HTML attribute: required - HTML: HyperText Markup Language
https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/required
The Boolean required attribute, if present, indicates that the user must specify a value for the in…The required attribute is supported by text, search, url, tel, email, password, date, month, week, time, datetime-local, number, checkbox, radio, file, <input> types along with the <select> and <textarea> form control elements. If present on any of these input types and elements, the :requ… The attribute is not supported or relevant to range and color, as both have default values. It is al…Note color and range don't support required as both always have a value. Type color defaults to #000000. The default for range is the midpoint between min and max — with min and max defaulting to 0 and 100 respectively in most browsers if not declared.
The Boolean required attribute, if present, indicates that the user must specify a value for the in…The required attribute is supported by text, search, url, tel, email, password, date, month, week, time, datetime-local, number, checkbox, radio, file, <input> types along with the <select> and <textarea> form control elements. If present on any of these input types and elements, the :requ…
The attribute is not supported or relevant to range and color, as both have default values. It is al…Note color and range don't support required as both always have a value. Type color defaults to #000000. The default for range is the midpoint between min and max — with min and max defaulting to 0 and 100 respectively in most browsers if not declared.
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