get the last index value in js code example

Example 1: javascript get last element of array

var colors = ["red","blue","green"];
var green = colors[colors.length - 1];//get last item in the array

Example 2: find last item in an array JS

if (loc_array[loc_array.length - 1] === 'index.html') {
   // do something
} else {
   // something else
}