javascript - 根据另一个对象数组过滤对象数组并返回合并数组

Question

我有一个像这样的对象数组:

phoneContacts= [
{
  firstName: "aaaa", 
  lasttName: "aaaa", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09121111111"},{id: "1", label: "home", number: "02188888888"}]
},
{
  firstName: "bbbb", 
  lasttName: "bbbb", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09122222222"},{id: "1", label: "home", number: "02177777777"}],
},
...]

我想用这样的数组过滤它:

registeredUsers= [
{
  ID: 1, 
  CellPhone: "09123333333"
},
{
  ID: 2, 
  CellPhone: "09121111111"
},
...]

并返回:

contactsMergerdWithID= [
{
  ID: 1,
  firstName: "aaaa", 
  lasttName: "aaaa", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09121111111"},{id: "1", label: "home", number: "02188888888"}]
},
{
  ID: 0,            // or without ID
  firstName: "bbbb", 
  lasttName: "bbbb", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09122222222"},{id: "1", label: "home", number: "02177777777"}]
},
...]

如果第一个数组的任何手机号码与第二个数组中的 CellPhone 匹配，我想返回第二个数组中具有匹配 ID 字段的第一个数组。我怎样才能做到这一点？

Answer 1

const registeredUsers= [ {
  ID: 1, 
  CellPhone: "09123333333"
}, {
  ID: 2, 
  CellPhone: "09121111111"
}];

phoneContacts= [ {
  firstName: "aaaa", 
  lasttName: "aaaa", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09121111111"},{id: "1", label: "home", number: "02188888888"}]
}, {
  firstName: "bbbb", 
  lasttName: "bbbb", 
  phoneNumbers: [{id: "1", label: "mobile", number: "09122222222"},{id: "1", label: "home", number: "02177777777"}],
}]

const contactsMergerdWithID = phoneContacts.map(contact => {
  const mobile = contact.phoneNumbers.find(phoneNumber => phoneNumber.label === 'mobile')
  const userfound = registeredUsers.find(user => user.CellPhone === mobile.number);
  return userfound ? { ...contact, ID: userfound.ID } : contact;
  // incase you dont want `phoneContacts` without `ID`, you can just return `false` instead of `contact` and put `.filter(Boolean)` after the `.map()`
});

console.log(contactsMergerdWithID);