HTML attribute: required - HTML: HyperText Markup Language
https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/required
WEBJan 24, 2024 · HTML attribute: required. The Boolean required attribute, if present, indicates that the user must specify a value for the input before the owning form can be submitted. The required attribute is supported by text, search, url, tel, email, password, date, month, week, time, datetime-local, number, checkbox, radio, file, <input> types …
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