i want to know the last object of array in javaScript code example

Example 1: javascipt get last element of array

const arr = [1,2,3] ;
console.log(arr[arr.length - 1]);

Example 2: find last item in an array JS

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