Question

我有jsonArray如下

JSONArray childern as

 [{"id":2,"label":"w","remoId":135},
  {"id":3,"childern":null,"loc":146,"label":"Loc-w"},
  {"id":4,"childern":null,"loc":147,"label":"Loc-newjk"}
 ]

我想将id = 3的JSONObject的childern键更改为childernArray，其中

  childernArray is  [{"id":6,"label":"w"},{"id":7,"label":"w"}]

我想要关注输出

[{"id":2,"label":"w","remoId":135},
 {"id":3,
        "childern":[{"id":6,"label":"w"},
                    {"id":7,"label":"w"}],
         "loc":146,"label":"Loc-w"},
 {"id":4,"childern":null,"loc":147,"label":"Loc-newjk"}]

我该怎么做？

Answer 1

使用Array.prototype.reduce（） - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce

jsonArray.reduce(function(previousValue, currentValue, index, array) {
  if(currentValue.id == 3) {
    currentValue.children = childrenArray;
  }
  previousValue.push(currentValue);
  return previousValue;
}, []);

在jsonArray中更改JSONObject中的数据

1 个答案: