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To make a select mandatory with HTML, use the required attribute. With the required attribute, the user must select a value before submitting the form; if the user refuses to select a value, then the form won't submit.

To make a select mandatory with HTML, use the required attribute. With the required attribute, the user must select a value before submitting the form; if the user refuses to select a value, then the form won't submit.

How to indicate a required field. Provide the required text in the label. Provide a graphic * image in the label with appropriate alt text. Providing a star (asterisk) symbol.

It is a common technique to add an asterisk * to a form control's label. Then, somewhere else on the page, for example below the form, this asterisk is explained to indicate a required input (in allusion to foot notes in text documents).

The :required selector selects form elements which are required. Form elements with a required attribute are defined as required. Note: The :required selector only applies to the form elements: input, select and textarea. Tip: Use the :optional selector to select form elements which are optional.

The required attribute is a boolean attribute. When present, it specifies that an input field must be filled out before submitting the form. Note: The required attribute works with the following input types: text, search, url, tel, email, password, date pickers, number, checkbox, radio, and file.

Required Attribute Validation doesn't Work with Unclosed Input Tags. If the field misses the closing tag at the end then most probably the validation won't work. So always close the tags in either way.

Required attribute: If you want to make an input mandatory to be entered by the user, you can use the required attribute. This attribute can be used with any input type such as email, URL, text, file, password, checkbox, radio, etc. This can help to make any input field mandatory.