HTML DOM readOnly Property
 Complete Password Object Reference
Definition and Usage
The readOnly property sets or returns whether or not a password field
should be read-only.
Syntax
passwordObject.readOnly=true|false
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Example
The following example makes a password field read-only:
<html>
<head>
<script type="text/javascript">
function makeReadOnly()
{
document.getElementById("password1").readOnly=true
}
</script>
</head>
<body>
<form>
<input type="password" id="password1" value="thgrt456" />
<input type="button" onclick="makeReadOnly()"
value="Make read-only" />
</form>
</body>
</html>
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Try-It-Yourself Demos
Make a password field read-only
Complete Password Object Reference
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