In this section, we will learn:
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How to install Node js
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How to set up MongoDB using MongoDB Atlas (cloud-based)
🟢 Step 1 Install Node js
Node.js is a JavaScript runtime used to run JavaScript code outside the browser. It is required to run backend applications.
✅ Installation Steps
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Search on Google:
shnodejs
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Click the official website: https://nodejs.org
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You’ll see two versions:
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LTS (Long Term Support) – Recommended for most users
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Current – Includes latest features
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Choose your Operating System (Windows, macOS, Linux) and download the LTS version.
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Once the download finishes, open the installer and follow the steps:
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Click Next → Accept License → Click Next → Complete Installation.
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🧪 Verify Installation
Open Command Prompt (CMD) or Terminal and type:
node -v
If it shows the Node.js version, installation was successful.
Then try:
node
You’ll enter the Node.js interactive shell. Type:
2 + 2
You should see:
4
Press
Ctrl + C twice to exit.
📊 Diagram: Node.js Installation Flow
Google Search → Node.js Website → Download Installer → Install → Verify in CMD
🍃 Step 2: Set Up MongoDB with MongoDB Atlas
MongoDB Atlas is a cloud version of MongoDB that we will use instead of a local installation. It’s reliable, scalable, and production-ready.
✅ Installation Steps
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Search on Google:
shmongodb atlas
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Click the official link: https://www.mongodb.com/atlas
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From the top menu, go to Products → MongoDB Atlas.
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Click Start Free and fill in the signup form (email, name, etc.). Then click Get Started.
🏗️ Set Up Your First Cluster
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Choose Free Tier (Shared Clusters) → Click Create.
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Choose the following:
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Cloud Provider: AWS
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Region: Asia (Mumbai) – if you’re in India
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Name your cluster: e.g.,
test_mongodb -
Click Create Cluster
⚠️ This process may take 5–10 minutes.
🧩 Connecting to MongoDB Atlas
Once your cluster is created, follow these steps:
1. Whitelist Your IP Address
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Click Connect
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Choose Add My Current IP Address
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To find your IP, just Google:
what is my IP address
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2. Create MongoDB User
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Enter a username (e.g.,
testmongodb) -
Set a password (choose something secure)
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Save these credentials
3. Choose a Connection Method
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Select “Connect Your Application”
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MongoDB Atlas will provide a connection string
Example:
mongodb+srv://testmongodb:<password>@cluster0.mongodb.net/
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Replace
<password>with your chosen password
📝 Save this connection string. You’ll use it in your application code.
MongoDB Atlas → Create Cluster → Whitelist IP → Create User → Get Connection String
✅ Final Result
Congratulations! 🎉
You have now:
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Installed Node.js
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Created a cloud MongoDB database using MongoDB Atlas
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Got the connection string needed to connect your app