get last element of array javascript

                                    arr.slice(-1)[0] 

                                    // Method - 1 ([] operator)
const arr = [5, 3, 2, 7, 8];
const last = arr[arr.length - 1];
console.log(last);
/*
    Output: 8
*/

// Method - 2 (Destructuring Assignment)
const arr = [5, 3, 2, 7, 8];

                                    var numbers = ["one", "two", "three"];
var lastnumber = numbers[numbers.length - 1];
console.log(lastnumber);

                                    var languages = ["JS", "PHP", "JAVA"]
var lastElement = languages[languages.length - 1]
console.log(lastElement)

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

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

                                    let colors = ["red", "yellow", "green"];
let lastELement = colors[colors.length - 1]