How to change port number in React.js?

@audrey.hodkiewicz You can update your package.json file with the needed port number in React:

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"start": "PORT=8080 react-scripts start"

@audrey.hodkiewicz 

In a React.js application, you can change the port number by specifying the port in the command to start the development server. Here is an example:

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npx react-scripts start --port=3001

Replace 3001 with the desired port number. This command will start the development server on the specified port.

Alternatively, you can also modify the start script in the scripts section of your package.json file:

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"scripts": {
    "start": "react-scripts start --port=3001",
    ...
  }

And then run npm run start to start the development server on the specified port.