如何在打字稿中的对象中动态获取id值答案

【问题标题】：How to get id value dynamically in an object in typescript如何在打字稿中的对象中动态获取id值
【发布时间】：2020-11-12 03:53:50
【问题描述】：

我有一个关于如何在 typescript 的对象中动态获取 id 值的问题。我可以举个例子：

输入对象如下所示：


station = {
  id: "123123",
  address: {
    id: "asdfasd",
    type: "street"
    value: "asdfas"
  },
  station: {
    id: "asdsdfsdfasd",
    type: "trainstation"
    value: "asdfsdfsas"
  },
  information: {
    id: "asdsdfsdfasd",
    school: {
      id: "asdsdsdsfsdfasd",
      type: "middleschool"
      value: "asdfssdsddfsas"
    }
  }
}

如何动态获取父id，如果我给一个参数如“shool”，那么我可以得到信息的id？

任何解决方案

【问题讨论】：

标签： json angularjs typescript

【解决方案1】：

这是您要找的吗：

const station = {"id":"123123","address":{"id":"asdfasd","type":"street","value":"asdfas"},"station":{"id":"asdsdfsdfasd","type":"trainstation","value":"asdfsdfsas"},"information":{"id":"asdsdfsdfasd","school":{"id":"asdsdsdsfsdfasd","type":"middleschool","value":"asdfssdsddfsas"}}};


function getId(obj, key){
let id;
Object.keys(obj, key).forEach(x=>{
if(x == key){
 id = obj[x].id; return id;
}
else{
if(typeof(obj[x]) == 'object'){ id = getId(obj[x], key)};
}
});
return id;
};

console.log(getId(station, 'school'));

【讨论】：