• Review the Three Pillars
• Prepare to code the example

We've come a long way since we first took a look at Simple Liker. Remember our social media app that lets us "favorite" a post?

We took a close look at all of the components that make an action like that possible on the web. Now, it's time to review them and get ready to build our own.

We broke down the web programming concepts we're working with into Three Pillars. We've returned to those throughout our journey, so by now they're probably pretty familiar:

1. Manipulating the DOM
2. Recognizing JavaScript events
3. Communicating with the server

We practiced each step and dug into the JavaScript basics necessary to program each. With this experience, we can now pull the concepts and the practice together.

In the next lab, you'll have the opportunity to create your own Simple Liker from scratch. As you work through it, remember to take a step back whenever necessary to keep perspective on the whole process and each pillar's place within it.

With a solid grasp of all Three Pillars of web programming and how to implement them, we're prepared to code our own working web apps.