将数组转换为对象类型

Posted 2023-05-09

【中文标题】将数组转换为对象类型

【英文标题】：Convert an Array into object type

【发布时间】：2021-09-09 22:18:39

【问题描述】：

我想用键值对将数组转换为对象到特定对象。

[
    
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    
        "key": "notify.me",
        "value": "You'll receive an email"
    ,
]

需要输出：

    labels :
        "out.of.stock" : "out of stock",
        "buy.now" : "BUY NOW",
        "notify.me": "You'll receive an email"
        

我尝试使用 loadash (keyBy) 但输出如下：

   "out.of.stock": 
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    "buy.now":
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    "notify.me": 
        "key": "notify.me",
        "value": "You'll receive an email"
    ,

【问题讨论】：

使用Array.reduce,

@Nur 这是错误的，他想通过labels下配对

@Nur 这就是为什么你给所有答案一个minus 因为你的想法不同？ ??????

这里重复了。 ***.com/q/42974735/14032355

【参考方案1】：

const data = [
  
    "key": "out.of.stock",
    "value": "out of stock"
  ,
  
    "key": "buy.now",
    "value": "BUY NOW"
  ,
  
    "key": "notify.me",
    "value": "You'll receive an email"
  ,
]

const result = data.reduce((acc, next) =>  
  acc.labels[next.key] = next.value
  return acc
,  labels:  )

console.log(result)

【讨论】：

minus ?‍♂️ 怎么样

【参考方案2】：

一个简单的就可以了。

    var obj = labels:;
    arr.forEach(e => 
      obj.labels[e.key] = e.value;
    );

var arr = [
    
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    
        "key": "notify.me",
        "value": "You'll receive an email"
    ,
];

var obj = labels:;
arr.forEach(e => 
  obj.labels[e.key] = e.value;
);

console.log(obj);

【参考方案3】：

let a=data.map((x)=>
   let obj=
   obj[x.key]=x.value
   return obj
)

你可以先用map函数，再用keyby

【参考方案4】：

我会做Object.fromEntries(data.map((key, value) => [key, value]))

const data = [
    
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    
        "key": "notify.me",
        "value": "You'll receive an email"
    ,
]

console.log(
    Object.fromEntries(data.map((key, value) => [key, value]))
)

【参考方案5】：

我建议使用forEach() 方法，该方法将为每个数组元素执行一次提供的函数。在该函数中，您将通过在标签属性对象下应用具有相关值的键来为新对象分配。

const data = [
    
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    
        "key": "notify.me",
        "value": "You'll receive an email"
    ,
];

let obj = "labels" :;
data.forEach(x => obj.labels[x.key] = x.value);

console.log(obj);

【参考方案6】：

const data = [
    
      key: "out.of.stock",
      value: "out of stock",
    ,
    
      key: "buy.now",
      value: "BUY NOW",
    ,
    
      key: "notify.me",
      value: "You'll receive an email",
    ,
  ];

  const obj =  label:  ;

  Object.values(data).map(( key, value ) => 
    return (obj.label[key] = value);
  );


console.log(obj)

【参考方案7】：

假设数组中的键/值顺序，试试Object.fromEntries(data.map(Object.values))

const data = [
    
        "key": "out.of.stock",
        "value": "out of stock"
    ,
    
        "key": "buy.now",
        "value": "BUY NOW"
    ,
    
        "key": "notify.me",
        "value": "You'll receive an email"
    ,
]

const labels = Object.fromEntries(data.map(Object.values));

console.log( labels )