Applications of Web Programming


Learning Intentions

  • Understand the core concepts and applications of web programming, including interactive websites and their key features.
  • Comprehend Progressive Web Apps (PWAs), their benefits, and technical components.
  • Recognize the basic principles and importance of e-commerce websites in modern digital business.

Syllabus Outcome

SE-12-03: analyses how current hardware, software and emerging technologies influence the development of software engineering solutions

Lesson Activity

Self-Marking Quiz

Web programming is fundamental to various online services, from simple blogs to complex e-commerce platforms and progressive web apps (PWAs). Understanding these applications is essential for anyone interested in developing web-based software solutions, as they represent the core of what makes the web an interactive and functional space for both users and businesses.

Web programming is creating dynamic and interactive websites that users can access through web browsers. Unlike static websites, which display the same content for all users, web programming allows developers to create websites that respond to user interactions and adapt to their inputs. This adaptability is crucial in modern digital environments where user experience (UX) and user engagement are paramount.

In today’s world, the internet is more than just a place to find information—it’s a space where people connect, share, and interact in real time. Websites are no longer just static pages filled with text and images; they’ve evolved into interactive platforms where users can do things like fill out forms, watch videos, chat with customer support, and even play games. This shift from static to interactive websites has changed how we experience the web, making it more engaging and fun.

Interactive websites do more than just display information. They respond to what you do—whether you’re clicking a button, typing in a search bar, or scrolling through a page. This makes the experience more personal and enjoyable because the website feels like it’s working just for you.

In a world where so many websites are competing for attention, creating an interactive site can really make a difference. It helps keep visitors interested, makes the site easier to use, and can even encourage people to come back again and again.

Using an interactive element, let’s discover more about Interactive Websites:

  • User Engagement: Interactive websites allow users to engage with content rather than passively consume it. Features such as forms, quizzes, games, and multimedia elements encourage user interaction, making the website more engaging and memorable.
  • Dynamic Content: These websites can change content in real time based on user actions. For example, personalised recommendations on e-commerce sites or customised dashboards in web applications are all powered by the interactive capabilities of the website.
  • Responsive Design: A key aspect of interactive websites is their responsiveness. They must be accessible and functional across various devices and screen sizes. Responsive design ensures that users have a consistent experience, whether they are on a desktop, tablet, or smartphone.
  • Real-Time Communication: Many interactive websites offer real-time communication features, such as chatbots, messaging services, and live customer support. These features help in providing instant responses to user queries, enhancing the overall user experience.
  • Multimedia Integration: Interactive websites often incorporate various forms of multimedia, such as videos, animations, and audio clips. This not only enriches the user experience but also helps in conveying information more effectively.
  • Forms and Data Collection: Forms are an essential feature of interactive websites, allowing for data collection from users. This data can be used to personalise the user experience, for instance, by tailoring content or products to the user’s preferences.
  • Accessibility: Ensuring that a website is accessible to all users, including those with disabilities, is a critical consideration. This includes the use of assistive technologies, like screen readers, and designing interfaces that are navigable by all users, regardless of their physical abilities​.
  • JavaScript: The backbone of interactivity on the web, JavaScript allows for the creation of dynamic content, interactive forms, animations, and more.
  • AJAX: Asynchronous JavaScript and XML (AJAX) enables web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes.
  • APIs: Application Programming Interfaces (APIs) enable websites to communicate with other systems, allowing for real-time data integration and enhanced functionality​.
  • HTML5 and CSS3: The latest versions of HTML and CSS provide advanced features for building rich, interactive web pages with sophisticated layouts, animations, and multimedia content.
  • User-Centred Design: Focus on creating a seamless user experience by considering the needs and behaviours of your target audience.
  • Performance Optimisation: Ensure that your website is optimised for speed, as slow-loading pages can lead to high bounce rates and poor user experience.
  • Security: Implement robust security measures to protect user data, especially when handling sensitive information through interactive forms and APIs.
  • Testing: Thoroughly test your website across different browsers, devices, and user scenarios to ensure that it functions correctly and delivers a consistent experience​.

Other examples of interactive features found on websites:

PWA’s will be covered in more detail later in the subject. Below is to give you a brief introduction and also know at the end of this subject you will develop your own progressive web app.

Progressive Web Apps (PWAs) are a hybrid between traditional web pages and mobile applications. Built using standard web technologies like HTML, CSS, and JavaScript, PWAs function similarly to native apps but are accessible through web browsers. They are designed to provide a seamless user experience, regardless of the platform or device being used.

Key Benefits:
  • Offline Accessibility: PWAs are equipped to work offline or on unreliable networks. This is achieved through the use of service workers, which manage caching and background processes, allowing the app to function even without an internet connection.
  • Responsive Design: PWAs are built to be fully responsive, meaning they adjust their layout and functionality to fit any screen size. This ensures that users have a consistent experience whether they are using a desktop, tablet, or mobile device.
  • App-like Experience: PWAs offer an experience that closely resembles that of native apps. This includes features like push notifications and the ability to install the app on a user’s home screen without needing to visit an app store. PWAs can also integrate with the operating system to provide additional functionality, such as file handling and data sharing between apps.
Technical Components:
  • Service Workers: These are scripts that operate in the background, enabling the PWA to handle tasks like offline functionality and background synchronization. Service workers are essential for ensuring that the app remains responsive and functional even when the network is down.
  • Manifest File: The manifest file is a JSON file that provides metadata about the app, such as its name, icons, and theme colours. This file is crucial for the app’s appearance and behaviour when installed on a device.
  • Progressive Enhancement: This design approach ensures that the core functionality of the PWA works across all browsers and devices, while additional features are layered on for those with more advanced capabilities. For example, a basic form might work without JavaScript, but it can be enhanced with client-side validation on compatible devices.

Best Practices:

  • Cross-browser Compatibility: It’s important to test your PWA across different browsers to ensure it functions well everywhere. This includes older browsers that may not support the latest features.
  • Accessibility: Accessibility is crucial to make sure that your PWA can be used by everyone, including people with disabilities. Using semantic HTML elements and ensuring your app supports various input methods (e.g., touch, keyboard, mouse) are key practices.
  • Performance: PWAs are expected to be fast and responsive. Performance can be enhanced by minimising load times, optimising code, and ensuring that the app remains functional even under poor network conditions.
Examples:

PWAmp

PWAmp is a desktop music player that plays local and remote audio files.

Try AppView Source Code

Wami

Wami can apply a sequence of image manipulation steps such as cropping, resizing, rotating, or adding effects on batch of images.

Try AppView Source Code

E-commerce, or electronic commerce, extends beyond merely buying and selling goods and services online; it encompasses the transfer of funds and data over the internet, relying on technological platforms such as websites, mobile applications and social media to facilitate these transactions, thereby transforming traditional commerce into a dynamic digital marketplace accessible to anyone with an internet connection.

Furthermore, understanding e-commerce is of paramount importance for future software engineers, as they will be responsible for designing and maintaining the technological infrastructure that powers these digital marketplaces, including secure payment systems, user-friendly interfaces, and the seamless integration of various online platforms. Since e-commerce platforms often rely heavily on content management systems (CMS) to handle and organise vast amounts of data and digital content, gaining expertise in content management systems (which we will explore in a future lesson) is essential for developing efficient, scalable and dynamic e-commerce solutions that meet the demands of today’s global market.

Source: What Is E-Commerce? Definition, Types & Getting Started – Forbes Advisor Australia

Transcript

E-commerce offers numerous business opportunities, whether you’re already a business owner or interested in becoming one. Here’s what you need to know about e-commerce.

E-commerce refers to the selling and buying of products or services online. You have two main options to start selling your products online: 1) Run your own e-commerce website or 2) List your products on an online marketplace.

Having your own e-commerce website is like owning a physical store. When online shoppers visit your website, they can only browse through your products. Some of the most popular e-commerce website builders are Shopify, BigCommerce, and Weebly. On the other hand, listing your products on an online marketplace is like selling in malls or in grocery stores. Shoppers can browse through various products from different sellers to choose the best deal. Among the popular online marketplaces are Amazon, Alibaba, and eBay.

E-commerce has four main types. For example, an online retail store that sells directly to end consumers can be done both on an e-commerce website and an online marketplace. Another example is a company that sells products or services directly to another company. Businesses that sell to other businesses usually sell their offerings through their own website. A freelancer might offer writing services to business owners through websites like Upwork or Fiverr. Lastly, a consumer might sell new or pre-loved products to another consumer through websites like eBay or Etsy.

Another aspect to consider with e-commerce is the business model because it will determine how you’ll generate income from selling online. There are different types of e-commerce business models.

One model allows you to accept customer orders without keeping actual products in stock. Rather, a third party fulfills and delivers the order to the customer on your behalf. Another model is a subscription service, which lets you send products to a customer over a specific time — weekly, monthly, or yearly — depending on your customer’s chosen plan. This model works well for the food, fashion, health and lifestyle, and entertainment industries, as seen with companies like Netflix and Spotify.

Wholesaling is the practice of selling goods in bulk to retailers at discounted rates. The retailer then sells the goods to end consumers at profitable prices. Retailing, the opposite of wholesaling, involves selling goods in smaller amounts, or even by piece, directly to end consumers. You can earn through this model by adding a markup to the discounted items you got from wholesalers.

In another model, a third-party manufacturer produces the product on behalf of your brand. All exclusive rights are granted to your business, entitling you to sell the produced materials as your own.

To succeed in e-commerce, it’s crucial to determine your business model to find out what you can manage and how to make profits. Figure out the focus of your business through product and niche research. Determine where you will sell: an e-commerce website, via an online marketplace, or both? Know your target audience so you can deliver your messages to the right people. Register your e-commerce business and brand name. Apply for all the necessary licenses and permits to make your business legal. Lastly, prepare a solid business plan that includes the financial and inventory management aspects of your store.

Results

HD Quiz powered by harmonic design

#1. What is the primary difference between static websites and those created through web programming (dynamic)?

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#2. Which of the following is NOT mentioned as a key feature of interactive websites?

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#3. Which technology enables PWAs to work offline or on unreliable networks?

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#4. What file provides metadata about a PWA, such as its name, icons, and theme colours?

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#5. Which of the following is a key benefit of Progressive Web Apps (PWAs)?

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#6. What are the two main options for selling products online in e-commerce?

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#7. What e-commerce business model allows you to accept customer orders without keeping actual products in stock?

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#8. In what e-commerce model does a third-party manufacturer produce products on behalf of your brand?

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#9. Which of the following is an example of a Business-to-Business (B2B) e-commerce transaction?

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#10. What does PWA stand for in web development?

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