Spread operator

 Spread operator

The spread operator is a new feature in JavaScript that allows you to spread out an array or object into individual elements. It's often used to create copies of arrays or objects, or to concatenate arrays. Here's an example:

const arr1 = [1, 2, 3];

const arr2 = [4, 5, 6];

const combined = [...arr1, ...arr2];

console.log(combined); // Output: [1, 2, 3, 4, 5, 6]

In the code above, the spread operator is used to combine two arrays, arr1 and arr2, into a single array, combined.