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<!DOCTYPE html>
<html>
<body>
<h1>JavaScript Operators</h1>
<h2>The instanceof Operator</h2>
<p>The instanceof operator returns true if an object is an instance of a specified object.</p>
<p id="demo"></p>
<script> 
const cars = ["Saab", "Volvo", "BMW"];
document.getElementById("demo").innerHTML =
(cars instanceof Array) + "<br>" + 
(cars instanceof Object) + "<br>" +
(cars instanceof String) + "<br>" +
(cars instanceof Number);
</script>
</body>
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</html>