Monthly Archives: December 2011

Switch on With jQuery’s New Event Methods

The latest version of jQuery, version 1.7.1 at the time of writing, has completely overhauled its event system, giving us just two new methods to replace all existing event methods such as bind(), live() or delegate(). Event handling has been a core part of jQuery for a long time, but over the years the jQuery event landscape has flourished and grown, with successive releases increasing the number of methods for handling events. The new event methods on() and off() condense these different methods...

Common C# Build-Time Errors: Part I

Here’s the situation: You’ve written a program in C#. You’ve checked the flowcharts, examined your coding and developed your user interface. You’re anticipating that everything will flow as smooth as silk. You’re ready to create a build of the program and, instead of seeing a beautiful, efficient result, you get several (often incomprehensible) error message. How did this happen? Here are SOME ways that these errors occur: #1 Undeclared Variables ... C# throws an error message on undeclared...

A Look at Responsive Web Design

Responsive web design is widely thought of as a design trend, but it’s much more than that. It is an approach to web development that allows a website to break itself down smoothly across multiple monitor sizes, screen resolutions, and platforms, be it a computer, tablet or mobile device.  It allows the developer to create a site that is optimized for each platform, both in navigation, readability and load time. In this tutorial, we take a look at what responsive web design entails for the developer....

The XREF table for MySQL

The XREF, or cross reference table, is a database table that links records together. These tables are very good for normalization in your database. I almost always use an xref when I need an many to many relationship. Usually XREF tables have only two columns with no Primary Key. That's right, the two columns together make them unique. They are both Foreign Keys to other tables. A real life example of this would be in any standard CRM. Let's go over this example right now. Many CRM's could have a table to store...

The Usefulness of the document.createElement()

The new HTML5 Markup Language has introduced several new element features not available in HTML4, for example elements like header, section, nav, footer, aside, and article. Where these new tags will work in Opera, Safari, Chrome or Firefox they will not function in Internet Explorer (version 8 and earlier). The problem is that due to the way parsing works in IE, these elements are not recognized properly. This tutorial explains how to get HTML5 tags to work in IE8 and its earlier releases. It is possible...

Designing a Clean Website Part 2: The Layout

Last week we discussed how important navigation is to a website and how developing an interactive navigation system will help give a clean, minimalist website a bit of character and make it feel modern and current.  It’s too easy to make a clean website look dated and as though it were developed in the 90’s, so by injecting modern user interfacing techniques that are popular today you’re able to put the viewer at ease and reassure them that the content is fresh and up to date. We’ll pick up where...

PHP User Survey Part V: Administration Layer

In the last piece on our PHP online user poll, we look at the administrative service and how the site supervisor enters, deletes and manages the poll data. The first poll administrative page checks if the administrator is logged in. You can choose from Session variables or Cookies to check the site administrator login status. Once the application has confirmed the identity of the site administrator, the page lists the available polls. The first step is to use the class methods and variables in the class.polls.php...

Scan for Website Vulnerabilities with WebScarab

Web applications remain the largest security risk for any company. The reason is two-fold. First, most software services have moved to a web based environment giving malicious hackers a much larger landscape to attack. Second, most organizations put a majority of their resources, i.e. dollars and manpower, into network and perimeter security leaving the web unguarded. In most cases, it is up to the web developer to secure sites as best they can. Those who know how to patch known vulnerabilities in...

PHP User Survey Part IV: Presentation Layer

So far in this series, we have developed the data layer (database tables) and the business layer (PHP methods) for manipulating the data. In this piece, we will look at the presentation layer that is used to display the poll question and poll results. The HTML header will check for the presence of a cookie (in case the user has voted previously) and refresh the page if it has timed out. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">...
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