Codetalk Coding Challenge

1. Install homebrew https://brew.sh/

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

2. Install node via homebrew

brew install node

Run npm -v to make sure that the version is higher than 6

3. Create React App: https://facebook.github.io/create-react-app/docs/getting-started

npm init react-app my-app
cd my-app
npm start

Now open src/App.js with a code editor

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4. Do a google image search for a fun bear gif and copy the url (make sure it ends in .gif) Replace image src tag on line 9 with your selected bear gif and check out the webpage in the browser

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5. Look at src/App.css and try to make the image stop spinning

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6. Save your bear gif url in a variable called imageUrl, use that variable in the image src tag, and check out the webpage in the browser

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7. Convert the function component to a class component, including a render method
8. Add a state property to the component with an imageUrl field
9. Update the image src tag to use the component state: this.state.imageUrl

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10. Add an html button to App.js

<button>Get More Bear Gifs</button>

11. Add an onClick callback to the button

<button onClick={() => window.alert("hello")}>Get More Bear Gifs</button>

After you see the hello message, modify the code to alert the imageSource

<button onClick={() => window.alert(this.state.imageSource)}>Get More Bear Gifs</button>

12. Move the onClick function to a separate component method called fetchImage

<button onClick={this.fetchImage}>Get More Bear Gifs</button>

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13. Modify the fetchImage function to fetch an image

• Giphy Developer Docs
• Javascript’s Fetch API
• GIPHY API KEY: aHi5kZ49h4esZTalKqyvkBO2llvuHeJr

Example:

fetch('http://api.giphy.com/v1/gifs/random?api_key=aHi5kZ49h4esZTalKqyvkBO2llvuHeJr&tag=bears')
  .then(function(response) { return response.json(); }) 
  .then(function(myJson) { console.log(myJson); });

14. Look at the data that is returned in the console, you can see there is a lot returned. We only want to use response.data.images.original.url

15. Modify your fetchImage function to use this.setState()

• React State and Lifecycle

• Pass in the response.data.images.original.url into imageSource

16. Try it out!

Extra Challenge:

Add a text input to populate the search string

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits.
You will also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can’t go back!

If you aren’t satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.

You don’t have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing the Bundle Size

This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

This section has moved here: https://facebook.github.io/create-react-app/docs/deployment

npm run build fails to minify

This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify