how to get the end of an array javascript

let arr = [1, 2, 3, 4, 5, 6, 7, 8];
let last = arr.pop();

console.log(last);
//8


console.log("https://discord.gg/5yjWgMS")if (loc_array[loc_array.length - 1] === 'index.html') {
   // do something
} else {
   // something else
}