Implementing Drag and Drop Functions with HTML5 and JavaScript

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...

Coding Vendor Prefixes with JavaScript

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...
PHP

PHP Ad Tracker Part III: Data Object Coding

In last week’s lesson, we looked at the variables and methods we would need to interact with the advertising database tables. This week, we’ll examine the code for the data object class file and how the other parts of the site will use these methods. First, we include the database connection string information.  This information includes the database server name, cursor location and other pertinent information. Since this information is used throughout the site, it is usually stored in a separate...
CSS

Developing a Responsive Website Part 4: Finishing The Homepage Portfolio Slider

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...
RoR

5 Best Practices Before Deploying a Rails App

Starting out as a newb in anything is always tough because you never really know what "the right" way to do things are. If you are anything like me, you can easily hack your way through things and get them to work, but are always afraid that you are missing something.  Well, I've come up with my own list of best practices before I deploy a Rails application to the public. Some of these best practices are, of course, universal to any web application development effort, so I won't go deep into them - but at least...

Pushing Updates to the Web Page with HTML5 Server-Sent Events

The HTML5 Server-Sent event model allows you to push realtime data updates from the server to the browser. In this tutorial we will work through the process, with the EventSource object handling received data and writing it to the page. We will use HTML5 and JavaScript at client side, with PHP at server side. With existing models such as AJAX, the code in a Web page would continually ask the server to supply new data, but the onus was on the client to request the information. With Server-Sent requests, you...
CSS

Using Backgrounds in CSS3

With CSS3, developers and designers can utilize an enhanced range of options for Web page backgrounds. New options include the ability to use multiple background images, to specify size properties for background images, and to define background origin and clipping in terms of the CSS box model. In this tutorial we will work through various options using these new techniques, demonstrating the CSS syntax for each one. Create a Page ... Create a Web page with a single element and an area for your CSS declarations...

Embed Analytics Using the Google Analtyics API

Google Analtyics gives so much data that sometimes it becomes hard to digest. For larger sites it is easy to become so overwhelmed that you can't find the time to look up the analtyics for each page. Or maybe you have many editors for a site who don't have access to your Google Analtyics account and you want to provide them with data so they can see how well their pages are performing. With the Google Analytics API we can easily display some basic analytics right in each page.  Google offers many libraries...
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