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JavaScript Practice Classes in JavaScript Practicing Classes Practice Adding Methods

Ilya Treehouse
Ilya Treehouse
118 Points

How can I call the method?

Can someone help me with that calling issue, please? Not sure how can I call a method not a class.

User.js
class User {
    constructor(email, username, birthday) {
        this.email = email;
        this.username = username;
        this.birthday = birthday;
    }

    changeUsername(username) {
        this.username = username;
    }
}

var user1 = new User('JavaScriptStudent@teamtreehouse.com', 'JSUser1', '1/08/1991');

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,846 Points

You call your method from the class instance with dot notation.

Try the following:

class User {
    constructor(email, username, birthday) {
        this.email = email;
        this.username = username;
        this.birthday = birthday;
    }

    changeUsername(username) {
        this.username = username;
    }
}

const user1 = new User('JavaScriptStudent@teamtreehouse.com', 'JSUser1', '1/08/1991');

console.log(user1.birthday);
console.log("username before method call --> " + user1.username);
user1.changeUsername('did this work?');   // this is the method call
console.log("username after method call --> " + user1.username);

// output:
1/08/1991
username before method call --> JSUser1
username after method call --> did this work?

:tropical_drink: :palm_tree: