window.onbeforeunload = function(event){
return onBeforeUnload(event);
}
function onBeforeUnload(event){
var clientBrowser = chargeBrowser();
var isIE = document.all?true:false;//另一方法
var evt = event ? event : (window.event ? window.event : null);
if(clientBrowser=="IE"){
var n = evt.screenX - window.screenLeft;
var b = n > document.documentElement.scrollWidth - 20;
if(b && evt.clientY < 0 || evt.altKey){
console.log("IE关闭非刷新");
return confirm("您确定要离开系统么?IE关闭非刷新");
}else{
console.log("IE刷新非关闭");
return confirm("您确定要离开系统么?IE刷新非关闭");
}
}else{
if(document.documentElement.scrollWidth != 0){
console.log("FF刷新非关闭");
return confirm("您确定要离开系统么?FF刷新非关闭");
}else{
console.log("FF关闭非刷新");
return confirm("您确定要离开系统么?FF关闭非刷新");
}
}
}
function chargeBrowser() {
var userAgent = navigator.userAgent;
var isOpera = userAgent.indexOf("Opera") > -1;
if (isOpera) {
return "Opera"
}else if(userAgent.indexOf("Firefox") > -1) {
return "Firefox";
}else if(userAgent.indexOf("Chrome") > -1){
return "Chrome";
}else if(userAgent.indexOf("Safari") > -1) {
return "Safari";
}else if(userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera) {
return "IE";
}else if(userAgent.indexOf("Trident") > -1) {
return "Edge";
}else if(userAgent.indexOf("QQ") > -1) {
return "QQ";
}else{
return "";
}
}
js判断不同浏览器关闭tab还是刷新
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转载自blog.csdn.net/sinat_36707441/article/details/82253793
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