Nodejs Array Chunk chunks(chunks)

Method Source Code

Array.prototype.chunks = function(chunks) {
  'use strict';//from   ww w  .j  a va2 s.  c o  m

  if (this.length === 0 || chunks === 1) {
    return this;
  }

  var result = [];

  var itemsPerChunk = parseInt(this.length / chunks, null);
  if ((itemsPerChunk * chunks) < this.length) {
    itemsPerChunk++;
  }

  result[0] = this.splice(0, itemsPerChunk);

  var chunksRemaining = chunks - 1;
  if (this.length % chunksRemaining === 0) {
    itemsPerChunk = this.length / chunksRemaining;
  }

  for (var chunk = 1 ; chunk <= chunksRemaining ; chunk++) {
    result[chunk] = this.splice(0, itemsPerChunk);
  }

  return result;
};

Related

1. chunk(chunkSize)

   Array.prototype.chunk = function(chunkSize) {
     var array = this;
     return [].concat.apply([],
       array.map(function(elem,i) {
           return i%chunkSize ? [] : [array.slice(i,i+chunkSize)];
       })
     );
   };
   

2. chunk(chunkSize)

   var fs = require('fs');
   var argv = require('argv');
   var _ = require('underscore');
   var arg = argv.run().targets;
   var num = parseInt(arg[0]);
   Array.prototype.chunk = function(chunkSize) {
     var results = [];
     for (var i=0; i<this.length; i+=chunkSize)
       results.push(this.slice(i,i+chunkSize));
   ...
   

3. chunk(n)

   Array.prototype.chunk(n) {
       var len = this.length,out = [], i = 0;
       while (i < len) {
           var size = Math.ceil((len - i) / n--);
           out.push(this.slice(i, i += size));
       return out;
   

4. chunk(size)

   Array.prototype.chunk = function(size) {
     var chunks = [];
     for (key = 0; key < this.length; key += size) {
       chunks.push(this.slice(key, key+size));
     return chunks;
   

5. chunk(size)

   import Vue from 'vue';
   Array.prototype.chunk = function(size) {
       let sets = [],
           a = [...this],
           chunk = a.length / size;
       while (sets.length < chunk) {
           sets[sets.length] = a.splice(0, size);
       return sets;
   ...