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<!DOCTYPE html>
<html>
<body>
​
<h2>The JavaScript typeof Operator</h2>
​
<p>The typeof operator returns the type of a variable, object, function or expression.</p>
​
<p id="demo"></p>
​
<script>
document.getElementById("demo").innerHTML = 
  typeof "john" + "<br>" +
  typeof 3.14 + "<br>" +
  typeof NaN + "<br>" +
  typeof false + "<br>" +
  typeof [1,2,3,4] + "<br>" +
  typeof {name:'john', age:34} + "<br>" +
  typeof new Date() + "<br>" +
  typeof function () {} + "<br>" +
  typeof myCar + "<br>" +
  typeof null;
</script>
​
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_typeof_all by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:28:15 GMT -->
</html>
​
​
​
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