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<!DOCTYPE html>
<html>
<body>
​
<p>Please input a number between 1 and 10:</p>
​
<input id="numb" type="text">
​
<button type="button" onclick="myFunction()">Submit</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var x, text;
​
  // Get the value of input field with id="numb"
​
  x = document.getElementById("numb").value;
​
  // If x is Not a Number or less than one or greater than 10, output "input is not valid"
  // If x is a number between 1 and 10, output "Input OK"
   
  if (isNaN(x) || x < 1 || x > 10) {
    text = "Input not valid";
  } else {
    text = "Input OK";
  }
  document.getElementById("demo").innerHTML = text;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_state_if_else3 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:01:34 GMT -->
</html> 
​
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