Input Number readOnly Property
Example
Set a number field to read-only:
document.getElementById("myNumber").readOnly = true;
Try it Yourself »
Definition and Usage
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
|
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
