const chunkedArray = (inputArray, chunkSize) => { let finalArr=[]; let increment=chunkSize; for(let i=0; i<inputArray.length; i++){ finalArr.push(inputArray.slice(i,chunkSize)) i=chunkSize-1; chunkSize+=increment; } return finalArr; } console.log(chunkedArray([1,2,3,4,5,6,7,8,9,10], 3))