

来源：互联网发布：js自动清除缓存编辑：程序博客网时间：2024/05/01 12:50
<html xmlns="http://www.w3.org/1999/xhtml">    <head>        <title>Demo</title>        <script language="JavaScript" type="text/javascript">                function resetEscAndF5(e) {            e = e ? e : window.event;            actualCode = e.keyCode ? e.keyCode : e.charCode;            if(actualCode == 27) {                document.getElementById("D1").style.visibility=document.getElementById("D1").style.visibility=="hidden"?"visible":"hidden";            }            }            function _attachEvent(obj, evt, func) {                if(obj.addEventListener) {                obj.addEventListener(evt, func, false);                } else if(obj.attachEvent) {                obj.attachEvent("on" + evt, func);                }                }            _attachEvent(document.documentElement, 'keydown', resetEscAndF5);            </script>     </head>    <body>                <div id="D1"             style="height: 320px; width: 800px; position: absolute; top: 100px; left: 182px; background-color: #CC0000; visibility:hidden;">        </div>            </body></html>