javascript split array into chuncks of
function splitArrayIntoChunksOfLen(arr, len) { var chunks = [], i = 0, n = arr.length; while (i < n) { chunks.push(arr.slice(i, i += len)); } return chunks; } var alphabet=['a','b','c','d','e','f']; var alphabetPairs=splitArrayIntoChunksOfLen(alphabet,2); //split into chunks of two