fix: Check for event.preventDefault() before setting state
#18
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MichaelDeBoey
approved these changes
Sep 27, 2022
Co-authored-by: Michaël De Boey <[email protected]>
brophdawg11
reviewed
Sep 29, 2022
| onChange?.(event); | ||
| if (!event.defaultPrevented) { | ||
| setDirty(true); | ||
| setValue(event.target.value); |
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I'm not sure this is what we want if the change event is prevented - since that happens after the input value has been set in the DOM (at least for text and similar inputs - would need to look closer on radio/checkbox). If we don't set the controlled value we can get into weird UI states:
Users can use onKeyDown currently to prevent typed characters.
I've been thinking for a while too that I'd like to take a stab at making this entire library uncontrolled and just always use inputEl.value, which would remove this setValue entirely. I think that's feasible and would get rid of the useState so might have the worlds tiniest perf improvement 🎻
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If a user prevents a form input's default behavior, the
onChangeingetInputAttrsshouldn't set state internally. To fix this I call the user's handler first, check forevent.defaultPreventedand then continue with the internal event handler.