Return array in JavaScript - ECMAScript 2021

To return an array in JavaScript - ECMAScript 2021, you can simply declare and return an array from a function:

Example 1:

function returnArray() {
   return [1, 2, 3, 4, 5];
}
console.log(returnArray()); // Output: [1, 2, 3, 4, 5]

In the above example, the function returnArray() returns an array [1, 2, 3, 4, 5].

Example 2:

You can also use an arrow function to return an array:

const returnArray = () => [1, 2, 3, 4, 5];
console.log(returnArray()); // Output: [1, 2, 3, 4, 5]

In the above example, the arrow function returnArray returns an array [1, 2, 3, 4, 5].

Example 3:

You can also create an array by using the new keyword and the Array() constructor:

function returnArray() {
   return new Array(1, 2, 3, 4, 5);
}
console.log(returnArray()); // Output: [1, 2, 3, 4, 5]

In the above example, the function returnArray() returns an array [1, 2, 3, 4, 5] created using the Array() constructor.

Example 4:

You can also use the spread operator (...) to return an array:

function returnArray() {
   const arr = [1, 2, 3, 4, 5];
   return [...arr];
}
console.log(returnArray()); // Output: [1, 2, 3, 4, 5]

In the above example, the function returnArray() first creates an array [1, 2, 3, 4, 5], then spreads it using the spread operator (...), and finally returns the spread array.