YouTipHTML DOM Input Number readOnly Property
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Input Number readOnly Property
Example
Set the number field to read-only:
document.getElementById("myNumber").readOnly = true;Output:
Definition and Usage
The readOnly property is used to set or return whether a number field is read-only.
A read-only field cannot be modified. However, the content of the field can be copied.
This property reflects the HTML readonly attribute.
Tip: To ensure the accuracy of form data, you can use the disabled property instead.
Browser Support
All major browsers support the readOnly property.
Note: Internet Explorer 9 and earlier versions do not support the <input> element with the type="number" attribute.
Syntax
Get the readOnly property:
numberObject.readOnlySet the readOnly property:
numberObject.readOnly=true|falseProperty Values
| Value | Description |
|---|---|
| true|false | Specifies whether the number field is read-only
|
Technical Details
| Return Value: | A Boolean. Returns true if the number field is read-only, otherwise returns false. |
|---|
More Examples
Example
Check if the number field is read-only:
var x = document.getElementById("myNumber").readOnly;The value of x will be:
trueRelated Pages
HTML Reference: HTML <input> readonly Attribute