<!DOCTYPE html>
<html>
<body>
Address:<br>
<textarea id="myTextarea" readonly>
342 Alvin Road
Ducksburg</textarea>
<p>Click the button to find out whether the text area is read-only, or not.</p>
<button type="button" onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myTextarea").readOnly;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>