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Code:	function array_chunk (input, size, preserve_keys) { // http://jsphp.co/jsphp/fn/view/array_chunk // + original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com) // + improved by: Brett Zamir (http://brett-zamir.me) // % note 1: Important note: Per the ECMAScript specification, objects may not always iterate in a predictable order // * example 1: array_chunk(['Kevin', 'van', 'Zonneveld'], 2); // * returns 1: [['Kevin', 'van'], ['Zonneveld']] // * example 2: array_chunk(['Kevin', 'van', 'Zonneveld'], 2, true); // * returns 2: [{0:'Kevin', 1:'van'}, {2: 'Zonneveld'}] // * example 3: array_chunk({1:'Kevin', 2:'van', 3:'Zonneveld'}, 2); // * returns 3: [['Kevin', 'van'], ['Zonneveld']] // * example 4: array_chunk({1:'Kevin', 2:'van', 3:'Zonneveld'}, 2, true); // * returns 4: [{1: 'Kevin', 2: 'van'}, {3: 'Zonneveld'}] var x, p = '', i = 0, c = -1, l = input.length \|\| 0, n = []; if (size < 1) { return null; } if (Object.prototype.toString.call(input) === '[object Array]') { if (preserve_keys) { while (i < l) { (x = i % size) ? n[c][i] = input[i] : n[++c] = {}, n[c][i] = input[i]; i++; } } else { while (i < l) { (x = i % size) ? n[c][x] = input[i] : n[++c] = [input[i]]; i++; } } } else { if (preserve_keys) { for (p in input) { if (input.hasOwnProperty(p)) { (x = i % size) ? n[c][p] = input[p] : n[++c] = {}, n[c][p] = input[p]; i++; } } } else { for (p in input) { if (input.hasOwnProperty(p)) { (x = i % size) ? n[c][x] = input[p] : n[++c] = [input[p]]; i++; } } } } return n; }
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