转自:https://baike.1688.com/doc/view-d37128696.html
window.onbeforeunload=function(e){
e=e||window.event;//ForIEandFirefoxpriortoversion4
if(e){
e.returnValue='确定退出吗?';
}
//ForSafari
return'确定退出吗?';
};
转自:https://baike.1688.com/doc/view-d37128696.html
window.onbeforeunload=function(e){
e=e||window.event;