Question

我在发布问题之前搜索stackoverflow，但我找不到任何解决方案。我有一个像这样的对象：

"{"COURRIERS":
     {"05. Juridique":
         [{"res_id":100,"type_label":"Plainte","subject":"test23","doctypes_first_level_label":"COURRIERS","doctypes_second_level_label":"05. Juridique","folder_level":2}]
     }
}"

我需要像数组一样访问它，以获取res_id等信息。

我该怎么做？

提前致谢

Answer 1

假设您在每个图层中都不会有多个对象/数组，这可以满足您的需求。

＆＃13;

let obj = {
  "COURRIERS": {
    "05. Juridique": [{
      "res_id": 100,
      "type_label": "Plainte",
      "subject": "test23",
      "doctypes_first_level_label": "COURRIERS",
      "doctypes_second_level_label": "05. Juridique",
      "folder_level": 2
    }]
  }
}

let folder = Object.keys(obj)[0]
let type = Object.keys(obj[folder])[0]
let result = obj[folder][type][0]

console.log(result)

＆＃13;

Answer 2

那样的东西？

（我在变量中插入数据并用键索引打印想要的结果）

＆＃13;

let obj = {
   "COURRIERS":{
      "05. Juridique":[
         {
            "res_id":100,
            "type_label":"Plainte",
            "subject":"test23",
            "doctypes_first_level_label":"COURRIERS",
            "doctypes_second_level_label":"05. Juridique",
            "folder_level":2
         }
      ]
   }
};

console.log(obj["COURRIERS"]["05. Juridique"][0]["res_id"]);

＆＃13;

修改

你想用变量来访问它。为避免bug，我强烈建议您检查数组/对象中是否存在变量值键，如：

let folder = 'COURRIERS'; if(folder.indexOf(data) >= 0) { // folder.indexOf(data) = 0 // ... finish the job here :) } // indexOf return -1 if the value is not found

Answer 3

您可以通过多种方式访问数据。以下内容将有助于阐明您访问某些数据的一些方法。

myObj.type              = "Dot syntax";
myObj.type              = "Dot syntax";
myObj["date created"]   = "String with space";
myObj[str]              = "String value";
myObj[rand]             = "Random Number";
myObj[obj]              = "Object";
myObj[""]               = "Even an empty string";

对于您的问题，您可以使用以下

var x = { 
 "COURRIERS":{
  "05. Juridique":[
     {
        "res_id":100,
        "type_label":"Plainte",
        "subject":"test23",
        "doctypes_first_level_label":"COURRIERS",
        "doctypes_second_level_label":"05. Juridique",
        "folder_level":2
     }
  ]
}};
console.log(x['COURRIERS']['05. Juridique'][0].res_id)

JAVASCRIPT对象进行数组转换

3 个答案: