javascript - 将两个嵌套的 json 对象与 javascript 结合起来，并用一个键循环遍历它

Question

我有几个 json 对象(obj1、obj2...)，每个都取自 .txt 文件:

{
  "countries": [
    {
      "Country name": "China",
      "Flag": "CN",
      "Population": 1395380000,
      "undefined": "#688144"
    }, ... ]}

和

{
  "countries": [
    {
      "Country name": "India",
      "Flag": "IN",
      "Population": 1338677000,
      "undefined": "#B78A31"
    }, ...]}

等等。现在我想像这样组合它们:

{
  "countries": [
    {
      "Country name": "China",
      "Flag": "CN",
      "Population": 1395380000,
      "undefined": "#688144"
    },
 {
      "Country name": "India",
      "Flag": "IN",
      "Population": 1338677000,
      "undefined": "#B78A31"
    },
 ... ]}

所以我可以像这样遍历数据:

let obj1 = {}; //saved Data From Txt1;
let obj2 = {}; //saved Data From Txt2
...
let obj = combined?

for (var key in obj.countries) {
var num1 = obj.countries[key].Population+popholder;
if (target >= popholder && target <= num1) {
  var country = obj.countries[key]['Country name'];
  var testas = document.getElementById("countryname")
}}

我怎样才能做到这一点？

Answer 1

只需连接数组:

const obj1 = {
    "countries": [{
            "Country name": "China",
            "Flag": "CN",
            "Population": 1395380000,
            "undefined": "#688144"
        }
    ]
};

const obj2 = {
    "countries": [{
            "Country name": "India",
            "Flag": "IN",
            "Population": 1338677000,
            "undefined": "#B78A31"
        }
    ]
};

const result = {
    countries: [...obj1.countries, ...obj2.countries]
};

console.log(result);