Login

function login(username, password){
  
  let users = [
    {
      username: 'matt',
      password: 'password'
    }
  ];
  
  let result = false;
  
  for(let i = 0; i < users.length; i++){
    let user = users[i];
    
    if(user.username === username && user.password === password){
      result = true;
    }
  }
  
  return result;
}