js 找出多維數組中的某子級元素

 

 

 

 數組是多維的, 查找最子級的 id

 let data = [
          {
            id: 1,
            supplier: false,
            text: "江蘇",
            childList: [{
              id: 3,
              supplier: false,
              text: "南京",
              childList: [{
                id: 1,
                supplier: true,
                text: "南京機械廠"
              }]
            }],
          },
          {
            id: 4,
            supplier: false,
            text: "山東",
            childList: [{
              id: 3,
              supplier: false,
              text: "濟南",
              childList: [{
                id: 2,
                supplier: true,
                text: "機械廠"
              }]
            }],
          }]


      findSupLink(data,supplierId) {
        //傳入
        var fun = function (i, n) {
          if (i && i.length > 0) {
            for (let v of i) {
              if (v.supplier) {
                return v.id == n ? v.id : false
              } else {
                if (v.childList && v.childList.length > 0) {
                  let re = fun(v.childList, n)
                  if (re) {
                    return v.id + ',' + re
                  }
                }
              }
            }
          }
        }

        let ret = fun(data, supplierId)
        ret = eval(`([${ret}])`)
        console.log(ret)
        return eval(`([${ret}])`)
      }
//調用
this.findSupLink(data,1)

結果: [1, 3,1]