方式一:(適用與IE瀏覽器,而且重新整理不提示,只在點擊瀏覽器關閉按鈕的時候提示)
<script type="text/javascript">
window.onbeforeunload=onclose;
function onclose()
{
if(event.clientX>document.body.clientWidth&&event.clientY<0||event.altKey)
{
return "您要離開嗎?";
}
}
</script>
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方式二:適用與IE和FF,不區分重新整理和關閉
<script type="text/javascript">
window.onbeforeunload = onbeforeunload_handler;
window.onunload = onunload_handler;
function onbeforeunload_handler(){
var warning="確認退出?";
return warning;
}
function onunload_handler(){
var warning="謝謝光臨";
alert(warning);
}
</script>
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方式三:適用與IE和FF,不區分重新整理和關閉,最簡單的
<script type="text/javascript">
window.onbeforeunload=onclose;
function onclose()
{
return "您確定退出嗎?";
}
</script>
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方式四:適用與IE和FF,不區分重新整理和關閉,稍複雜的
<script language="javascript">
var MSG_UNLOAD="如果你此時離開檔案系統,所做操作資訊將全部丟失,是否離開?";
var UnloadConfirm = {};
//啟用監聽瀏覽器重新整理、關閉的方法
UnloadConfirm.set = function(confirm_msg){
window.onbeforeunload = function(event){
event = event || window.event;
event.returnValue = confirm_msg;
}
}
//關閉監聽瀏覽器重新整理、關閉的方法
UnloadConfirm.clear = function(){
window.onbeforeunload = function(){};
}
UnloadConfirm.set(MSG_UNLOAD);
</script>
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方式五:只適用於IE6下的關閉按鈕和快速鍵關閉的,重新整理不提示
<script type="text/javascript">
window.onbeforeunload=onclose;
function onclose()
{
var warnning = '<fmt:message key="systemMessage.exitWarning" />';
var beforeExit='<fmt:message key="systemMessage.beforeExitWarning" />';
if(event.clientY<0 && event.clientX>document.body.clientWidth-20 || event.clientY<0 && event.clientX<20 ||
event.altKey || event.ctrlKey || event.clientY>document.body.clientHeight){
alert(beforeExit);
return warnning;
}
}
</script>
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另附判斷瀏覽器類型的JS
<script type="text/javascript">
var Sys = {};
var ua = navigator.userAgent.toLowerCase();
if (window.ActiveXObject)
Sys.ie = ua.match(/msie ([\d.]+)/)[1]
else if (document.getBoxObjectFor)
Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1]
else if (window.MessageEvent && !document.getBoxObjectFor)
Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1]
else if (window.opera)
Sys.opera = ua.match(/opera.([\d.]+)/)[1]
else if (window.openDatabase)
Sys.safari = ua.match(/version\/([\d.]+)/)[1];
//以下進行測試
if(Sys.ie) document.write('IE: '+Sys.ie);
if(Sys.firefox) document.write('Firefox: '+Sys.firefox);
if(Sys.chrome) document.write('Chrome: '+Sys.chrome);
if(Sys.opera) document.write('Opera: '+Sys.opera);
if(Sys.safari) document.write('Safari: '+Sys.safari);
</script>
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區分瀏覽器,IE和FF分別處理(奇怪的是,IE下有時候失效)
<script type="text/javascript">
window.onbeforeunload=onclose;
function onclose()
{
var Sys = {};
var warnning = '<fmt:message key="systemMessage.exitWarning" />';
var ua = navigator.userAgent.toLowerCase();
if (window.ActiveXObject)
Sys.ie = ua.match(/msie ([\d.]+)/)[1]
else if (document.getBoxObjectFor)
Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1]
if(Sys.ie) {//for IE
if(event.clientX>document.body.clientWidth&&event.clientY<0||event.altKey)
{
window.event.returnValue = warnning ;
}
}
if(Sys.firefox) //for FF
return warnning;
}
</script>
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最簡單的判斷瀏覽器類型的方法
<script type="text/javascript">
if(-[1,]){
alert("這不是IE瀏覽器!");
}else{
alert("這是IE瀏覽器!");
}
</script>
[1,]在標準瀏覽器會返回字串"1",相當於調用[1,].toString,
,IE則返回"1,"。但是這樣IE與標準都會通過檢測,因此使用負號強制轉換為數字,
標準能成功轉換為1,1會在if中自動轉換為true,而IE則轉換為NaN,再自動轉換為false!