Array chunk function

array_chunk.js

/*
  chunk array elements
*/

function chunckArray(arr,chunkSize) {

  return arr.map( function(e,i){
      return i%chunkSize===0 ? arr.slice(i,i+chunkSize) : null;
  })
  .filter(function(e){ return e; });

}


console.log('Array chunk')

var chunk_size = 5;
var arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17];





var arrayChunked = chunckArray(arr,4)

console.log(arrayChunked)