如何删除JSON类型的所有属性

Question

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的"地址"?字段?所以我得到了下面的结果。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"
}
]

Answer 1

JavaScript有delete操作符:

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

你可以在这里阅读更多关于delete操作符的信息。

Answer 2

你可以这样做:这样你就不会改变初始数组。

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

Answer 3

要从js对象中删除一个属性，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);