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json对象字符串的javascript数组

json arrays javascript

-3

mamesaye · 技术社区 · 8 年前

我有这个阵列:

data = [
    "Id = 2",
    "time = 10:59",
    "Topic = xxxxxxxxxxxxxxxx",
    "GUEST3",
    "Role = GS",
    "Infos = Connecticut",
    "GUEST4",
    "Role = HS",
    "Infos = Delaware",
    "GUEST5",
    "Role = CS",
    "Infos = Hawaii"
]

如何使其成为如下JSON对象:

data = [   
 {    
    Id : 2,  
    time : 10:5',
    Topic : xxxxxxxxxxxxxxxx,  
    GUEST3:
           {
             Role : GS,
             Infos : Connecticut,
           }
   GUEST4:
           {
            Role : HS,
            Infos : Delaware,  
   GUEST5:
           {
            Role : CS,
            Infos : Hawaii
           }
 }

3 回复 | 直到 8 年前

Andrew Bone 8 年前

这里有一些代码可以做到这一点。

我已经对代码进行了注释,但基本要点是它将查看数组中的每个字符串,然后确定它是键和值还是对象的另一层。

const data = ["Id = 2", "time = 10:59", "Topic = xxxxxxxxxxxxxxxx", "GUEST3", "Role = GS", "Infos = Connecticut", "GUEST4", "Role = HS", "Infos = Delaware", "GUEST5", "Role = CS", "Infos = Hawaii"];

// Declaring new object
let obj = {};
// Place to remember current level of object
let level;

// For every bit of the array
for (let item of data) {
  // If it contains an equals
  if (item.includes('=')) {
    // Split it into two stings
    let split = item.split('=');
    let key = split[0].trim();
    let cont = split[1].trim();
    // If we're already on a lower level like GUEST3 put it in there
    if (level) {
      obj[level][key] = cont
    } else {
      // Or just place the new data at the top level
      obj[key] = cont
    }
  } else {
    // If there's no equals we want to go down a layer
    level = item;
    obj[item] = {};
  }
}

console.log(obj)

如果你很难理解到底发生了什么,我希望这对你有所帮助。请随时发表评论。

编辑:

我把这三个答案混在一起了,你可以做出一个更好的答案。

const data = ["Id = 2", "time = 10:59", "Topic = xxxxxxxxxxxxxxxx", "GUEST3", "Role = GS", "Infos = Connecticut", "GUEST4", "Role = HS", "Infos = Delaware", "GUEST5", "Role = CS", "Infos = Hawaii"]

let aO = o = {};
data.map(a => a.split(' = ')).forEach(e => {e.length > 1 ? aO[e[0]] = e[1] : aO = o[e] = {}});
console.log(o);

Andrew Bone 8 年前

注意:您的输入数组看起来非常不寻常和非标准。如果这确实是您接收数据的方式,那么您可以使用下面的代码来处理它。但是,我建议您进行双重检查,如果可能的话,尝试更改后端(或此数据来自哪里),以提供标准JSON字符串或JavaScript对象。

var data = [
  "Id = 2",
  "time = 10:59",
  "Topic = xxxxxxxxxxxxxxxx",
  "GUEST3",
  "Role = GS",
  "Infos = Connecticut",
  "GUEST4",
  "Role = HS",
  "Infos = Delaware",
  "GUEST5",
  "Role = CS",
  "Infos = Hawaii"
];

var result = {};
var putInto = result;
for (let token of data) {
  if (token.indexOf('=') != -1) {
    let nameValue = token.split('=');
    let name = nameValue[0].trim();
    let value = nameValue[1].trim();
    putInto[name] = value;
  } else {
    let child = {};
    result[token] = child;
    putInto = child;
  }
}

console.log(result)

Luiz Fernando da Silva 8 年前

首先,您需要正确格式化数据。一种方法是将它和数组组合起来。

const str =  ["Id = 2","time = 10:59","Topic = xxxxxxxxxxxxxxxx","GUEST3","Role = GS" ,"Infos = Connecticut","GUEST4","Role = HS","Infos = Delaware","GUEST5","Role = CS","Infos = Hawaii"]

const formatted = str.map(e => e.split('='))

然后你可以使用 _.fromPairs 来自lodash

const obj = _.fromPairs(formatted);

您得到了一个简单的json。这并不完全是你需要的,但你可以从这里开始。