数组排列数据 sku规格组合

排列组合函数 可用于SKU组合

let a = [
    [
        {
            "id": 3911,
            "val": "白色",
            "key": "颜色",
        },
        {
            "id": 3912,
            "val": "蓝色",
            "key": "颜色",
        }
    ],
    [
        {
            "id": 3924,
            "val": "36",
            "key": "尺码",
        },
        {
            "id": 3925,
            "val": "37",
            "key": "尺码",
        }
    ],
    [
        {
            "id": 3924,
            "val": "一",
            "key": "类型",
        },
        {
            "id": 3925,
            "val": "二",
            "key": "类型",
        }
    ]
]

const helperFun = function (...chunks) {
  let res = []
  let helper = function (chunkIndex, prev) {
    let chunk = chunks[chunkIndex]
    let isLast = chunkIndex === chunks.length - 1
    for (let val of chunk) {
      let cur = prev.concat(val)
        
      console.log('9999',cur)
      if (isLast) {
        res.push(cur)
      } else {
        helper(chunkIndex + 1, cur)
      }
    }
  }
  helper(0, [])
  return res
}
let data = helperFun(...a);
console.log('---11',data)


//排列组合函数 可用于SKU