Web applications are created using a combination of programming languages, such as HTML, CSS, and JavaScript, and they can be accessed from any device that has a web browser and an internet connection.
Web applications can be classified into two types: client-side and server-side applications. Client-side applications run on the user’s computer, while server-side applications run on the web server.
Client-side web applications are built using technologies such as HTML, CSS, and JavaScript. These applications are downloaded to the user’s computer and run on the browser. Examples of client-side web applications include social media websites, online games, and online shopping websites.
Server-side web applications, on the other hand, are built using server-side programming languages such as PHP, Python, and Ruby. These applications run on the web server and interact with the database and other resources to generate dynamic content. Examples of server-side web applications include e-commerce websites, online banking systems, and content management systems.
Web applications work by sending requests and receiving responses from the server. When a user enters a URL or clicks on a link, the browser sends a request to the web server, which processes the request and sends back a response. The response typically contains HTML, CSS, and JavaScript code that the browser uses to render the web page.
Web applications can also use APIs (Application Programming Interfaces) to interact with other web services and applications. APIs allow web applications to exchange data with other applications in real time, enabling users to perform complex tasks such as booking a flight or making a payment.
Web applications can also use cookies to store user information such as login credentials, preferences, and browsing history. Cookies are small text files that are stored on the user’s computer and are sent back to the server on subsequent requests. Cookies can be used to personalize the user experience, track user behaviour, and provide targeted advertising.
Web applications use security measures to protect user data and prevent unauthorized access. These security measures include SSL (Secure Socket Layer) encryption, firewalls, and authentication mechanisms such as usernames and passwords.
