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HTML <select> required Attribute

HTML <select> tag

Example

An HTML form with a required drop-down list:

<label for="cars">Choose a car:</label>

<select id="cars" required>
  <option value="">None</option>
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
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Definition and Usage

The required attribute is a boolean attribute.

When present, it specifies the user is required to select a value before submitting the form.


Browser Support

Attribute
required Yes 10.0 4.0  Yes Yes

Differences Between HTML 4.01 and HTML5

The required attribute is new in HTML5.


Differences Between HTML and XHTML

In XHTML, attribute minimization is forbidden, and the required attribute must be defined as <select required="required" />.


Syntax

<select required>

HTML <select> tag