how to detect the end of an array in javascript code example

Example 1: 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")

Example 2: js detect end of array

var group = ["a","b","c","d"];
var groupLength = group.length;

for(var i = 0;i < groupLength;i++){
    var item = group[i];

    // Do something if is the last iteration of the array
    if((i + 1) == (groupLength)){
        console.log("Last iteration with item : " + item);
    }
}

Example 3: js detect end of array

var group = ["a","b","c","d"];
var groupLength = group.length;

while (groupLength--) {
    var item = group[groupLength];

    if(groupLength == 0){
        console.log("Last iteration with item : " + item);
    }
}