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<html><body><input type="number" id="myNumber" value="2"><p>Click the button to set the number field to read-only.</p><p><strong>Tip:</strong> To see the effect, try to type something in the number field before and after clicking the button.</p><button onclick="myFunction()">Try it</button><p><strong>Note:</strong> input elements with type="number" are not supported in IE 9 and earlier versions.</p><p id="demo"></p><script>function myFunction() { document.getElementById("myNumber").readOnly = true;}</script></body><!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_number_readonly by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:16:55 GMT --></html>