禁止刷新网页、防止刷新网页、禁止后退等操作的代码
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript>
<title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title>
</head>
<body>
<script>
//屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键
function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键
function window.onhelp(){return false} //屏蔽F1帮助
function document.onkeydown(){
if((window.event.altKey)&&
((window.event.keyCode==37)|| //屏蔽Alt+方向键←
(window.event.keyCode==39))){ //屏蔽Alt+方向键→
alert("不准你使用ALT+方向键前进或后退网页！");
event.returnValue=false;
} if((event.keyCode==8)|| //屏蔽退格删除键
(event.keyCode==116)|| //屏蔽F5刷新键
(event.ctrlKey && event.keyCode==82)){ //Ctrl+R
event.keyCode=0;
event.returnValue=false;
}
if(event.keyCode==122){event.keyCode=0;event.returnValue=false;} //屏蔽F11
if(event.ctrlKey && event.keyCode==78)event.returnValue=false; //屏蔽Ctrl+n
if(event.shiftKey && event.keyCode==121)event.returnValue=false; //屏蔽shift+F10
if(window.event.srcElement.tagName=="A" && window.event.shiftKey)
window.event.returnValue=false; //屏蔽shift加鼠标左键新开一网页
if((window.event.altKey)&&(window.event.keyCode==115)){ //屏蔽Alt+F4
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;
}
}
</script>
屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键
</body>
</html>
