Here is an additional past discussion of this topic:
https://lists.w3.org/Archives/Public/public-webapps/2014JanMar/0232.html
Sincerely,
James Greene
On Fri, Feb 6, 2015 at 9:54 AM, Florian Bösch <pyalot@gmail.com> wrote:
> I had an Android device, but now I have an iPhone. In addition to the
>> popup problem, and the fake "X" on ads, the iPhone browsers (Safari,
>> Chrome, Opera) will start to show a site, then they will lock up for 10-30
>> seconds before finally becoming responsive.
>
>
> Via. Ask Slashdot:
> http://ask.slashdot.org/story/15/02/04/1626232/ask-slashdot-gaining-control-of-my-mobile-browser
>
> Note: Starting with Gecko 30.0 (Firefox 30.0 / Thunderbird 30.0 /
>> SeaMonkey 2.27), synchronous requests on the main thread have been
>> deprecated due to the negative effects to the user experience.
>
>
>
> Via
> https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Synchronous_and_Asynchronous_Requests
>
> Heads up! The XMLHttpRequest2 spec was recently changed to prohibit
>> sending a synchronous request whenxhr.responseType is set. The idea behind
>> the change is to help mitigate further usage of synchronous xhrs wherever
>> possible.
>
>
> Via http://updates.html5rocks.com/2012/01/Getting-Rid-of-Synchronous-XHRs
>
>
>
Received on Friday, 6 February 2015 16:52:54 UTC