如何使用lodash在对象数组中计数
我有如下对象数组：
[
{
company: "CompanyName",
id: "1",
userProfile: {
id: "2",
telephone: "",
user: {
email: "some_email",
firstName: "Firstname",
lastName: "Lastname",
groups: [
{id: "2", name: "Manager"},
{id: "10", name: "Remarketing Manager"}
]
}
}
},
{
company: "CompanyName",
id: "2",
userProfile: {
id: "3",
telephone: "",
user: {
email: "some_email",
firstName: "Firstname",
lastName: "Lastname",
groups: [
{id: "1", name: "Seller"}
]
}
}
},
{
company: "CompanyName",
id: "3",
userProfile: {
id: "4",
telephone: "",
user: {
email: "some_email",
firstName: "Firstname",
lastName: "Lastname",
groups: [
{id: "2", name: "Manager"}
]
}
}
}
]
我想依靠group name。
因此，我想要的结果是：
{
"Manager": 2,
"Seller": 1,
"Remarketing Manager": 1,
}
我尝试用lodash countBy如下：
countBy(users, 'userProfile.user.groups.name');
但这是行不通的。
https://jsfiddle.net/suf3db4y/1/
呼唤远方2回答
-
慕码人2483693
您可以使用减少let data = [{company: "CompanyName",id: "1",userProfile: {id: "2",telephone: "",user: {email: "some_email",firstName: "Firstname",lastName: "Lastname",groups: [{id: "2", name: "Manager"},{id: "10", name: "Remarketing Manager"}]}}},{company: "CompanyName",id: "2",userProfile: {id: "3",telephone: "",user: {email: "some_email",firstName: "Firstname",lastName: "Lastname",groups: [{id: "1", name: "Seller"}]}}},{company: "CompanyName",id: "3",userProfile: {id: "4",telephone: "",user: {email: "some_email",firstName: "Firstname",lastName: "Lastname",groups: [{id: "2", name: "Manager"}]}}}]let final = data.reduce((op,{userProfile:{user:{groups}}}) => { groups.forEach(({name}) => { op[name] = op[name] || 0 op[name]++ }) return op},{})console.log(final)
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相关分类
JavaScript