如何删除 JSON 类型的所有属性 [重复]答案

【问题标题】：How to delete all properties of a type JSON [duplicate]如何删除 JSON 类型的所有属性 [重复]
【发布时间】：2021-12-03 19:44:23
【问题描述】：

我的代码中有以下对象。

    [
{
"Name": "John Johnsson",
"Adress": "Linkoping",
"Id": 0,
"Age": "43",
"Role": "Software Engineer"
},
{
"Name": "Marcus Svensson",
"Adress": "Norrköping",
"Age": "26",
"Id": 1,
"Role": "Project Manager"
},
{
"Age": "25",
"Name": "Trevor McNoah",
"Id": 2,
"Adress": "Stockholm",
"Role": "CTO"
}
]

如何最好地删除所有“地址”字段？所以我最终得到以下结果。我一直在努力寻找这个基本问题的答案。

[
{
"Name": "John Johnsson",
"Id": 0,
"Age": "43",
"Role": "Software Engineer"
},
{
"Name": "Marcus Svensson",
"Age": "26",
"Id": 1,
"Role": "Project Manager"
},
{
"Age": "25",
"Name": "Trevor McNoah",
"Id": 2,
"Role": "CTO"
}
]

【问题讨论】：

标签： javascript node.js

【解决方案1】：

JavaScript 有delete 运算符：

data.forEach(item => {
  delete item['Address'];
})

您可以阅读有关删除运算符here 的更多信息。

【讨论】：

【解决方案2】：

你可以这样做：所以你不会改变初始数组。

const listWithoutAddress = list.map(({Adress, ...rest}) => ({...rest}));

【讨论】：

【解决方案3】：

要从 js 对象中删除属性，可以使用 delete 命令，如下所示：

let arr =  [
{
"Name": "John Johnsson",
"Address": "Linkoping",
"Id": 0,
"Age": "43",
"Role": "Software Engineer"
},
{
"Name": "Marcus Svensson",
"Address": "Norrköping",
"Age": "26",
"Id": 1,
"Role": "Project Manager"
},
{
"Age": "25",
"Name": "Trevor McNoah",
"Id": 2,
"Address": "Stockholm",
"Role": "CTO"
}
];

console.log(arr);

arr.forEach(_=>{delete _.Address}); // <-- this is it

console.log(arr);

【讨论】：