Next.Js Example

React State: Emoji Passcode Checker

March 12th, 2023

React State: Emoji Passcode Checker's picture


In the src/App.js file, you can find the building blocks for an emoji passcode checker.

Looking at the validCode variable, we understand that the code consists of a sequence of three emojis. Each button click should "lock in" one emoji. If the code that was entered matches the passcode, your code will be confirmed as valid. The reset button should reset the code, so you can start over. Toward the bottom of the App function you'll find a line that conditionally generates a p element as soon as the input code matches the validCode declared at top of the function.

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Local development

To run project commands locally, you need to install the dependencies using npm i first.

You can then use the following commands:

  • npm run start to start the development server
๐Ÿ’ก This project requires a bundler. You can use npm run start to start the development server. You can then view the project in the browser at http://localhost:3000. The Live Preview Extension for Visual Studio Code will not work for this project.

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