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<!DOCTYPE html>
<html>
<body>
​
<p>The typeof operator returns the type of a variable or an expression.</p>
​
<p id="demo"></p>
​
<script>
document.getElementById("demo").innerHTML = 
typeof "" + "<br>" +
typeof "John" + "<br>" + 
typeof "John Doe" + "<br>" +
typeof 0 + "<br>" +
typeof 314 + "<br>" +
typeof 3.14 + "<br>" +
typeof (3.14);
</script>
</body>
​
<!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_datatypes_typeof by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:28:12 GMT -->
</html>
​
​
​
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