js小方法积累，将一个数组按照n个一份，分成若干数组

// 把一个数组按照一定长度分割成若干数组
function group(array, subGroupLength) {
    let index = 0;
    let newArray = [];
    while(index < array.length) {
        newArray.push(array.slice(index, index += subGroupLength));
    }
    return newArray;
}

let numberArray = [1,2,3,4,5,6,7,8,9,10,11,12];;
let groupedArray = group(numberArray, 5);
console.log(groupedArray);