1.Introduction to Full Stack JavaScript
A Full Stack JavaScript Developer is proficient in both front-end and back-end development using JavaScript. They work with frameworks, libraries, and databases to build dynamic web applications. Key Technologies Covered:- Front-End: HTML, CSS, JavaScript, React.js, Angular, Vue.js
- Back-End: Node.js, Express.js
- Database: MongoDB, MySQL, PostgreSQL
- Version Control: Git, GitHub
- Deployment & DevOps: Docker, AWS, Firebase
2.Front-End Development
Core Technologies| Technology | Description |
| HTML5 | Structure of web pages |
| CSS3 | Styling and layout |
| JavaScript (ES6+) | Dynamic web interactions |
| React.js / Vue.js / Angular | Front-end frameworks for UI |
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My First Page</title>
<link rel="stylesheet" href="styles.css">
</head>
<body>
<h1>Hello, World!</h1>
</body>
</html>
// ES6 Features
let name = "John";
const age = 25;
const greet = () => console.log(`Hello, ${name}!`);
greet();
document.getElementById("demo").innerHTML = "Hello JavaScript!";
document.querySelector(".btn").addEventListener("click", () => alert("Clicked!"));
3.Front-End Frameworks & Libraries
React.js Basics
import React from "react";
function App() {
return <h1>Hello, React!</h1>;
}
export default App;
const Counter = () => {
const [count, setCount] = React.useState(0);
return (
<div>
<p>Count: {count}</p>
<button onClick={() => setCount(count + 1)}>Increment</button>
</div>
);
};
4. Back-End Development (Node.js & Express.js)️
Node.js Essentials
const fs = require('fs');
// Read a file
fs.readFile('file.txt', 'utf8', (err, data) => {
if (err) throw err;
console.log(data);
});
const express = require("express");
const app = express();
app.get("/", (req, res) => {
res.send("Hello, World!");
});
app.listen(3000, () => console.log("Server running on port 3000"));
app.use(express.json()); // Parse JSON requests
app.post("/data", (req, res) => {
res.json({ message: "Data received", data: req.body });
});
5.Database Management (MongoDB, MySQL, PostgreSQL)️
MongoDB with Mongoose
const mongoose = require("mongoose");
mongoose.connect("mongodb://localhost:27017/mydb", { useNewUrlParser: true });
const UserSchema = new mongoose.Schema({ name: String, age: Number });
const User = mongoose.model("User", UserSchema);
User.create({ name: "Alice", age: 25 });
CREATE TABLE users (
id INT AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(100),
email VARCHAR(100) UNIQUE
);
6.Authentication & Security
JWT Authentication in Node.js
const jwt = require("jsonwebtoken");
const token = jwt.sign({ id: 123 }, "secretkey", { expiresIn: "1h" });
jwt.verify(token, "secretkey", (err, decoded) => {
if (err) console.log("Invalid Token");
else console.log("User ID:", decoded.id);
});
const bcrypt = require("bcrypt");
const password = "mypassword";
const hashedPassword = bcrypt.hashSync(password, 10);
console.log(bcrypt.compareSync("mypassword", hashedPassword)); // true
7.RESTful API Development
Basic API with Express.js
const express = require("express");
const app = express();
app.use(express.json());
app.get("/users", (req, res) => {
res.json([{ id: 1, name: "John Doe" }]);
});
app.listen(3000, () => console.log("API running on port 3000"));
app.post("/users", async (req, res) => {
const user = new User(req.body);
await user.save();
res.status(201).json(user);
});
8.Deployment & DevOps
Deploying with Docker 1.Create a Dockerfile
FROM node:14
WORKDIR /app
COPY package.json .
RUN npm install
COPY . .
CMD ["node", "server.js"]
EXPOSE 3000
docker build -t myapp .
docker run -p 3000:3000 myapp
sudo apt update
sudo apt install nodejs npm
pm2 start server.js
pm2 save
pm2 startup
9.Version Control with Git & GitHub
Git Commands| Command | Description |
| git init | Initialize a repository |
| git clone <repo> | Clone a repository |
| git add . | Stage changes |
| git commit -m “Message” | Commit changes |
| git push origin main | Push to remote repo |
| git pull origin main | Pull latest changes |
10.Testing in Full Stack Development
Unit Testing with Jest
const sum = (a, b) => a + b;
test("adds 1 + 2 to equal 3", () => {
expect(sum(1, 2)).toBe(3);
});
- Send GET, POST, PUT, DELETE requests.
- Use JSON payloads for data.
- Validate responses & error handling.
11.Full Stack JavaScript Roadmap
- Master JavaScript & ES6+.
- Learn Front-End Frameworks (React, Vue, Angular).
- Understand Back-End with Node.js & Express.js.
- Work with Databases (MongoDB, SQL).
- Build RESTful APIs & Authentication.
- Version Control with Git & GitHub.
- Deploy Applications using Docker & AWS.
- Write Unit Tests for Reliability.
