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<!DOCTYPE html> <html> <body> <h1>JavaScript Arrays</h1> <h2>The keys() Method</h2> <p>keys() returns an Array Iterator object with the keys of an array:</p> <p id="demo"></p> <script> const fruits = ["Banana", "Orange", "Apple", "Mango"]; const keys = fruits.keys(); let text = ""; for (let x of keys) { text += x + "<br>"; } document.getElementById("demo").innerHTML = text; </script> <p>keys() is not supported in Internet Explorer 11 (or earlier).</p> </body> <!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_keys by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:39:06 GMT --> </html>
