HTML By Suraj Kumar Sharma Part 8

Learn HTML: Advanced Concepts - Part 7

42. Web Accessibility

Web accessibility ensures that websites are usable by people with disabilities. Key practices include:

• Alt Text: Providing descriptive text for images.
• Semantic HTML: Using appropriate HTML elements to convey meaning.
• Keyboard Navigation: Ensuring all interactive elements can be accessed using a keyboard.

Example of adding alt text to an image:

                <img src="logo.png" alt="Company Logo">
            

43. Web Security Basics

Understanding web security is crucial for protecting user data and your website. Key concepts include:

• HTTPS: Using SSL certificates to secure data transmission.
• Input Validation: Validating user input to prevent attacks like SQL injection.
• Cross-Site Scripting (XSS): Preventing unauthorized scripts from running in a user’s browser.

Example of using HTTPS:

                <link rel="stylesheet" href="https://example.com/styles.css">
            

44. Version Control with Git

Version control helps track changes in code and collaborate with others. Key concepts include:

• Repositories: A directory for storing your project files and version history.
• Commits: Saving changes to your repository with a descriptive message.
• Branches: Working on features or fixes independently from the main codebase.

Example of basic Git commands:

                git init         # Initialize a new Git repository
                git add .        # Stage all changes
                git commit -m "Initial commit"  # Commit changes
            

45. Deployment and Hosting

Deploying your website involves moving it from your local environment to a live server. Key options include:

• Shared Hosting: Cost-effective, but limited resources and control.
• Virtual Private Server (VPS): More control and resources than shared hosting.
• Cloud Hosting: Scalable resources based on demand, ideal for growing websites.

Example of deploying a website using FTP:

                ftp> open yourserver.com
                ftp> put index.html
            

46. APIs and Web Services

APIs (Application Programming Interfaces) allow applications to communicate. Key concepts include:

• RESTful APIs: APIs that follow REST principles for easy communication over HTTP.
• SOAP: A protocol for exchanging structured information in web services.
• API Authentication: Securing APIs with tokens or keys.

Example of making a GET request to an API:

                fetch('https://api.example.com/data')
                    .then(response => response.json())
                    .then(data => console.log(data));
            

47. Mobile Development

With the increasing use of mobile devices, understanding mobile development is essential. Key topics include:

• Responsive Web Design: Creating websites that adapt to different screen sizes.
• Mobile-First Approach: Designing for mobile devices before scaling up to larger screens.
• Native vs. Hybrid Apps: Understanding the differences between developing apps for specific platforms versus using frameworks like React Native.

Example of a viewport meta tag for mobile responsiveness:

                <meta name="viewport" content="width=device-width, initial-scale=1.0">