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Partition an Array in Javascript

At times it’s necessary to partition an array in to equal size chunks. This is a simple JS one-liner that makes it really easy to do.   Array(Math.ceil(a.length / size)).fill(0).map((_,i) => a.slice(i * size, (i+1) * size));   Example Usage:   const a = [1,2,3,4,5,6,7,8,9]; function partition(a,size){ return Array(Math.ceil(a.length / size)).fill(0).map((_,i) => a.slice(i * size, (i+1) * size)); } Array(9).fill(0).map((_,i)… Read more →