how to get last index value from an array code example

Example 1: find last item in an array JS

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

Example 2: how to find last element in array

int [] y={1,2,3,4,5};
int c=(n.length-1);