JavaScript

Introduction to Node.js

With the software platform, Node.js, you can use JavaScript server-side and benefit from the asynchronous, event-based programming and the range of options for developing server applications. In this Node.js tutorial, we give you an overview of the program’s modular structure, explain how you can install program modules at any time using the integrated package manager, NPM, and use them to set up your first Node.js-based web server. [...]  

Module tests in software development

Module tests are one of the most effective methods of identifying as many errors in the source code as possible early on in the software development process. The special feature: the smallest isolatable components of a program are placed in a neutral test environment. If errors appear, it’s obvious they are occurring in the module being tested, which makes them easy to correct. [...]  

Browser fingerprints: tracking without cookies

In recent years, so-called browser fingerprinting has established itself as a tracking method that doesn’t rely on the use of cookies. Web servers capture different characteristics from visitors’ browsers and determine their digital fingerprint based on them. They enable visitors to be recognised at a later date. While some information is automatically transmitted, it is mainly active elements such as Flash animations or JavaScript applications that provide crucial information. [...]  

The most important meta tags and their functions

Meta tags are used by website owners to specify metadata in HTML documents. The coded information integrates with web browsers and search engine crawlers to enhance the searchability of a website. But which meta elements are actually required by user agents to improve processing? And how can you use metadata to boost your website’s ranking in the search results? [...]  

jQuery tutorial: introduction and first steps

By using the JavaScript library, jQuery, you can easily customise HTML elements. Well-known CSS selectors such as the element selector or the .class selector help you to choose the desired content and manipulate it using various actions. In addition, lines of code can be written that respond to how website visitors navigate and what search terms they enter, and then automatically execute predefined reactions. In our jQuery tutorial you will get an introduction to jQuery and the basics of how to use the library. [...]  

Spring framework: A backbone extension of Java

Java doesn’t play a big role when it comes to simple web development, although the programming language has still maintained a strong appeal. The language, which is no longer supported by browsers, has established itself as an efficient solution finding tool, especially when designing backends for business applications. The Spring framework contains various modules that serve as a basis for complex web and desktop applications and significantly simplify programming when using Java. [...]  

Learning HTML: a beginner’s tutorial

In times of content management systems and website construction kits, you might think it’s a waste of time learning HTML. But if a page doesn’t work for some reason or if you plan to install dynamic elements, you won’t be able to continue without having knowledge of this web language. In our detailed HTML tutorial, we introduce you to the basic features of the markup language, including numerous code examples. [...]  

SVG format: how to embed SVG vector graphics

Increasing the size of a raster graphic beyond its actual resolution comes with a loss of quality, which can lead to serious problems in your responsive web design, including increased loading times and a lower ranking in search engine results pages. Optimizing GIF, PNG, and JPG images to display properly across different devices can rapidly turn into a mammoth task. Because of this, vector graphics in the SVG format are becoming increasingly popular. But what is behind the technology that was issued as a standard in 2001? And how do you integrate flexible image files into your web project? [...]  

Website optimization: tips and tricks for more speed

Many website operators fall short when it comes to keeping up with the creation and maintenance aspects of their sites. Despite responsive design, many websites still have loading times that are too long, which can prove off-putting for visitors. Our guide reveals what you can do to optimise the performance of your website. [...]  

Protecting your e-mail address: how to do it

Spam robots, so-called harvesters, consistently search the internet for e-mail addresses that can be used for unlawful advertising, phishing e-mails, and spreading viruses, worms, and Trojans. You’re recommended to have your contact details on your website, but how do you stop them from being misused? This article gives you advice on how to protect your e-mail address. [...]