所以
我收到的数据包含以下信息:
{
"data":[
{
"vote_count":22222,
"id":299537,
"ready":false,
},
{
"vote_count":2850,
"id":299534,
"ready":true,
},
]
}
现在,我需要制作一个包含相同结构但具有一些属性的新对象,即:
{
"data": [
{
"ready":false,
},
{
"ready":true,
}
]
}
我需要可扩展的解决方案,假设有一组具有50个属性的数据。另外,我确实找到了对象的解决方案,但从来没有对象数组的解决方案。
谢谢大家,我已经头昏了三个小时。
答案 0 :(得分:3)
您可以使用destrcuturing和shorthand property names创建新的对象,如下所示:
const input={"data":[{"vote_count":22222,"id":299537,"ready":false,},{"vote_count":2850,"id":299534,"ready":true,},]}
const data = input.data.map(({ ready }) => ({ ready }))
console.log({ data })
如果要获取一堆属性,则可以创建所需的属性数组。然后使用Object.assign()
或reduce
创建每个对象的子集,如下所示:
const input={"data":[{"vote_count":22222,"id":299537,"ready":false,},{"vote_count":2850,"id":299534,"ready":true,},]}
const properties = ["vote_count", "ready"]
const data = input.data.map(a =>
Object.assign({}, ...properties.map(p => ({ [p]: a[p] })))
)
/* You could also use reduce like this:
input.data.map(a => properties.reduce((r, p) => ({ ...r, [p]: a[p] }), {}))
*/
console.log({ data })
答案 1 :(得分:1)
映射所需的属性
var obj1 = {
"data":[
{
"vote_count":22222,
"id":299537,
"ready":false,
},
{
"vote_count":2850,
"id":299534,
"ready":true,
},
]
}
var obj2 = {}
obj2.date = obj1.data.map(data => ({ ready: data.ready}));
console.log(obj2)
答案 2 :(得分:1)
您可以使用Array#map
方法和Array#reduce
方法
const input = {
"data": [{
"vote_count": 22222,
"id": 299537,
"ready": false,
},
{
"vote_count": 2850,
"id": 299534,
"ready": true,
},
]
}
const extract = ['ready']
const data = input.data.map(o => extract.reduce((obj, k) => (obj[k] = o[k], obj), {}))
console.log({ data })