let names = ["iPhone X", "iPhone XS"];
let colors = ["黑色", "白色"];
let storages = ["64g", "256g"];
let combine = function (...chunks) {
let res = [];
let helper = function (chunkIndex, prev) {
let chunk = chunks[chunkIndex];
let isLast = chunkIndex === chunks.length - 1;
for (let val of chunk) {
console.log("111")
console.log(prev)
let cur = prev.concat(val);
if (isLast) {
// 如果已经处理到数组的最后一项了 则把拼接的结果放入返回值中
res.push(cur)
console.log(res)
} else { helper(chunkIndex + 1, cur) }
}
} // 从属性数组下标为 0 开始处理 // 并且此时的 prev 是个空数组
helper(0, [])
return res
}
console.log(combine(names, colors, storages))
console