Example
An HTML form with a read-only input field:
<form
action="demo_form.asp">
Country:
<input type="text" name="country" value="Norway" readonly><br>
<input type="submit" value="Submit">
</form>
Try it Yourself »
Definition and Usage
The readonly attribute is a boolean attribute.
When present, it specifies that an input field is read-only.
A read-only input field cannot be modified (however, a user can tab to it, highlight it, and copy the text from it).
The readonly attribute can be set to keep a user from changing the value until some other conditions have been met (like selecting a checkbox, etc.). Then, a JavaScript can remove the readonly value, and make the input field editable.
Browser Support
The numbers in the table specify the first browser version that fully supports the attribute.
| Attribute | |||||
|---|---|---|---|---|---|
| readonly | 1.0 | 6.0 | 1.0 | 1.0 | 1.0 |
Differences Between HTML 4.01 and HTML5
NONE.
Differences Between HTML and XHTML
In XHTML, attribute minimization is forbidden, and the readonly attribute must be defined as <input readonly="readonly" />.
Syntax
<input readonly>