如何从 Angular 中的 JSON 数据中提取特定密钥？答案

【问题标题】：How to extract a specific key from the JSON data in Angular?如何从 Angular 中的 JSON 数据中提取特定密钥？
【发布时间】：2017-07-13 15:23:16
【问题描述】：

我有以下 JSON，我想提取唯一的位置并将其放入另一个 JSON 或数组中，格式与以前相同。我是新手，所以有点困惑。

这就是我所拥有的：

let data = {
    "Person"  : [{"name":"harman","comment_count":255},
                 {"name":"aman","comment_count":66},
                 {"name":"mukesh","comment_count":66}],
    "location": [{"name":"delhi","comment_count":255},
                 {"name":"mumbai","comment_count":66},
                 {"name":"chandigarh","comment_count":66}],
    "org     ": [{"name":"dell","comment_count":255},
                 {"name":"apple","comment_count":66},
                 {"name":"hp","comment_count":66}],
    "teams"  :  [{"name":"Real","comment_count":255},
                 {"name":"Juve","comment_count":66},
                 {"name":"Liverpool","comment_count":66}]        
};

这就是我想要的：

data2 = {
   "location": [
        {"name":"delhi","comment_count":255},
        {"name":"mumbai","comment_count":66},
        {"name":"chandigarh","comment_count":66}]       
};

【问题讨论】：

data2.location = data.location;

标签： javascript html angularjs arrays json

【解决方案1】：

在下面包含一个 sn-p。只需使用var data2 = data.location; 祝你好运

  
  window.onload = function(){
  
      let data = {
                        "Person"  : [{"name":"harman","comment_count":255},
                                    {"name":"aman","comment_count":66},
                                    {"name":"mukesh","comment_count":66}],
                        "location": [{"name":"delhi","comment_count":255},
                                    {"name":"mumbai","comment_count":66},
                                    {"name":"chandigarh","comment_count":66}],
                        "org     ": [{"name":"dell","comment_count":255},
                                     {"name":"apple","comment_count":66},
                                     {"name":"hp","comment_count":66}],
                        "teams"  : [{"name":"Real","comment_count":255},
                                    {"name":"Juve","comment_count":66},
                                    {"name":"Liverpool","comment_count":66}]        
        };
        
       var data2 = data.location;
       console.log("data2:");
       console.log(data2);
  
  };

【讨论】：

【解决方案2】：

这样做。

data2 = data.location

【讨论】：