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使用前卸载和卸载一起?
原标题:Using beforeunload and unload together?

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 () {

});
最佳回答

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();
});
问题回答

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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