feat: add observer for 'selected' setter of HTMLOptionElement and try to fix issue #746 #810
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Yuyz0112
reviewed
Jan 25, 2022
| let target = getEventTarget(event); | ||
| const userTriggered = event.isTrusted; | ||
| if (target && (target as Element).tagName === 'OPTION') | ||
| target = (target as Element).parentElement; |
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please inline the mechanism as comment at here
BTW, is there any doc/spec pointing out the parent element of option should be select?
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No problem, I will add it.
is there any doc/spec pointing out the parent element of option should be select
This is a good point, parent element could also be <optgroup> and <datalist> according to
captured from OptionElement MDN.
But these two elements aren't hooked for now, so this exception could be excluded by this conditionINPUT_TAGS.indexOf((target as Element).tagName) < 0
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If we change the 'selected' value of an option element, the value of its parent select element would be changed as well. So I add an observer for the 'selected' setter.