使用recurssive添加密钥

Question

我有这个JSON：

{
    "my_obj": [
        {
            "qte": [
                {
                    "qte1": "2",
                    "somthing": "toto"
                },
                {
                    "qte1": "1",
                    "somthing": "tata"
                }
            ]    
        },
        {
            "qte": [
                {
                    "qte1": "77"
                },
                {
                    "somthing": "titi"
                }
            ]    
        }
    ]
}

我需要使用递归或一些函数nodeJs添加所有键“qte1”，这样做得到类似的东西：

{
    "sumQte" : 80

}

祝你好运

Answer 1

有很多方法可以解决你的这个问题。这可能不是最佳的..

const test = {
      "my_obj": [
          {
              "qte": [
                  {
                      "qte1": "2",
                      "somthing": "toto"
                  },
                  {
                      "qte1": "1",
                      "somthing": "tata"
                  }
              ]
          },
          {
              "qte": [
                  {
                      "qte1": "77"
                  },
                  {
                      "somthing": "titi"
                  }
              ]
          }
      ]
  };
  let sum = 0;
  test.my_obj.map(obj => {
    obj.qte.map(obj2 =>{
      if(obj2.qte1 != null){
      sum+=parseInt(obj2.qte1);
      }
    });
  });
  console.log(sum);

Answer 2

.product {
        position:relative;
        width:300px;
        height:200px;
        overflow-x:hidden;
        overflow-y:visible;
  }

Answer 3

您可以使用迭代和递归方法进行一些检查，或者如果找到密钥或者实际数据是对象 - 那么再次调用该函数。

适用于任何深度。

function getSum(object, key) {
    return Object.keys(object).reduce(function (s, k) {
        if (!object[k]) {
            return s;
        }
        if (k === key) {
            return s + +object[k];
        }
        if (typeof object[k] === 'object') {
            return s + getSum(object[k], key);
        }
        return s;
    }, 0);

};

var data = { my_obj: [{ qte: [{ qte1: "2", somthing: "toto" }, { qte1: "1", somthing: "tata" }] }, { qte: [{ qte1: "77" }, { somthing: "titi" }] }] },
    sum = getSum(data, 'qte1');

console.log(sum);