Specify port with the run command

Prerequisites

React JS Node.js & NPM...

Creating React Application

Step 1: Create a new react application running the below command to your terminal....

Project structure

It will look like this....

Method 1: Create an environment variable

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Method 2: Edit the package.json file

This is the simplest method to change the default port of the react app. We need to create the .env file inside the project directory and add the environment variable. Users need to add the below code inside the .env file....

Method 3: Install and add cross-env package

In this method, we have to edit a single line of code inside the package.json file. Here, The user will find the code like “start”: “react-scripts start” inside the “scripts” object. In the below image, you can see the default view of the “scripts” object....

Method 4: Specify port with the run command

First, we need to install the “cross-env” package in the project directory. So, open the terminal and run the below command inside the project directory....