如何循环遍历嵌套对象的数组并移除外部键，并将对象的其余部分留在Nodejs javascript中

Question

我是Javascript和Nodejs的新手，我不知道如何遍历下面的对象数组并删除其数字键。这样，当我提取数组中每个对象的关键帧时，我得到-CCD_ 1。

嵌套对象的数组以这种格式给出

[
{
'0': {
City: 'Kottayam',
'Operator Name': 'GEORGE KUTTY K',
'Operator Id': 1808,
Amount: 3200,
'Transaction Type': 'Received'
},
'1': {
City: 'Kottayam',
'Operator Name': 'SAJI VARGHESE',
'Operator Id': 1723,
Amount: 276.512,
'Transaction Type': 'Received'
},
'2': {
City: 'Kottayam',
'Operator Name': 'SUNEESH K D',
'Operator Id': 1010,
Amount: 600,
'Transaction Type': 'Received'
},
'3': {
City: 'Kottayam',
'Operator Name': 'PRASAD TK',
'Operator Id': 1745,
Amount: 19.8,
'Transaction Type': 'Paid'
}
}
]

我需要每个对象的密钥-['City', 'Operator Name', 'Operator Id', 'Transaction Type']

Answer 1

我想你的意思是——一个对象数组。仔细查看您的数据类型，它是一个无效的数据类型。如果您有大括号｛｝，那么您声明的对象需要一个带值的键。

[
{
City: 'Kottayam',
'Operator Name': 'GEORGE KUTTY K',
'Operator Id': 1808,
Amount: 3200,
'Transaction Type': 'Received'
},
{
City: 'Kottayam',
'Operator Name': 'SAJI VARGHESE',
'Operator Id': 1723,
Amount: 276.512,
'Transaction Type': 'Received'
},
{
City: 'Kottayam',
'Operator Name': 'SUNEESH K D',
'Operator Id': 1010,
Amount: 600,
'Transaction Type': 'Received'
},
{
City: 'Kottayam',
'Operator Name': 'PRASAD TK',
'Operator Id': 1745,
Amount: 19.8,
'Transaction Type': 'Paid'
}
]

对于溶液

let array =
[
{
'0': {
City: 'Kottayam',
'Operator Name': 'GEORGE KUTTY K',
'Operator Id': 1808,
Amount: 3200,
'Transaction Type': 'Received'
},
'1': {
City: 'Kottayam',
'Operator Name': 'SAJI VARGHESE',
'Operator Id': 1723,
Amount: 276.512,
'Transaction Type': 'Received'
},
'2': {
City: 'Kottayam',
'Operator Name': 'SUNEESH K D',
'Operator Id': 1010,
Amount: 600,
'Transaction Type': 'Received'
},
'3': {
City: 'Kottayam',
'Operator Name': 'PRASAD TK',
'Operator Id': 1745,
Amount: 19.8,
'Transaction Type': 'Paid'
}
}
]
console.log(array); //this is your starting array, notice it just has one object in there at index 0
let arrayTransform = []; //this is where we will store our result
for (const [key, value] of Object.entries(array[0])){
console.log(key,value);
arrayTransform.push(value);
}
console.log('array transform looks like', arrayTransform);
//arrayTransform should look like this
//[
//   {
//     City: 'Kottayam',
//     'Operator Name': 'GEORGE KUTTY K',
//     'Operator Id': 1808,
//     Amount: 3200,
//     'Transaction Type': 'Received'
//   },
//   {
//     City: 'Kottayam',
//     'Operator Name': 'SAJI VARGHESE',
//     'Operator Id': 1723,
//     Amount: 276.512,
//     'Transaction Type': 'Received'
//   },
//   {
//     City: 'Kottayam',
//     'Operator Name': 'SUNEESH K D',
//     'Operator Id': 1010,
//     Amount: 600,
//     'Transaction Type': 'Received'
//   },
//   {
//     City: 'Kottayam',
//     'Operator Name': 'PRASAD TK',
//     'Operator Id': 1745,
//     Amount: 19.8,
//     'Transaction Type': 'Paid'
//   }
// ]

Answer 2

我想这就是你想要做的

let oldArr = [
{
'0': {
City: 'Kottayam',
'Operator Name': 'GEORGE KUTTY K',
'Operator Id': 1808,
Amount: 3200,
'Transaction Type': 'Received'
}
},
{'1': {
City: 'Kottayam',
'Operator Name': 'SAJI VARGHESE',
'Operator Id': 1723,
Amount: 276.512,
'Transaction Type': 'Received'
}
},
{'2': {
City: 'Kottayam',
'Operator Name': 'SUNEESH K D',
'Operator Id': 1010,
Amount: 600,
'Transaction Type': 'Received'
}
},
{'3': {
City: 'Kottayam',
'Operator Name': 'PRASAD TK',
'Operator Id': 1745,
Amount: 19.8,
'Transaction Type': 'Paid'
}
}
]
let newArr = [];
oldArr.forEach(obj => newArr.push(...Object.values(obj)))
console.log(newArr)

Answer 3

下面提到的格式是错误的，即使您进行了更正，也没有那么大意义，但我会尽力提供帮助。我所能理解的是，您正在尝试提取给定对象的值。在这里的数组中，您可以使用Object.values()运算符Read here。所以我们可以在这里做两件事，如果你只想要钥匙，你可以做Object.keys()，它会给你这个

Array(4) [ "0", "1", "2", "3" ]

如果你想提取值并将其保持为数组格式，你可以执行Object.values()，这将在这里给你的输出

[{ City: "Kottayam", "Operator Name": "GEORGE KUTTY K", "Operator Id": 1808, … },
​{ City: "Kottayam", "Operator Name": "SAJI VARGHESE", "Operator Id": 1723, … },
{ City: "Kottayam", "Operator Name": "SUNEESH K D", "Operator Id": 1010, … },
{ City: "Kottayam", "Operator Name": "PRASAD TK", "Operator Id": 1745, … }]

如果你想把这些值包装在另一个Object而不是Array中，只需执行const obj={...array}我希望这有帮助，如果它有助于，请将答案标记为正确