README.md

React Query Basics

Project Setup

1. New react project using CRA

npx create-react-app react-query-basics

2. Set up an API endpoint that serves mock data for use in our application

First, install json-server.

npm install json-server

Then, in the root directory, create db.json file.

{
    "superheroes": [
        {
            "id": 1,
            "name": "Batman",
            "alterEgo": "Bruce Wayne"
        },
        {
            "id": 2,
            "name": "Superman",
            "alterEgo": "Clark Kent"
        },
        {
            "id": 3,
            "name": "Wonderwoman",
            "alterEgo": "Princess Diana"
        }
    ]
}

In the package.json folder, add the following under "scripts" field:

  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject",
    "serve-json": "json-server --watch db.json --port 4000" //add this
  }

Test your API:

npm run serve-json

For deployments related to json-server, see this:

https://my-json-server.typicode.com/

3. Set up react router and a few routes in the application.

Install react-router-dom:

npm install react-router-dom

4. Fetch data the traditional way using useEffect and useState

Documents

• Fetching Data with useQuery

Getting Started with Create React App

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 your browser.

The page will reload when you make changes.
You may 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