HTML5 includes a host of new input elements, such as the output tag. Using the output tag in conjunction with the "oninput" event listener, you can create simple or complex Web page calculators, giving the user instant results. The output tag allows you to build forms using semantic markup, since the element is specifically designed for displaying calculation results. In this tutorial we will create a simple Web page calculator to demonstrate using the output element. Many of the new input elements...
A memorable Al Pacino line from the popular sports movie “Any Given Sunday” states that, in essence, “Life is just a game of inches”. In other words, success in any endeavor can depend on the smallest details, because they can end up having a major impact. When it comes to SEO, I am constantly amazed at how paying careful attention to tiny, often overlooked factors can significantly assist in boosting a website’s online presence, thus gaining its owner a competitive advantage. As web developers,...
With HTML5, you can set any of your Web page text elements to be editable by users. Using the "contenteditable" attribute, you can instruct the browser to allow users to insert, delete and alter the text your page contains as they view it. There are many possible uses for this technique, such as allowing users to customize the way your pages appear to them each time they visit. In this tutorial, we will run through the basics of letting users edit your text content, including saving their edits for future...
HTML5’s native audio element will be a great way to avoid having to rely on third party plug-ins like QuickTime and Flash. The latest web browsers like Chrome 10+ and Firefox 3.6+ are already there with imbedded javascript libraries which provide methods and properties for manipulating the <audio> element. In this post, we’ll examine a few of the most important methods and discover ways to use Javascript to run audio files. NOTE: Although this post focuses on the Audio object, these methods...
Moving website pages is not only a traumatic experience but it actually does your website more harm than good when not done right. The Google Search algorithm uses over 200 elements to rate your website and one of these elements is how reliable your website pages are. When a “Page Cannot Be Found” message is displayed, this is one mark less for your website which means that your search ranking will likewise be affected. If you need to redirect your Web pages, then you need to do it in a way that search...
With HTML5 you can embed SVG (Scalable Vector Graphics) markup directly into your pages. In this tutorial we go through the process of including a simple SVG element in an HTML page. We will also run through the technique for altering SVGs in JavaScript in cases where this is preferable to using the HTML5 canvas element. With HTML5, developers have a choice between the canvas element and inline SVGs. Which one is preferable really depends on the details of a project. In general, SVG brings the advantage...
Offline storage is one of the most anticipated features of HTML5. With users browsing to your pages and accessing your Web apps on various devices, often with limited connectivity, the Application Cache utility could prove to be a serious advantage. With HTML5 App Cache, you can instruct supporting browsers to cache copies of certain files. Once these files have been downloaded they will then be accessible offline. In this tutorial we will work through a simple example of caching a page, including...
Lots of excitement surrounds HTML5's native audio element. It promises cross browser standardized support for playing audio clips embedded directly in our web pages. With this new element, gone are the days of including a third party plug-in like Flash, QuickTime, or Silverlight. Of course, we're not quite there yet. Currently, the <audio> element is supported in these browsers: iOS 4+, Android 2.3+, Opera Mobile 11+, and As web developers, we must be careful to include fallback support...