iejava不更新失败_fireFoxIE刷新不提示

方式一&＃xff1a;(适用与IE浏览器&＃xff0c;而且刷新不提示&＃xff0c;只在点击浏览器关闭按钮的时候提示)

window.οnbefοreunlοad&＃61;onclose;

function onclose()

{

if(event.clientX>document.body.clientWidth&&event.clientY<0||event.altKey)

{

return "您要离开吗&＃xff1f;";

}

}

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方式二&＃xff1a;适用与IE和FF&＃xff0c;不区分刷新和关闭

window.onbeforeunload &＃61; onbeforeunload_handler;

window.onunload &＃61; onunload_handler;

function onbeforeunload_handler(){

var warning&＃61;"确认退出?";

return warning;

}

function onunload_handler(){

var warning&＃61;"谢谢光临";

alert(warning);

}

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方式三&＃xff1a;适用与IE和FF&＃xff0c;不区分刷新和关闭&＃xff0c;最简单的

window.οnbefοreunlοad&＃61;onclose;

function onclose()

{

return "您确定退出吗&＃xff1f;";

}

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方式四&＃xff1a;适用与IE和FF&＃xff0c;不区分刷新和关闭&＃xff0c;稍复杂的

var MSG_UNLOAD&＃61;"如果你此时离开档案系统&＃xff0c;所做操作信息将全部丢失&＃xff0c;是否离开?";

var UnloadConfirm &＃61; {};

//启用监听浏览器刷新、关闭的方法

UnloadConfirm.set &＃61; function(confirm_msg){

window.onbeforeunload &＃61; function(event){

event &＃61; event || window.event;

event.returnValue &＃61; confirm_msg;

}

}

//关闭监听浏览器刷新、关闭的方法

UnloadConfirm.clear &＃61; function(){

window.onbeforeunload &＃61; function(){};

}

UnloadConfirm.set(MSG_UNLOAD);

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方式五&＃xff1a;只适用于IE6下的关闭按钮和快捷键关闭的&＃xff0c;刷新不提示

window.οnbefοreunlοad&＃61;onclose;

function onclose()

{

var warnning &＃61; &＃39;&＃39;;

var beforeExit&＃61;&＃39;&＃39;;

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;

}

}

****************************************************************************************************

另附判断浏览器类型的JS

var Sys &＃61; {};

var ua &＃61; navigator.userAgent.toLowerCase();

if (window.ActiveXObject)

Sys.ie &＃61; ua.match(/msie ([\d.]&＃43;)/)[1]

else if (document.getBoxObjectFor)

Sys.firefox &＃61; ua.match(/firefox\/([\d.]&＃43;)/)[1]

else if (window.MessageEvent && !document.getBoxObjectFor)

Sys.chrome &＃61; ua.match(/chrome\/([\d.]&＃43;)/)[1]

else if (window.opera)

Sys.opera &＃61; ua.match(/opera.([\d.]&＃43;)/)[1]

else if (window.openDatabase)

Sys.safari &＃61; ua.match(/version\/([\d.]&＃43;)/)[1];

//以下进行测试

if(Sys.ie) document.write(&＃39;IE: &＃39;&＃43;Sys.ie);

if(Sys.firefox) document.write(&＃39;Firefox: &＃39;&＃43;Sys.firefox);

if(Sys.chrome) document.write(&＃39;Chrome: &＃39;&＃43;Sys.chrome);

if(Sys.opera) document.write(&＃39;Opera: &＃39;&＃43;Sys.opera);

if(Sys.safari) document.write(&＃39;Safari: &＃39;&＃43;Sys.safari);

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区分浏览器&＃xff0c;IE和FF分别处理(奇怪的是,IE下有时候失效)

window.οnbefοreunlοad&＃61;onclose;

function onclose()

{

var Sys &＃61; {};

var warnning &＃61; &＃39;&＃39;;

var ua &＃61; navigator.userAgent.toLowerCase();

if (window.ActiveXObject)

Sys.ie &＃61; ua.match(/msie ([\d.]&＃43;)/)[1]

else if (document.getBoxObjectFor)

Sys.firefox &＃61; ua.match(/firefox\/([\d.]&＃43;)/)[1]

if(Sys.ie) {//for IE

if(event.clientX>document.body.clientWidth&&event.clientY<0||event.altKey)

{

window.event.returnValue &＃61; warnning ;

}

}

if(Sys.firefox) //for FF

return warnning;

}

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最简单的判断浏览器类型的方法

if(-[1,]){

alert("这不是IE浏览器&＃xff01;");

}else{

alert("这是IE浏览器&＃xff01;");

}

[1&＃xff0c;]在标准浏览器会返回字符串"1",相当于调用[1,].toString,

,IE则返回"1,"。但是这样IE与标准都会通过检测&＃xff0c;因此使用负号强制转换为数字&＃xff0c;

标准能成功转换为1&＃xff0c;1会在if中自动转换为true&＃xff0c;而IE则转换为NaN,再自动转换为false!