数组分割

//大数组分割成小数组
 function sliceArr(array, size) {
                 var result = [];
                 for (var x = 0; x < Math.ceil(array.length / size); x++) {
                     var start = x * size;
                     var end = start + size;
                     result.push(array.slice(start, end));
                 }
                 return result;
             }