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Home/ Questions/Q 5966849
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Editorial Team
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Editorial Team
Asked: May 22, 20262026-05-22T19:51:29+00:00 2026-05-22T19:51:29+00:00

I have an existing prototype codebase that does stuff on selectbox changes… I have

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I have an existing prototype codebase that does stuff on selectbox changes…

I have used jQuery that generates (styled) unordered-lists and I wish to proxy clicks to that list to my selectbox… This all works fine (calling val() on selectbox), but prototype doesnt pick up on these changes, even when I explicitly call change() on the selectbox… Anyone know what is going on?

I could post a bunch of code but it is all very basic, I think the only relevant part is:

parent_obj.val(selected_idx).change();

Which does change the selected item in my selectbox, but doesn’t fire my prototype event handler.

edit:

There will probably be an answer about using trigger() etc… that doesn’t seem to work either:

parent_obj.val(selected_idx).click().change().trigger('click');
parent_obj.find('option value[' + selected_idx + ']').click().change().trigger('click');
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  1. Editorial Team
    Editorial Team
    2026-05-22T19:51:30+00:00Added an answer on May 22, 2026 at 7:51 pm

    I ended up using prototype Event.simulate as suggested by this answer;

    Trigger an event with Prototype

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