mdewey commented 5 years ago

Crypto Ticker

In this project, you'll use React and the 3rd-party API as a data to create a real-time price tracker for some popular cryptocurrencies.

Objectives

Use state in React
Render data from an API request in React
Use setInterval to repeat
Use React the following lifecycle methods: componentDidMount, componentWillUnmount
Use React Component subclasses
Use stateless-functional components in React

Requirements

Use the following API endpoint to fetch data and display it in your application:

https://api.coinmarketcap.com/v2/ticker/?limit=20

The data should refresh periodically. Using the id field in the API results for each currency, you can get the URL for the logo of a coin like this:

https://s2.coinmarketcap.com/static/img/coins/16x16/${coin.id}.png

Explorer Mode

[ ] Use create-react-app to set up your new application.
[ ] Fetch new currency data from the API endpoint every 10 seconds.
[ ] Update the applications state with currency data from the API.
[ ] Create an HTML table to display the currency data in the application state.
[ ] Use props to render table rows as child components for each currency in the application state.
[ ] Use stateless-functional components where appropriate.

Adventure Mode

[ ] If the updated price of a currency is higher than the last update, show the price in green. If it's lower, show the price in red. HINT: You'll probably want to look into additional lifecycle methods for your React components to accomplish this.

Epic Mode

[ ] How else could we present the changing price to the user? Look into Edward Tufte's sparklines, how do you think this could be implemented as a React component? Try using a third party library to render a sparkline for each currency.