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<!DOCTYPE html>
<html>
<body>
​
<input type="number" id="myNumber" value="2"><br><br>
​
<button onclick="disableBtn()">Disable Number Field</button>
<button onclick="undisableBtn()">Undisable Number Field</button>
​
<p><strong>Note:</strong> input elements with type="number" are not supported in IE 9 and earlier versions.</p>
​
<script>
function disableBtn() {
  document.getElementById("myNumber").disabled = true;
}
function undisableBtn() {
  document.getElementById("myNumber").disabled = false;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_number_disabled3 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:17:18 GMT -->
</html>
​
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