js将扁平化json变成树状结构

Question

     我需要转成如下格式
       {
           student:{
             name:"张三",
             age:18,
             feature:{
                weight:80,
                hegiht:168
             }
          }
       }

 // 原数据格式
  var result={
    "student.name":"张三",
    "student.age":18,
    "student.feature.weight":80,
    "student.feature.height":168
  }

Answer 1

基于您的问题，我给了如下的解决方式，稍微有点繁琐，可供参考，需要借助loadsh的深度对象拷贝方法，如果自己写也行（这个深度拷贝方法），代码如下。

1. loadsh的引入https://cdn.bootcdn.net/ajax/libs/lodash.js/4.17.21/lodash.min.js(%E4%B8%BA%E4%BA%86%E4%BD%BF%E7%94%A8%E6%B7%B1%E5%BA%A6%E6%8B%B7%E8%B4%9D%E6%96%B9%E6%B3%95%EF%BC%8C%E5%8F%AF%E4%BB%A5%E8%87%AA%E5%B7%B1%E5%86%99%EF%BC%8C%E4%B8%8D%E9%9C%80%E8%A6%81%E5%BC%95%E5%85%A5%E6%96%B9%E6%B3%95%E4%B9%9F%E8%A1%8C)
2. // 原数据格式
   const result = {
   "title": "asfff",
   "student.name": "张三",
   "student.age": 18,
   "student.feature.weight": 80,
   "student.feature.height": 168,
   "student.highSchool.1": 20,
   "student.highSchool.3": 80
   };
   代码：
   let obj = {},
   stObj = [];
   const objectReverseTree = (data) => {
   let retData = Object.entries(data);
   for (let i = 0, len = retData.length; i < len; i++) {
   const item = retData[i];
   let first = item[0].split(".");
   if (first.length === 1) {

    obj[first] = item[1];
   

   } else {

    let ss = first.reduceRight((pre, next) => ({
      [next]: pre
    }), item[1]);
    stObj.push(ss);
   

   }
   }
   const newObj = _.defaultsDeep(obj, ...stObj);
   console.log(newObj, '-------stObj----')
   return newObj;
   };

objectReverseTree(result);
//

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