<html>
<body>
Quantity:
<input type="number" id="myNumber" min="1" max="5">
<p>Click the button to change the value of the max attribute of the number field.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myNumber").max = "10";
document.getElementById("demo").innerHTML = "The value of the max attribute was changed from '5' to '10'.";
}
</script>
</body>
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</html>