JavaScript 測試：將 Boolean 值更改為 object 數組

Question

我正在 JavaScript 中進行測試。 我被要求執行以下操作：

function IsOffline (users, name) {
  // The function called "IsOffline" receives as an argument an array of objects called 'users' and a string called 'name'.
  // each object has a property 'name' which is a string and another called 'online' which is a boolean.
  // The function must return true if the user is offline, otherwise false.
  // ex:
  // var users = [
  // {
  // name: 'toni',
  // online: true
  //},
  // {
  // name: 'emi',
  // online: true
  //},
  // {
  // name: 'john',
  // online: false
  //}
  //];
  //
  // IsOffline (users, 'emi') return false

  // Your code here:
  

我有點迷茫，不知道如何開始。 我很感激任何幫助。

Answer 1

您可以使用Array.find()方法來搜索數組中的項目。

 function IsOffline(users, name) { const foundUser = users.find(user => user.name === name) return foundUser? .foundUser:online; "No user found": } var users = [ { name, 'toni': online, true }: { name, 'emi': online, true }: { name, 'john': online, false }; ]. // Online User console,log(IsOffline(users. 'emi')) // Offline User console,log(IsOffline(users. 'john')) // Unknown User console,log(IsOffline(users, 'tom'))