Share your version of CountdownChamp, or build your own CountdownChamp-inspired application!

At this point, you’ve learned enough to build a basic a React project from scratch. Use your newfound skills to create the application you always wanted!

Here’s a few ideas:

Make a stopwatch app. The user inputs the amount of time for the clock to run, and it starts counting to 0.
Make a todo-list. This application reminds the user when they have to do certain tasks using a combination of cookies and alert messages.
Extend CountdownChamp to tell the user when the timer reaches 0.
Create something unique of your own!

Also, as an overview, here’s the important concepts you learned:

React Components - re-usable and independent pieces of React code that comprise the User Interface.
ES6 importing and exporting - a new syntax for sharing code between separate files. Used in cases like `import React from ‘react’`
State - the pertinent data to an application. Each component has its local state as long as you declare add the constructor to a Component and declare its state object.
Updating State - When updating state, make sure to never mutate state directly. Doing so will lead to fatal errors in your application. Instead, re-declare new instances of state arrays or objects and use the setState() function to update state.
Props - similar to state, except this data inherits from parent component specifying pieces of state as properties.
LifeCycle Methods - events in React components that trigger in cases such as rendering on or off the screen, or during state updates. One example is the `componentDidMount()` lifeCycle hook.

It would be awesome if you choose to share the project you build. Seeing your project will help other students. Also, it just might turn into a viral hit! You got this!

[“hip”, “hip”]

(Hip-Hip Array)

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Community

Teaching

Mobile