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Khamisi Kibet

Khamisi Kibet

Software Developer

I am a computer scientist, software developer, and YouTuber, as well as the developer of this website, spinncode.com. I create content to help others learn and grow in the field of software development.

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    infor@spinncode.com

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    Nairobi, Kenya
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7 Months ago | 50 views

**Course Title:** Mastering Express.js: Building Scalable Web Applications and APIs **Section Title:** Template Engines and Serving Static Files **Topic:** Integrating template engines (EJS, Pug) with Express.js. **Overview** In this topic, we'll explore how to integrate template engines with Express.js to render dynamic HTML content. Specifically, we'll cover the popular EJS and Pug template engines, and show you how to set them up and use them with Express.js. By the end of this topic, you'll be able to render dynamic HTML templates in your Express.js application. **Why use a template engine?** Template engines allow you to separate presentation logic from application logic, making your code more organized and maintainable. They also enable you to reuse HTML templates and render dynamic content on the server-side. **EJS (Embedded JavaScript) Template Engine** EJS is a popular template engine for Node.js that allows you to embed JavaScript code inside HTML templates. Here's how to use EJS with Express.js: 1. **Install EJS**: Run `npm install ejs` in your terminal to install the EJS package. 2. **Set up EJS**: Create a new directory called `views` in your project root and add a new file called `index.ejs`. This will be our template file. 3. **Configure EJS**: In your `app.js` file, add the following code to configure EJS: ```javascript const express = require('express'); const app = express(); const ejs = require('ejs'); app.set('view engine', 'ejs'); // set the view engine to EJS app.set('views', './views'); // set the views directory ``` 4. **Render an EJS template**: To render an EJS template, use the `res.render()` method: ```javascript app.get('/', (req, res) => { res.render('index', { name: 'John Doe' }); // render the index.ejs template and pass data to it }); ``` **Example EJS template (index.ejs)** ```html <!DOCTYPE html> <html> <head> <title>My App</title> </head> <body> <h1>Hello, <%= name %></h1> </body> </html> ``` **Pug Template Engine** Pug is another popular template engine for Node.js that uses a whitespace-sensitive syntax. Here's how to use Pug with Express.js: 1. **Install Pug**: Run `npm install pug` in your terminal to install the Pug package. 2. **Set up Pug**: Create a new directory called `views` in your project root and add a new file called `index.pug`. This will be our template file. 3. **Configure Pug**: In your `app.js` file, add the following code to configure Pug: ```javascript const express = require('express'); const app = express(); const pug = require('pug'); app.set('view engine', 'pug'); // set the view engine to Pug app.set('views', './views'); // set the views directory ``` 4. **Render a Pug template**: To render a Pug template, use the `res.render()` method: ```javascript app.get('/', (req, res) => { res.render('index', { name: 'John Doe' }); // render the index.pug template and pass data to it }); ``` **Example Pug template (index.pug)** ```pug html head title My App body h1 Hello, #{name} ``` **Comparison between EJS and Pug** Both EJS and Pug are popular template engines for Node.js, but they have different syntax and features. Here's a brief comparison: | Feature | EJS | Pug | | --- | --- | --- | | Syntax | Embedded JavaScript | Whitespace-sensitive syntax | | Performance | Faster | Slower | | Learning curve | Easier | Steeper | **Conclusion** In this topic, we covered how to integrate template engines (EJS and Pug) with Express.js to render dynamic HTML content. We also compared the features and syntax of both template engines. In the next topic, we'll explore how to render dynamic content using templates. **External resources** * EJS documentation: <https://ejs.co/> * Pug documentation: <https://pugjs.org/> * Template engine comparison: <https://www.codecademy.com/learn/learn-express-js/modules/learn-express-03/cheatsheet> **Practical takeaways** * Set up EJS or Pug in your Express.js application to render dynamic HTML templates. * Use the `res.render()` method to render a template and pass data to it. * Choose the template engine that best fits your needs (syntax, performance, etc.). **Leave a comment or ask for help** If you have any questions or need help with integrating template engines with Express.js, please leave a comment below. We'll be happy to assist you.
Course

Integrating Template Engines with Express.js.

**Course Title:** Mastering Express.js: Building Scalable Web Applications and APIs **Section Title:** Template Engines and Serving Static Files **Topic:** Integrating template engines (EJS, Pug) with Express.js. **Overview** In this topic, we'll explore how to integrate template engines with Express.js to render dynamic HTML content. Specifically, we'll cover the popular EJS and Pug template engines, and show you how to set them up and use them with Express.js. By the end of this topic, you'll be able to render dynamic HTML templates in your Express.js application. **Why use a template engine?** Template engines allow you to separate presentation logic from application logic, making your code more organized and maintainable. They also enable you to reuse HTML templates and render dynamic content on the server-side. **EJS (Embedded JavaScript) Template Engine** EJS is a popular template engine for Node.js that allows you to embed JavaScript code inside HTML templates. Here's how to use EJS with Express.js: 1. **Install EJS**: Run `npm install ejs` in your terminal to install the EJS package. 2. **Set up EJS**: Create a new directory called `views` in your project root and add a new file called `index.ejs`. This will be our template file. 3. **Configure EJS**: In your `app.js` file, add the following code to configure EJS: ```javascript const express = require('express'); const app = express(); const ejs = require('ejs'); app.set('view engine', 'ejs'); // set the view engine to EJS app.set('views', './views'); // set the views directory ``` 4. **Render an EJS template**: To render an EJS template, use the `res.render()` method: ```javascript app.get('/', (req, res) => { res.render('index', { name: 'John Doe' }); // render the index.ejs template and pass data to it }); ``` **Example EJS template (index.ejs)** ```html <!DOCTYPE html> <html> <head> <title>My App</title> </head> <body> <h1>Hello, <%= name %></h1> </body> </html> ``` **Pug Template Engine** Pug is another popular template engine for Node.js that uses a whitespace-sensitive syntax. Here's how to use Pug with Express.js: 1. **Install Pug**: Run `npm install pug` in your terminal to install the Pug package. 2. **Set up Pug**: Create a new directory called `views` in your project root and add a new file called `index.pug`. This will be our template file. 3. **Configure Pug**: In your `app.js` file, add the following code to configure Pug: ```javascript const express = require('express'); const app = express(); const pug = require('pug'); app.set('view engine', 'pug'); // set the view engine to Pug app.set('views', './views'); // set the views directory ``` 4. **Render a Pug template**: To render a Pug template, use the `res.render()` method: ```javascript app.get('/', (req, res) => { res.render('index', { name: 'John Doe' }); // render the index.pug template and pass data to it }); ``` **Example Pug template (index.pug)** ```pug html head title My App body h1 Hello, #{name} ``` **Comparison between EJS and Pug** Both EJS and Pug are popular template engines for Node.js, but they have different syntax and features. Here's a brief comparison: | Feature | EJS | Pug | | --- | --- | --- | | Syntax | Embedded JavaScript | Whitespace-sensitive syntax | | Performance | Faster | Slower | | Learning curve | Easier | Steeper | **Conclusion** In this topic, we covered how to integrate template engines (EJS and Pug) with Express.js to render dynamic HTML content. We also compared the features and syntax of both template engines. In the next topic, we'll explore how to render dynamic content using templates. **External resources** * EJS documentation: <https://ejs.co/> * Pug documentation: <https://pugjs.org/> * Template engine comparison: <https://www.codecademy.com/learn/learn-express-js/modules/learn-express-03/cheatsheet> **Practical takeaways** * Set up EJS or Pug in your Express.js application to render dynamic HTML templates. * Use the `res.render()` method to render a template and pass data to it. * Choose the template engine that best fits your needs (syntax, performance, etc.). **Leave a comment or ask for help** If you have any questions or need help with integrating template engines with Express.js, please leave a comment below. We'll be happy to assist you.

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Mastering Express.js: Building Scalable Web Applications and APIs

Course

Objectives

  • Understand the fundamentals of Node.js and Express.js framework.
  • Build web applications and RESTful APIs using Express.js.
  • Implement middleware for error handling, logging, and authentication.
  • Master database integration with MongoDB and Mongoose.
  • Apply best practices for security, testing, and version control in Express.js applications.
  • Deploy Express.js applications to cloud platforms (Heroku, AWS, etc.).
  • Leverage modern development tools and practices such as Docker, Git, and CI/CD.

Introduction to Node.js and Express.js

  • Overview of Node.js and its event-driven architecture.
  • Understanding the Express.js framework and its benefits.
  • Setting up a Node.js development environment.
  • Basic routing and handling HTTP requests in Express.js.
  • Lab: Set up a Node.js and Express.js development environment and create a simple web server with basic routes.

Routing and Middleware

  • Understanding routing in Express.js (parameterized routes, query strings).
  • Using middleware to handle requests and responses.
  • Error handling middleware and logging requests.
  • Creating custom middleware functions.
  • Lab: Implement routing and middleware in an Express.js application to handle different HTTP methods and error scenarios.

Template Engines and Serving Static Files

  • Integrating template engines (EJS, Pug) with Express.js.
  • Rendering dynamic content using templates.
  • Serving static files (CSS, JavaScript, images) in Express.js applications.
  • Using the `public` directory for static assets.
  • Lab: Build a dynamic web page using a template engine and serve static assets from the public directory.

Working with Databases: MongoDB and Mongoose

  • Introduction to NoSQL databases and MongoDB.
  • Setting up MongoDB and Mongoose for data modeling.
  • CRUD operations with Mongoose (Create, Read, Update, Delete).
  • Defining schemas and validating data.
  • Lab: Create a RESTful API using Express.js and MongoDB with Mongoose for managing a resource (e.g., books, users).

Authentication and Authorization

  • Understanding authentication vs. authorization.
  • Implementing user authentication using Passport.js.
  • Creating and managing user sessions.
  • Role-based access control and securing routes.
  • Lab: Develop a user authentication system using Passport.js, including registration, login, and role management.

Building RESTful APIs

  • Principles of RESTful API design.
  • Creating RESTful routes and controllers in Express.js.
  • Handling API requests and responses (JSON format).
  • Implementing versioning for APIs.
  • Lab: Build a fully functional RESTful API with Express.js that includes all CRUD operations for a specific resource.

Security Best Practices in Express.js

  • Common security vulnerabilities (XSS, CSRF, SQL Injection).
  • Using Helmet.js for setting HTTP headers to secure Express apps.
  • Implementing rate limiting and input validation.
  • Best practices for securing sensitive data (password hashing, JWT).
  • Lab: Secure the RESTful API created in previous labs by implementing security measures and best practices.

Testing and Debugging Express Applications

  • Importance of testing in modern web development.
  • Introduction to testing frameworks (Mocha, Chai, Jest).
  • Writing unit and integration tests for Express.js applications.
  • Debugging techniques and tools.
  • Lab: Write unit tests for routes and controllers in an Express.js application and debug using built-in tools.

File Uploads and Handling Form Data

  • Handling form submissions and processing data.
  • Implementing file uploads using Multer middleware.
  • Validating uploaded files and managing storage.
  • Handling multipart/form-data.
  • Lab: Build a file upload feature in an Express.js application that processes and stores files securely.

Real-Time Applications with WebSockets

  • Introduction to WebSockets and real-time communication.
  • Integrating Socket.io with Express.js for real-time updates.
  • Building chat applications and live notifications.
  • Handling events and broadcasting messages.
  • Lab: Develop a simple chat application using Express.js and Socket.io to enable real-time communication between users.

Deployment and Continuous Integration

  • Preparing an Express.js application for production.
  • Introduction to cloud deployment options (Heroku, AWS, DigitalOcean).
  • Setting up a CI/CD pipeline with GitHub Actions.
  • Monitoring and maintaining deployed applications.
  • Lab: Deploy an Express.js application to a cloud platform and configure a CI/CD pipeline for automatic deployments.

Final Project and Advanced Topics

  • Review of advanced topics: Caching strategies, performance optimization.
  • Scaling Express applications (load balancing, microservices).
  • Final project guidelines and expectations.
  • Q&A session and troubleshooting for final projects.
  • Lab: Begin working on the final project that integrates learned concepts into a full-stack Express.js application.

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