Introduction to Express, EJS and JavaScript

Express, EJS and JavaScript are powerful tools that can be used to build dynamic and interactive web applications. In this article, we will explore the features and benefits of these technologies, and see how they can be used together to create robust and scalable web applications.

Express

Express is a popular web application framework for Node.js. It provides various features and tools for building web applications, such as middleware, routing, and templating. With Express, you can easily define the routes for your application, handle HTTP requests and responses, and create dynamic web pages using templating engines such as EJS.

Some of the key features of Express include:

• Middleware: Express provides a wide range of middleware that can be used to handle various aspects of the request/response cycle, such as parsing request bodies, handling authentication, and serving static files.

• Routing: Express provides a simple and powerful API for defining routes for your web application. You can define routes for different HTTP methods (GET, POST, PUT, DELETE), and handle requests that match specific patterns.

• Templating: Express supports various templating engines, including EJS, which we will discuss in more detail below. With templating, you can create dynamic web pages that are generated on the server side, based on data passed into the templates.

EJS

EJS (Embedded JavaScript) is a powerful templating engine that can be used with Express and Node.js. It allows you to embed JavaScript code directly into your HTML markup, allowing you to generate dynamic content on the server side.

Some of the key features of EJS include:

• Code execution: EJS allows you to execute JavaScript code directly in your templates, giving you full access to data and logic on the server side.

• Conditional rendering: EJS allows you to conditionally render content in your templates, based on data or logic. This allows you to create responsive and adaptable web pages.

• Partial views: EJS supports partial views, which allow you to create reusable templates for common elements of your web page, such as headers and footers.

JavaScript

JavaScript is a programming language that is commonly used for frontend and backend development. It can be used to add interactivity and dynamic features to web pages, and is supported by all major web browsers.

Some of the key features of JavaScript include:

• Event handling: JavaScript allows you to handle user events, such as clicks and mouse movements, and respond to them with custom logic.

• Manipulation of the DOM: JavaScript allows you to manipulate the Document Object Model (DOM), which represents the structure of your web page, in real-time.

• Asynchronous programming: JavaScript supports asynchronous programming, which allows you to perform long-running tasks, such as network requests, without blocking the main thread.

Conclusion

Express, EJS and JavaScript are powerful tools that can be used to build robust and scalable web applications. By combining the features and benefits of these technologies, you can create dynamic and interactive web pages that respond to user input and provide a great user experience. Whether you are building a small personal project or a large-scale enterprise application, these technologies are a great choice.