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<!DOCTYPE html>
<html>
<body>

<p>The new ECMASCRIPT 5 method isArray returns true when used on an array.</p>

<p id="demo"></p>

<script>
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = Array.isArray(fruits);
</script>

</body>
</html>