How to reverse an array in JavaScript

To reverse an array in JavaScript, clone it with concat and then reverse the clone with reverse.

const myArray = [1, 2, 3];
const reversed = myArray.concat().reverse();

console.log(reversed);
// => [3, 2, 1]

If you want to reverse the array in place, don't call concat.

const myArray = [1, 2, 3];
myArray.reverse();

console.log(myArray);
// => [3, 2, 1]

That's it!

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