Example
Set a number field to read-only:
document.getElementById("myNumber").readOnly = true;
The result will be:
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
The readOnly property is supported in all major browsers.
Note: The <input type="number"> element is not supported in Internet Explorer 9 and earlier versions.
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;
The result of x will be:
true
Try it Yourself »
Related Pages
HTML reference: HTML <input> readonly attribute
< Input Number Object