（B站一博主保姆级理解）笛卡尔积生成商品SKU

let skuList=[
    ['大人','小人','好人'],
    ['篮球','足球'],
    ['我的','你的']
]
const getSkuList=(skuList)=>{
    if(skuList.length==0) return [[]]
    const firstArr=skuList.shift()
    const res=[]
    const arrSum=getSkuList(skuList)
    firstArr.map(x=>{
        arrSum.map(y=>{
            res.push([x,...y])
        })
    })
    return res
}
const result=getSkuList(skuList)
console.log('result',result)