Input Number readOnly Property

❮ Input Number Object

Example

Set a number field to read-only:

document.getElementById("myNumber").readOnly = true;
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Description

The readOnly property sets or returns whether a number field should be read-only, or not.

A read-only field cannot be modified. However, a user can tab to it, highlight it, and copy the text from it.

This property reflects the HTML readonly attribute.

Tip: To prevent the user from interacting with the field, use the disabled property instead.


Browser Support

Property
readOnly Yes 10.0 Yes Yes Yes

Syntax

Return the readOnly property:

numberObject.readOnly

Set the readOnly property:

numberObject.readOnly = true|false

Property Values

Value Description
true|false Specifies whether a number field should be read-only, or not
  • true - The number field is read-only
  • false - Default. The number field is not read-only


Technical Details

Return Value: A Boolean, returns true if the number field is read-only, otherwise it returns false

More Examples

Example

Find out if a number field is read-only or not:

var x = document.getElementById("myNumber").readOnly;
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Related Pages

HTML reference: HTML <input> readonly attribute


❮ Input Number Object
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