<!DOCTYPE html>
<html>
<body>
Address:<br>
<textarea id="myTextarea">
342 Alvin Road
Ducksburg</textarea>
<br>
<button onclick="disableTxt()">Disable text area</button>
<button onclick="undisableTxt()">Undisable text area</button>
<script>
function disableTxt() {
document.getElementById("myTextarea").disabled = true;
}
function undisableTxt() {
document.getElementById("myTextarea").disabled = false;
}
</script>
</body>
</html>