The ultimate guide to coding interviews: Learn and practice JavaScript design patterns tested by FAANG engineers. Get interview-ready in just a few hours with battle-tested solutions.

If you're an experienced developer, chances are your interviewer won't ask you about language syntax. Instead, they'll focus on things that test your understanding of software architecture, and how capable you are at finding optimized solutions to given problems. 

That’s where a strong understanding of design patterns comes in handy. It's often useful to be able to draw on established patterns instead of reinventing the wheel.

In this course, you will learn how to effectively deploy design patterns to answer interview questions. The course is divided into four sections: Creational Patterns, Structural Patterns, Behavioral Patterns, and Architectural Patterns. Each section has its own set of design patterns which you’ll learn to use through various challenges. 

Every challenge contains a detailed solution explanation. By the end of this course (and with some practice), you will be able to confidently use design patterns to tackle advanced coding interview questions in JavaScript.

JavaScript Design Patterns for Coding Interviews

# Problem statement

In this challenge, you need to implement sending and displaying a sent email using the MVP pattern. You have already been given the dummy code for the classes you need to implement.

The `Model` class should contain the following:

* The properties: sender's name, receiver's name, and the email title

* The get and set functions to access and set the values of each property

In the `View` class, you need to do the following:

* Define the `sendEmail` function to send an email

In the `Presenter` class, you need to do the following:

* Define the `setModel` function that sets the model

* Define the `getView` function to return the view

* Define the `sendEmail` function that sets the properties of the email and displays the email information

# Input

The `sendEmail` function is called

# Output

The information of the email is displayed 

# Sample input

```
var model   = new Model()
var view = new View()
var presenter = new Presenter(view)
presenter.setModel(model)
view.registerWith(presenter)
presenter.getView().sendEmail("Rachel", "Joey", "Rent Discussion")
presenter.getView().sendEmail("Monica", "Phoebe", "Smelly Cat Draft")
```

# Sample output

```
"Email From: Joey To: Rachel Title: Rent Discussion"

"Email From: Phoebe To: Monica Title: Smelly Cat Draft"
```

In this challenge, you have to implement the MVP pattern to solve the given problem.

Before We Begin

Introduction To Design Patterns

Creational Patterns

Structural Patterns

Behavioral Patterns

Architectural Patterns

Conclusion

Challenge: MVP Pattern

Problem statement