我听说歌剧不与前卸载操作。 还有一些早期版本的 IE 。 因此, 我怎样才能一起使用这些呢? 如果我在下面使用, 它在Firefox 中运行了两次(它们都工作过 ) 。
$(window).bind( beforeunload , function () {
});
$(window).unload(function () {
});
我听说歌剧不与前卸载操作。 还有一些早期版本的 IE 。 因此, 我怎样才能一起使用这些呢? 如果我在下面使用, 它在Firefox 中运行了两次(它们都工作过 ) 。
$(window).bind( beforeunload , function () {
});
$(window).unload(function () {
});
这样做有几种方法。 以下的例子使用全球旗帜是相当直截了当的。
var hasUnloadBeenHandled = false;
function onUnload() {
if (hasUnloadBeenHandled) {
return;
}
//Whatever you want to be handled on unload OR on beforeunload
hasUnloadBeenHandled = true;
}
$(window).bind( beforeunload , function () {
onUnload();
});
$(window).unload(function () {
onUnload();
});
您需要使用某种旗帜, 或者您可以使用这样的“ href=” http://documentcloud.github.com/underscore/# once” rel=“ no follow” >http://docuscloud.github.com/underscore/#once
function unloadHandler(m){
alert(m);
}
if ($(window).unload) {
$(window).unload(function() {
unloadHandler("unload");
});
} else if ($(window).beforeunload) {
$(window).bind( beforeunload , function() {
unloadHandler("beforeunload");
});
}
我不是 Javascript / JQuery 的家伙, 但是您不能使用一个全局变量来跟踪该方法是否应该运行吗?
类似的东西
var runme = true;
$(window).bind( beforeunload , function () {
if(runme){
runme=false;
}
});
$(window).unload(function () {
if(runme){
runme=false;
}
});
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