HTML <input> required Attribute (original) (raw)

Last Updated : 25 May, 2026

The required attribute is used to make an input field mandatory before submitting a form. It helps ensure that users fill in important fields.

• Prevents form submission if the input field is left empty.
• Commonly used with text fields, email inputs, checkboxes, and other form elements.
• It is a boolean attribute, so its presence alone makes the field required.

**Syntax:

**Example 1: Illustrates the use of required attribute in input Element.

html `