Installing dependencies
You can install the necessary dependencies using the following command:
npm install express
This will install the Express framework, which is a popular web framework for Node.js.
Creating a new project directory
Once you have installed the dependencies, you can create a new project directory using the following command:
mkdir my-app
Creating a index.js
file
Now that you have created a new project directory, you need to create a index.js
file. This file will contain the code for your app.
Importing the Express framework
In your index.js
file, you need to import the Express framework. You can do this by adding the following line to your file:
JavaScriptconst express = require('express');
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Creating an app
Now that you have imported the Express framework, you can create an app. You can do this by creating a new instance of the Express class.
JavaScriptconst app = express();
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Listening for requests
Now that you have created an app, you need to listen for requests. You can do this by using the app.listen()
method.
JavaScriptapp.listen(3000);
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This will listen for requests on port 3000.
Running your app
Once you have listened for requests, you can run your app by running the following command in your project directory:
npm start
This will start a development server that will run your app. You can then open your app in a web browser by visiting the URL http://localhost:3000.