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<!DOCTYPE html>
<html>
<body>
​
<p>Enter a number and click OK:</p>
​
<input id="id1" type="number" max="100">
<button onclick="myFunction()">OK</button>
​
<p>If the number is greater than 100 (the input's max attribute), an error message will be displayed.</p>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var txt = "";
  if (document.getElementById("id1").validity.rangeOverflow) {
    txt = "Value too large";
  } else {
    txt = "Input OK";
  } 
  document.getElementById("demo").innerHTML = txt;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_validation_rangeOverflow by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 13:23:19 GMT -->
</html>
​
​
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