Input Number required Attribute

HTML DOM Input Number Object

Definition and Usage

required Sets or returns whether the numeric field must be filled out before submitting the form.

This property reflects the HTML required attribute.

See also:

HTML Reference Manual:HTML <input> required Attribute

Example

Example 1

Check if the numeric field must be filled out before submitting the form:

var x = document.getElementById("myNumber").required;

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Example 2

Set the numeric field as a required part of the form submission:

document.getElementById("myNumber").required = true;

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Syntax

Return the required attribute:

numberObject.required

Set the required attribute:

numberObject.required = true|false

Attribute value

Value Description
true|false

Specify whether the numeric field should be a required part of the form submission.

  • true - The numeric field is a required part of the form submission
  • false - Default. The numeric field is not a required part of the form submission

Technical Details

Return value: Boolean value, returned if the numeric field is a required part of the form submission true; otherwise return false.

Browser Support

Chrome Edge Firefox Safari Opera
Chrome Edge Firefox Safari Opera
Supported 10.0 Supported Not Supported Supported

HTML DOM Input Number Object