<!DOCTYPE html>
<html>
<body>
<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 x + "<br>" + x;
}
</script>
</body>
</html>