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javascript - 根据动态键数组从数组返回值

转载 作者:行者123 更新时间:2023-12-01 08:30:01 25 4
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我有一个键数组,我想迭代它们并返回它们相应的值。

一般来说,我知道,我可以只执行 object.key_nameobject[key_name] 但我有一个动态数组,并且会填充不同的键。

数据:

data = [{hello: 'abc', asd: '123', fgh: '345' }, 
{hello: 'sdf', asd: '456', fgh: 'df' },
{hello: 'ty', asd: '789', fgh: '345675' },
{hello: 'qwe', asd: '123', fgh: '987' }]

数组格式:arr = ['asd', 'fgh']

我正在尝试这样做:let x = data.map(o => arr.map(strs => o[strs]));

结果:

["123", "345"]
["456", "df"]
["789", "345675"]
["123", "987"]

我有什么办法可以得到:

["123", "456", "789", "123"]  <= array for asd
["345", "df", "345675", "987"] <= array for fgh

最佳答案

更改 map 调用的顺序 - 首先迭代 format 数组,然后从 data 中提取值:

const data = [{"hello":"abc","asd":"123","fgh":"345"},{"hello":"sdf","asd":"456","fgh":"df"},{"hello":"ty","asd":"789","fgh":"345675"},{"hello":"qwe","asd":"123","fgh":"987"}]

const format = ['asd', 'fgh']

const result = format.map(f => data.map(o => o[f]))

console.log(result)

关于javascript - 根据动态键数组从数组返回值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/61330844/

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