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chunkIntoN javascript Code Snippet in 2022

arrayintermediate

Last Updated: 26 November 2022

Chunks an array into n smaller arrays.

  • Use Math.ceil() and Array.prototype.length to get the size of each chunk.
  • Use Array.from() to create a new array of size n.
  • Use Array.prototype.slice() to map each element of the new array to a chunk the length of size.
  • If the original array can't be split evenly, the final chunk will contain the remaining elements.
const chunkIntoN = (arr, n) => { const size = Math.ceil(arr.length / n); return Array.from({ length: n }, (v, i) => arr.slice(i * size, i * size + size) ); }
chunkIntoN([1, 2, 3, 4, 5, 6, 7], 4); // [[1, 2], [3, 4], [5, 6], [7]]

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