匹配数组值并创建最终数组 - Javascript

问题描述

我有以下数组。第一个对象是原始数据。数组内部是更改后的值。我试图通过与内部数组的 Name 字段匹配来创建最终数据。应该看起来像

var a = 
[
  {"Id":"1","Test":"Name1","Name":"hunt9988ggggggggggggdfsf1111"},{"Id":"2","Test":"Name2","Name":"hunt9988ggggggggggggdfsf"},[
    **{"Name":"hunt9988ggggggggggggdfsf1118","Id":"1"},// Changed value
    {"Name":"hunt9988ggggggggggggdfsf1118","Id":"2"}**
  ]
]

最终数据

var a = 
[
  {"Id":"1","Name":"hunt9988ggggggggggggdfsf1118"},"Name":"hunt9988ggggggggggggdfsf1118"}
]

我正在尝试使用以下代码

var result = a.map(item => ({ value: item.Id,text: item.Name}));
console.log(result)

解决方法

喜欢吗？

注意我修改了原始数组

let a = [{
    "Id": "1","Test": "Name1","Name": "hunt9988ggggggggggggdfsf1111"
  },{
    "Id": "2","Test": "Name2","Name": "hunt9988ggggggggggggdfsf"
  },[{
      "Name": "hunt9988ggggggggggggdfsf1118","Id": "1"
    },// Changed value
    {
      "Name": "hunt9988ggggggggggggdfsf1118","Id": "2"
    }
  ]
]
const replaceArray = a.find(item => Array.isArray(item))
replaceArray.forEach(item => a.find(aItem => aItem.Id === item.Id).Name=item.Name)
a = a.filter(item => item.Id)
console.log(a)

,

您可以按如下方式使用 .map：

const a = [
  {"Id":"1","Test":"Name1","Name":"hunt9988ggggggggggggdfsf1111"},{"Id":"2","Test":"Name2","Name":"hunt9988ggggggggggggdfsf"},[
    {"Name":"hunt9988ggggggggggggdfsf1118","Id":"1"},{"Name":"hunt9988ggggggggggggdfsf1118","Id":"2"}
  ]
];

const _updateArrElements = (arr=[]) => {
  // get items and updates values
  const items = [...arr];
  const updates = items.pop();
  if(!(updates instanceof Array)) return arr;
  // update items with the new values
  return items.map(elem => {
    const obj = updates.find(e => e.Id===elem.Id) || {};
    return {...elem,...obj};
  });
}

console.log( _updateArrElements(a) );