Java Script Array Advanced Methods

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<h2>JavaScript Arrays</h2>

<p>The Array.keys() method returns an Array Iterator object with the keys of the array.</p>
<script>
const fruits = ["Banana", "Orange", "Apple", "Mango"];
const keys = fruits.keys();

let text = "";
for (let x of keys) {
  text += x + "<br>";
}

document.write(text);
</script>

<p>Array.keys() is not supported in Internet Explorer.</p>

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