Direct link to the article Radio Buttons Are Like Selects; Checkboxes Are Like Multiple Selects

Radio Buttons Are Like Selects; Checkboxes Are Like Multiple Selects

I was reading Anna Kaley’s “Listboxes vs. Dropdown Lists” post the other day. It’s a fairly straightforward comparison between different UI implementations of selecting options. There is lots of good advice there. Classics like that you should use radio buttons …

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Indeterminate Checkboxes

While checkboxes can only either submit their value (checked state) or not (unchecked state), they have a third visual-only state: indeterminate. This is only settable via JavaScript and does not affect the value, only the appearance. We'll cover how it works and a simple use case.
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