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<html><body><h2>JavaScript Arrays</h2><p>The prototype constructor allows you to add new properties or methods to the Array() object.</p><p id="demo"></p><script>// Add a new methodArray.prototype.myUcase = function() { for (let i = 0; i < this.length; i++) { this[i] = this[i].toUpperCase(); }};// Use the method on any arrayconst fruits = ["Banana", "Orange", "Apple", "Mango"];fruits.myUcase();document.getElementById("demo").innerHTML = fruits;</script></body></html>