An Easy Solution for Array Methods in JavaScript

Common Array Methods

• push() — adds an element to the end of the array.
• pop() — removes the last element.
• shift() — removes the first element.
• unshift() — adds an element to the beginning.
• slice(start, end) — returns a shallow copy of a portion of the array.
• splice() — adds/removes elements at any position.
• indexOf() — finds the position of an element.
• join() — combines all elements into a string.

let arr = [1, 2, 3];
arr.push(4);      // [1, 2, 3, 4]
arr.pop();        // [1, 2, 3]
console.log(arr.join("-")); // "1-2-3"