efficient way to get values from object based on id list

Question

I have list of users :

users: Array<any> = [{id:1,name:'A'},{id:2,name:'B'},{id:3,name:'C'}];

and

this.selectedUsers = [1,2];

How do I get all the objects from the users array having an id found in the selectUsers array?

Answer 1

您可以将indexOf与filter一起使用。

this.users.filter(user => this.selectedUsers.indexOf(user.id ) > -1)

Answer 2

I think this should do what you want:

var found = this.users.filter(
    item => this.selectedUsers.some(id => item.id == id)
)

update

var found = this.users.filter(
    item => this.selectedUsers.some(id => item.id == id)
).forEach(item => {
  item.label = item.name;
  item.name = undefined;
});

or

var found = this.users.filter(
    item => this.selectedUsers.some(id => item.id == id)
).map(item => {id: item.id, label: item.name});