Custom attributes are among the most significant additions for HTML5, and can play a major role in semantic Web development. In this tutorial we'll go through a practical example of creating and accessing HTML5 custom data attributes, including the necessary JavaScript functions. It was possible before HTML5 to add your own attributes to HTML elements and access them using JavaScript, but if you've ever tried it you'll know you can forget about getting your markup to validate. HTML5 provides the...
Recursion is an age old concept used in mathematics when an object is defined by other objects of the same type. A real life example would be the mirrors in a department store dressing room. If you look in the right spot, you can see both reflections repeating themselves in each other. Each iteration of your image grows smaller and smaller into infinity. In computer science recursion happens when a solution to a problem is resolved by computing smaller instances of the same problem. In JavaScript,...
Underscore.js is a tiny JavaScript utility library that makes working with some of the common data structures used in JavaScript much easier. Minified and GZipped it weighs in at less than 4Kb and where possible it delegates functionality to native browser implementations for performance. It has no other dependencies and so adds very little overhead to your total script assets. It can be used on the client or server with equal ease. Using Underscore is extremely easy; it isn’t tightly bound to the...
Anyone who has played, watched friends play, or briefly saw video games that were released in the 80’s and 90’s is familiar with parallax scrolling. Think of games like Mario Bros, Streets of Rage, Kung Fu, Turtles in Time, or the original parallax scrolling game, Moon Patrol. Parallax scrolling is when there are multiple layers of images all moving at different speeds, causing a 2D image to have a 3D-like effect. Why am I talking about retro video games on a web development site? Well, the simple...
A challenge that many website owners face is how to supply continuously fresh content for new and repeat visitors to peruse. It can be a very time-consuming task to manually upload regular updates. Fortunately, there is an easy way to showcase free, readily available news content on a wide variety of topics. We will examine a quick and effective method of incorporating RSS (Really Simple Syndication) coding in order to add news content to any site. First, let’s look at what RSS is, and how it works....
With HTML5 and JavaScript, you can implement native drag and drop functions within the Web browser. This is one of the emerging HTML5 tools that promises to make websites more interactive without relying on additional technologies such as Flash. In this tutorial we will create a simple page with images the user can drag and drop into designated areas. Create an HTML5 Web Page ... Create an HTML file for your drag and drop function. Use the following basic outline, with sections for JavaScript and CSS...
Savvy web developers often use vendor prefixes to try out the latest browser styles before the styles have been approved by the W3C and turned into a standard. By specifying a browser or vendor prefix within your CSS stylesheet or style property within a JavaScript function, you can gain control of how an element will render within a specific browser (Chrome, Firefox, IE, etc.). This gets you access to these browser’s newest and coolest styles and elements. This article will illustrate how to...
This week we're going to finish up the portfolio slider on our homepage that we have already started. At this point, if you view your index.php file and scroll down to the secondary screen it should look something like this. We’re close, all we have to do now is plug in our jQuery elements and then add some CSS to make our secondary portfolio slider screen responsive. Go ahead and download the Java files you'll need from here, keep the js directory in your root folder and check out what out the image below...