<html><body><p id="demo">Click the button to display the last position of the element "Apple", starting the search at position 4:</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var fruits=["Banana","Orange","Apple","Mango","Banana","Orange","Apple","Mango"];var a=fruits.lastIndexOf("Apple",4)var x=document.getElementById("demo");x.innerHTML=a;}</script><p><b>Note:</b>The lastIndexOf method was introduced in JavaScript 1.6, and does not work in Internet Explorer 8 and earlier.</p></body></html>