Unload Event In IE10, No Form Data
I have window.unload hooked to save my form data in emergencies when the user just closes their browser. I send this using ajax via POST. This works in IE9, Chrome etc, but not in
Solution 1:
I assume, you are using code like this:
<html>
...
<body onunload="inOnUnload();">
...
with an inOnUnload()-function being defined like the following:
function inOnUnload() {
xmlhttp.open("POST", "http://some-location", /*async*/ true);
http.send(request);
}
The problem with this in IE10 is that it seems to cancel the request, after the document has finally been unloaded. This happens before the form data had a chance to leaf the client. To send data in onunload events in IE10, you must use the async = false parameter in XMLHttpRequest.open(...).
The following works fine for me:
function inOnUnload() {
xmlhttp.open("POST", "http://some-location", /*async*/ /*!!!*/ false);
http.send(request);
}
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