Learn to apply your introductory knowledge of HTML, CSS, and JavaScript to build beautiful, real-world components. In this course, you'll go through the process of developing several complex components, including:

- eBay's dropdown menu
- Gmail's auto-validating form
- Google's main autocomplete enabled search
- Twitter's infinitely scrolling list
- Medium's tooltips

You'll learn how to approach common frontend challenges, what questions to ask yourself, how to design solutions once you've thought of them, how to debug and work with mistakes, and more.

The end-goal is to empower you to look at anything you see on a website and be able to say, "I can build that!"

Intermediate JavaScript: Building Frontend Components

## The protocol
A mock server is going to play an important role in this component. Let's talk a little more about client-server communication in regards to how the client consumes APIs.

This is a simplified view of the main issue:

# The protocol
A mock server is going to play an important role in this component. Let's talk a little more about client-server communication in regards to how the client consumes APIs.

This is a simplified view of the main issue:

Let's talk a little about the client and the server are expected to interact and what that implies for our implementation

Welcome

Building a Dropdown Menu

Building the Autocomplete Search

Building Tooltips

Building an Autovalidating Form

Building an Infinite List

From Toy Components to Production

Server Client Communication

The protocol