如何将增量索引分配给下面对象的嵌套数组？每个成员都有一个属性1,2,3,4
groupMembersByTitle = [{
members: [{
id: 'uuid'
}, {
id: 'uuid'
}]
}, {
members: [{
id: 'uuid'
}, {
id: 'uuid'
}]
}]
I'm stuck here
const r = groupMembersByTitle.map(o => ({
...o,
members: o.members.map((o2, index) => ({
...o2,
no: ++index
}))
}))
您需要一个更持久的外部变量.
const groupMembersByTitle = [{
members: [{
id: 'uuid'
}, {
id: 'uuid'
}]
}, {
members: [{
id: 'uuid'
}, {
id: 'uuid'
}]
}];
let no = 1;
const mapped = groupMembersByTitle.map(
obj => ({
members: obj.members.map(
member => ({ ...member, no: no++ })
)
})
);
console.log(mapped);