Remove jQuery workaround that's no longer needed

[mbest]

Code in question:

knockout/src/utils.js

Line 301 in 1f0e337

if (isClickOnCheckableElement(element, eventType)) {

jQuery 1.9 upgrade notes: http://jquery.com/upgrade-guide/1.9/#checkbox-radio-state-in-a-trigger-ed-quot-click-quot-event

jQuery bug ticket: http://bugs.jquery.com/ticket/3827

[mbest]

Related to issue #987

[mbest]

We should be able to remove it for jQuery version 1.9 and higher, at least.

The code should also be updated to check if the checked value was modified by the event callback (for example, in response to some validation check), and then not reset it.

[mbest]

It appears that this was only fixed in jQuery for checkboxes and not for radio buttons. The 1.9 upgrade notes mention both, but this is wrong.

[SteveSanderson]

Nice, thanks!

[shri3k]

@mbest Late to the party, but I'm facing the issue that you mentioned about the radio button. I've tried upgrading jQuery to 1.11.2 (can't upgrade to 2.x, blame IE 😞 ) too but didn't do much help. However, I did add back the fragment of code that was removed from this commit and it worked like it used to on Knockout 3.0. I'm currently on 3.3 right now but just wanted to check if there's any work being done on this part. Also, let me know if I can help in any form.

[mbest]

@sinkingshriek As far as we know, it's working. If you can put together an example that doesn't work properly, please open a new issue with the details.