get the last number of index in array [JavaScript]

Question

How can I get the last index number in an array?

var narr= new Array("test1","test2");

I want to print test2 index number.

Answer 1

narr[narr.length-1]

get last item

narr.length-1

last index

Answer 2

var lastIndexNumber = narr.length - 1;

Answer 3

index number for last item = narr.length-1

Answer 4

Using length property of array, you can get that

var narr= new Array("test1","test2");
var lElementIndex = narr.length -1, lElement = narr[lElementIndex];

console.log('Last Element -' , lElement)
console.log('Last Element Index - ' , lElementIndex)