将数据推送到数组索引中。反应本机 JSX

Question

我正在尝试比较、查找和推送数组中的数据。但是出现以下错误

Error => TypeError: undefined is not an object (evaluating 'data[index].push')

我关注JSON/Array

[
  {
     "category":"Super",
     "id":"1",
     "images":[],
     "status":"open",
     "url":"some url here"
  },
  {
     "category":"Pizza",
     "entitlement_id":"pizza_pack_ent",
     "id":"2",
     "images":[],
     "package_id":"pizza_pack_single",
     "status":"locked",
     "url":"some url here"
  }
]

我想将 packages 对象推送到匹配类别中，因此 json/array 将如下所示

[
  {
     "category":"Super",
     "id":"1",
     "images":[],
     "status":"open",
     "url":"some url here"
  },
  {
     "category":"Pizza",
     "entitlement_id":"pizza_pack_ent",
     "id":"2",
     "images":[],
     "package_id":"pizza_pack_single",
     "status":"locked",
     "url":"some url here",
     "packages": [
         {
           "id":"abcds"
         },
         {
            "id": "xyz"
         }
      ]
  }
]

以下是我尝试执行的代码：

data.forEach((category, index) => { //data is main json/array in which I want to push packages
       packages.forEach((pckg, idx) => {
            if(pckg.identifier === category.package_id){
              // data[category].push(pckg); //not worked
              data[index].push(pckg); //not worked either
            }
                
        })
 })
 console.log(data);

Answer 1

我不知道你的 packages 数组是什么样的，但这应该会给你预期的结果：

data.forEach((category, index) => { //data is main json/array in which I want to push packages
       packages.forEach((pckg, idx) => {
            if(category.package_id  && pckg.identifier === category.package_id){
              if (!category.packages) {
                  category.packages = [];
              }
                category.packages.push(pckg)
            }
                
        })
 })

Answer 2

var packages = [
         {
           "id":"abcds"
         },
         {
            "id": "xyz"
         }
      ]
var categoryList = [
  {
     "category":"Super",
     "id":"1",
     "images":[],
     "status":"open",
     "url":"some url here"
  },
  {
     "category":"Pizza",
     "entitlement_id":"pizza_pack_ent",
     "id":"2",
     "images":[],
     "package_id":"pizza_pack_single",
     "status":"locked",
     "url":"some url here"
  }
]
categoryList.forEach(x=>x.packages=[...packages]);

将数据推送到数组索引中。反应本机 JSX

Push data inside an array index. React Native JSX

javascript

jsx

reactjs

react-native