How to change a port number in Vue App

In this tutorial, we are going to learn how to change a default port number in vue app which is created using the vue cli.

Changing port number

1. Open the vue app in your favorite code editor.

2. Create a new file called vue.config.js in your root directory.

3. Add the following code, by replacing it with your port number.

module.exports = {
    devServer: {
        port: 3454    }
}

4. Now, run the app using npm run serve command, your port number is successfully changed.

 DONE  Compiled successfully in 2114ms


  App running at:
  - Local:   http://localhost:3454/
  - Network: http://192.168.43.18:3454/

  Note that the development build is not optimized.
  To create a production build, run npm run build.

If you want to change the port number temporarily, you can add a --port option to npm run serve command.

Example:

npm run serve -- --port 2345

You can also learn about, how to change a port number in React.