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<!DOCTYPE html>
<html>
<body>
​
<h2>The JavaScript typeof Operator</h2>
​
<p>The typeof operator returns the type of a variable or expression.</p>
​
<button onclick="myFunction()">Try it</button>
​
<p id="demo"></p>
​
<script>
function myFunction() {
  var y = "John";
  var x = + y;
  document.getElementById("demo").innerHTML = typeof y + "<br>" + typeof x;
}
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_typeof4 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:39:32 GMT -->
</html>
​
​
​
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