js数组遍历处理数据的问题

Question

let arr =
[
{

test:[{'q1':'111','q2':'222','q3':'333'},{'q1':'444','q2':'555','q3':'666'}],
test2:[{'key':'q1'},{'key':'q2'},{'key':'q3'}]

},
{
...
}
]

最终效果：
arr2 = [
{'key':'q1','value':'111'},{'key':'q2','value':'222'},{'key':'q3','value':'333'},
{'key':'q1','value':'444'},{'key':'q2','value':'555'},{'key':'q3','value':'666'}
]

Answer 1

test = [{'q1':'111','q2':'222','q3':'333'},{'q1':'444','q2':'555','q3':'666'}]
test2 = [{'key':'q1'},{'key':'q2'},{'key':'q3'}]

test.map(t => test2.map(m => ({...m, value: t[m.key]}))).flat()