element級聯選擇器獲取對象值

級聯選擇器獲取對象值
 console.log('開始取數據');
        let i = 0;
        let data = [];
        let current = undefined;
        val.forEach(v => {
            if (i === 0) {
              current = this.bmjjs.find(item => item.id === v);
              data.push(current)
            } else {
              current = current.children.find(item => item.id === v);
              data.push(current)
            }
            i += 1
          }
        );
console.log(data)