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 composite pattern?

The composite pattern is used to structure objects in a tree-like hierarchy. Here, each node of the tree can be composed of either child node(s) or be a leaf (no children objects). This pattern allows the client to work with these components uniformly, that is, a single object can be treated exactly how a group of objects is treated.

This pattern allows the formation of deeply-nested structures. If a *leaf* object receives the request sent by the client, it will handle it. However, if the recipient is composed of children, the request is forwarded to the child components.

# What is the composite pattern?

The composite pattern is used to structure objects in a tree-like hierarchy. Here, each node of the tree can be composed of either child node(s) or be a leaf (no children objects). This pattern allows the client to work with these components uniformly, that is, a single object can be treated exactly how a group of objects is treated.

This pattern allows the formation of deeply-nested structures. If a *leaf* object receives the request sent by the client, it will handle it. However, if the recipient is composed of children, the request is forwarded to the child components.

You will go over the composite pattern in detail with the aid of a coding example in this lesson.


Before We Begin

Introduction To Design Patterns

Creational Patterns

Structural Patterns

Behavioral Patterns

Architectural Patterns

Conclusion

Composite Pattern

What is the composite pattern?