javascript - 如何使用 forEach 循环在 Javascript 中迭代索引

Question

我正在尝试迭代这个对象。我已经通过互联网检查了代码，发现 Object.enteries 可以工作，但到目前为止它只返回第一个 CustomerName，即“Asad”。我想将它迭代到完整的数组，而不仅仅是第一个。

var myObject = {
        "records": [
            {
                "id": "recDBqsW7C3Dk3HMd",
                "fields": {
                    "Latitude": "24.898907",
                    "Longitude": "67.117303",
                    "CustomerName": "Asad"
                },
                "createdTime": "2020-10-07T04:43:31.000Z"
            },
            {
                "id": "recGlfTbUcEvP46Lf",
                "fields": {
                    "Latitude": "24.907641",
                    "Longitude": "67.1088035",
                    "CustomerName": "Umar"
                },
                "createdTime": "2020-10-07T04:44:11.000Z"
            },
            {
                "id": "recfsQsoznDyWPDe8",
                "fields": {
                    "Latitude": "24.911112",
                    "Longitude": "67.105117",
                    "CustomerName": "Ali"
                },
                "createdTime": "2020-10-06T09:11:05.000Z"
            }
        ]
    };
    
    
    Object.entries(myObject).forEach(([key, value], index) => {
      console.log( value[index].fields.CustomerName); // key ,value
    });

结果:

"Asad"

Answer 1

该数组实际上是您定义它的对象字面量的一个属性。您需要做的就是访问该数组并调用 Array.prototype.forEach以访问它的元素。像这样的东西:

//Extract the array from your data structure into a variable. Always use 
//a const if the variable will not need to be re-assigned in the program.
const {
  records
} = {
  "records": [{
      "id": "recDBqsW7C3Dk3HMd",
      "fields": {
        "Latitude": "24.898907",
        "Longitude": "67.117303",
        "CustomerName": "Asad"
      },
      "createdTime": "2020-10-07T04:43:31.000Z"
    },
    {
      "id": "recGlfTbUcEvP46Lf",
      "fields": {
        "Latitude": "24.907641",
        "Longitude": "67.1088035",
        "CustomerName": "Umar"
      },
      "createdTime": "2020-10-07T04:44:11.000Z"
    },
    {
      "id": "recfsQsoznDyWPDe8",
      "fields": {
        "Latitude": "24.911112",
        "Longitude": "67.105117",
        "CustomerName": "Ali"
      },
      "createdTime": "2020-10-06T09:11:05.000Z"
    }
  ]
};

//Iterate over the items in the array to access the data you need
records.forEach(record => {
  console.log(`${record.id} = ${record.fields.CustomerName}`);
});