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

## What is the facade pattern?

In English, the word *facade* means a *deceptive front or appearance*. Following this definition, a facade pattern provides a simpler interface that hides the complex functionalities of a system. This is widely used in JavaScript libraries like jQuery. 

The facade pattern allows you to hide all the messy logic from the client and only display the clear and easy-to-use interface to them. This allows them to interact with an API easily in a less error-prone way and without accessing the inner workings directly. 

# What is the facade pattern?

In English, the word *facade* means a *deceptive front or appearance*. Following this definition, a facade pattern provides a simpler interface that hides the complex functionalities of a system. This is widely used in JavaScript libraries like jQuery. 

The facade pattern allows you to hide all the messy logic from the client and only display the clear and easy-to-use interface to them. This allows them to interact with an API easily in a less error-prone way and without accessing the inner workings directly. 

In this lesson, we will go over the facade pattern in detail with the aid of a coding example.

Before We Begin

Introduction To Design Patterns

Creational Patterns

Structural Patterns

Behavioral Patterns

Architectural Patterns

Conclusion

Facade Pattern

What is the facade pattern?