javascript - 尝试在类中创建属性然后设置它们的值

Question

我以为我做对了，但错误是:

失败的测试:

Should be a class with name, email, and password properties. Expected undefined to be 'Dan'.

我查看了 MDN 和 w3schools，但显然，我只是不理解它。不过我知道我很接近。

function ClassOne(name, pw, mail){
   /*Exercise One: In this exercise, you will be creating your own class!
   You are currently in the class, you are given three strings, name, pw, and mail.
   You need to create three properties on this class.
   Those properties are: 'username', 'password', and 'email'
   Set the value of username to name,
   Set the value of password to pw,
   Set the value of email to mail */
    }
  function User(username, password, email) {
      this.username = 'name';                 //<-------My Code
      this.password = 'pw';                   //<-------My Code
      this.email = 'mail';                    //<-------My Code
  }
 const dan = new User ('Dan', '123xyz', 'dan@aol.com');          //<-------My Code

Answer 1

您需要将属性设置为等于您传递给构造函数的参数。现在您正在将值传递给构造函数，但不使用它们。一旦进入构造函数，您就可以将属性值设置为文字字符串。像这样尝试:

function ClassOne(username, password, email) {
  this.username = username;
  this.password = password;
  this.email = email;
}
const dan = new ClassOne('Dan', '123xyz', 'dan@aol.com');

console.log(dan);