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<!DOCTYPE html>
<html>
<body>
​
<form action="https://www.w3schools.com/action_page.php" method="get">
  Pick a number between 2 and 5: <input type="number" id="myInput" name="quantity" min="2" max="5" required>
  <input type="submit" value="Submit">
</form>
​
<p>If you submit the form with a number that is less than 2 or greater than 5,
an alert message will occur.</p>
​
<p><strong>Note:</strong> The oninvalid event is not supported in Internet Explorer 9 and earlier or Safari.</p>
​
<script>
document.getElementById("myInput").addEventListener("invalid", myFunction);
​
function myFunction() {
  alert("You must pick a number between 2 and 5. You chose: " + this.value);
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_oninvalid3 by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 14:04:37 GMT -->
</html>
​
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