Offset array elements
Moves the specified amount of elements to the end of the array.
- Use
Array.prototype.slice()twice to get the elements after the specified index and the elements before that. - Use the spread operator (
...) to combine the two into one array. - If
offsetis negative, the elements will be moved from end to start.
const offset = (arr, offset) => [...arr.slice(offset), ...arr.slice(0, offset)]; offset([1, 2, 3, 4, 5], 2); // [3, 4, 5, 1, 2] offset([1, 2, 3, 4, 5], -2); // [4, 5, 1, 2, 3]
