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chunk javascript Code Snippet in 2023

arrayintermediate

Last Updated: 1 February 2023

Chunks an array into smaller arrays of a specified size.

  • Use Array.from() to create a new array, that fits the number of chunks that will be produced.
  • 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 chunk = (arr, size) => Array.from({ length: Math.ceil(arr.length / size) }, (v, i) => arr.slice(i * size, i * size + size) );
chunk([1, 2, 3, 4, 5], 2); // [[1, 2], [3, 4], [5]]

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