Google Analytics interferes with history.back() in android browser?
I have a html5 mobile app where everything exists on a single page and I use history.back/popstate/etc to change the contents of the page (via jQuery Mobile). I'm using Google Analytics to track various events, and on one page I track if the user exits via a particular button:
$('#my-back-button').bind('tap', function() {
_gaq.push(['_trackEvent', 'mycategory', 'myaction']);
history.back();
return false;
});
In the android 2.2 browser history.back() is called but onpopstate is not fired and the page isn't changed. If I put window.onpopstate = function() { alert("!"); }; window.onpopstate = function() { alert("!"); }; just before the history.back(), I see no alert.
If I reverse the two lines (history.back() first, then _gaq.push), it seems to work, but I can't rely on this kind of ordering throughout my code.
No exceptions are being thrown. It works fine in iOS and desktop Chrome.
Any ideas why history.back() doesn't work after a google analytics call?
Try wrapping the call to _ gaq.push() in a async timeout of 0:
$('#my-back-button').bind('tap', function() {
setTimeout(function() {
_gaq.push(['_trackEvent', 'mycategory', 'myaction']);
}, 0);
history.back();
return false;
});
This will allow history.back() to execute first before Google Analytics potentially affects the history stack.
嗯，好吧，真的很糟糕：如果将_gaq.push（）换成新函数并将history.go（）保留在原来的位置，会发生什么？
Maybe the call to google analytics adds a new entry to the history stack and history.back() just brings you to the page you are at the moment.
Or GA gives a new scope to history.
Try calling history.back() twice or use top.history.back() or window.history.back() or self.history.back()
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