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18
HTML, CSS, and JavaScript — the three building blocks of the web
Frontend · 8 min
A web page is built from three languages each with its own role: HTML gives structure, CSS gives appearance and JavaScript gives behavior. Understand the division and you write code that is easier to maintain.
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Frontend and backend — where the code runs and how they talk to each other
Architecture · 8 min
A web application has two sides: frontend which runs in the user's browser and backend which runs on the server. Understand the division what an API is and how data flows between them.
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Version control with Git — work safely and together
Tools · 7 min
Git is the standard tool for version control. It saves the history of your code lets multiple people work together without overwriting each other and gives you the ability to go back if something goes wrong.
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Responsive design — one page that works on all screens
Frontend · 8 min
Responsive design lets the same page adapt to phone, tablet and computer. Understand flexible units, media queries and why you should build from the small screen up.
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Accessibility in depth — a web everyone can use
Accessibility · 9 min
Accessibility means that users with reduced vision, hearing or movement can also use your page. It is based on four principles and a number of concrete habits you build in from the first line of code.
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JavaScript and DOM – bring the page to life
Frontend · 8 min
JavaScript becomes interesting when it meets the DOM – the browser's model of the page. Understand how to react to events, change content and fetch data without reloading the page.
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Web security and OWASP — the errors attackers look for
Safety · 10 min
Safety is part of the craft, not an extra layer at the end. OWASP publishes a widely recognized list of the most critical risks in web applications. Understand the most frequent — broken access control, injection and misconfiguration — and the concrete habits that keep them out.
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Web APIs in depth — HTTP, REST and status codes
Architecture · 9 min
An API is the contract your systems exchange data through. Understand HTTP methods what the REST style entails what the status codes tell and how to design an API others can use without guessing.
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GDPR for web developers — privacy built into the code
Legislation · 8 min
If you build websites you handle personal data and then the data protection regulation applies. Understand what counts as personal data when you may set cookies how consent should be obtained and how you build a site where the user's rights can actually be fulfilled.
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The birth of the web — the history of web development
History · 11 min
Web development is a craft just over a human lifetime, but it has changed faster than most trades. Follow the path from Tim Berners-Lee's proposal in 1989 through the first static pages, browser wars and the invention of JavaScript to today's dynamic web applications, frameworks and standards.
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Databases and data services — the interplay between frontend and data
Databases · 9 min
Almost every web solution needs to store data that survives a browser restart. Understand relational databases' tables and keys, what SQL and CRUD cover, the difference between relational and NoSQL databases, and how a data service is secured when the frontend requests data.
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CMS in practice — from plugin to custom theme
CMS · 8 min
Few websites are built entirely from scratch today — most run on a content management system (CMS). Understand what a CMS really solves how themes and plugins extend it what a headless CMS is and why maintaining and updating a CMS is a security task not just a technical detail.
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Server-side programming — the language that runs behind the scenes
Backend · 8 min
Behind Every Web API and Every Dynamic Page Lies Code Running on a Server — Invisible to the User but Crucial for Data to be Safe and the Page to Respond Quickly. Understand Why HTTP is Stateless, How Sessions and Tokens Solve This, Why Secrets Belong in Environment Variables, and What Affects a Web Server's Performance.
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Digital trade — webshops cookies and right of withdrawal
E-commerce · 8 min
A web shop is more than a catalog of goods — it is a legal agreement entered into by distance sales with rules that bind both the code and the business. Understand the web shop's basic elements how cookies and tracking are used in commerce what the consumer's 14-day right of withdrawal entails and what the new rules on withdrawal directly on the site require.
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Project organization and agile methods — Scrum and Kanban
Method · 9 min
Web development is rarely done alone. Understand why agile methods have become the standard instead of a fixed plan laid out a full year in advance, what the Scrum Guide's roles, events and artefacts cover, how Kanban offers itself as an alternative or supplement, and why version control is the backbone of collaboration.
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Performance and Core Web Vitals — a fast web solution
Performance · 9 min
A slow site loses users regardless of how well built it is underneath. Understand the three Core Web Vitals — LCP INP and CLS — what each metric actually describes which thresholds count as good and what concrete actions move the numbers in the right direction.
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Job search, CV and portfolio – from student to web developer
Career · 8 min
A professionally strong CV and a well-maintained portfolio are often what decides whether you get an interview. Understand why a portfolio says more than a CV alone, what a professional CV should contain, how a targeted application is built on a company analysis, and what the different career paths in web development look like.
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The journeyman's exam in web development — from blank task to approved solution
Education · 8 min
The final exam is the education's last test, where you bring together what you have learned in one finished solution. Understand what the project assignment requires according to the training regulations, what the project documentation must contain, what the oral part is about, and how best to prepare in the time leading up to it.
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