This CodeSandbox offers some exercises to recap some advanced array methods. Let's dive in!
In the ./index.js file, there is an animalStrings array with - guess what? - animal names as strings.
Below this array, you will find a couple of variables (e.g. hippoExists). They all are initialized with null.
And now it's your turn: delete the value null and write code such that the variables have a value corresponding to their name. Use the following methods to achieve this goal:
Array.includes()Array.find()Array.findIndex()Array.sort()Array.some()Array.every()Array.reduce()
Additionally, you will need:
String.startsWith()String.endsWith()
You will find some hints as comments.
Switch to the ./index.js file and work with animals!
- If you want to check whether you solved the tasks correctly, open the "Tests" tab of Codesandbox.
❗️ This project is JavaScript only. Please check the browser console (⌥⌘I) for the output or run the tests to see the results.
To work locally, please install the dependencies using npm i first.
Run npm run start to start a development server and open localhost:3000 in a browser.
Alternatively you can use the Live Preview Extension for Visual Studio Code to view this project.
Select the HTML file you want to view, press ⇧⌘P, search forLive Preview: Show Previewand confirm with Enter.
Use npm run test to run the tests.
Select the "Preview: 3000" tab to view this project.
Select the "Tests: logs" tab to view the tests.
The
npm run startandnpm run testscripts run automatically.
You can use the following commands:
npm run startto start a development servernpm run testto run the testsnpm run lintto run the linter