Common Array Methods

JavaScript arrays come with many useful built-in methods:

• push() – Add item to end
• pop() – Remove last item
• shift() – Remove first item
• unshift() – Add item to beginning
• slice() – Extract portion
• splice() – Modify contents

const nums = [1, 2, 3, 4];
nums.push(5); // [1,2,3,4,5]
nums.splice(1, 2); // [1,4,5]