I'm trying to deal with one userscript user may have installed when he visits my site. As it works in a sandbox, I can't directly turn off some of the userscript's features that interfere with my site's native functionality. So the only option for me is to access them though the UI. First I needed to change one particular checkbox. First I tried to use jQuery's .val() method but it did not work. Then I did this:
if($('#someinput:checked').length) $('#someinput')[0].click();
And then it worked, the unwanted feature got turned off. Next one was <select>. Just .val() did'n help as expected, so I also triggered the change event right after I changed the value:
$('select[name=someselect]').val(0);
$('select[name=someselect]')[0].change();
But it still does not work. I guess I need to trigger change event somehow more properly. How do I do that?
I found a solution here on SO:
Basically as far as I understand it fires all the native events properly and it's neatly wrapped into a jQuery plugin.