JAVASCRIPT

Javascript remove last element

let arr = [10,20,30,40,50];
arr.pop();
console.log(arr); // => [10,20,30,40]

remove last tag in dom javascript

<ul id="menu">
    <li>Home</li>
    <li>Products</li>
    <li>About Us</li>
</ul>
let menu = document.getElementById('menu');
menu.removeChild(menu.lastElementChild);