Split's an array into array's of n length

splitArray.js

    /**
     *
     * Split the array into arrays of n each,
     * e.g. if n is 2 [1,2,3,4,5,6] becomes [[1,2], [3,4], [5,6]
     *
     * @param inputArr - Array
     * @param n - Number
     */
    function splitBy(inputArr, n) {
      var result = [];
      var innerArr = [];
      inputArr.forEach(function(item, idx) {
        innerArr.push(item);
        if (idx === 0) {
          return;
        }
        if ((idx+1) % n === 0) {
          result.push(innerArr);
          innerArr = [];
        }
      });
      if (innerArr.length > 0) {
        result.push(innerArr);
      }
      return result;
    }