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Dave Ward

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Top Stories by Dave Ward

As jQuery’s popularity in the .NET community has risen over the past year, one recurring theme I’ve seen is the desire to refactor away the details of using it to call ASP.NET AJAX services. Whether through helper function or specialized jQuery plugin, I’ve seen numerous methods proposed and/or in use. Personally, the syntax never bothered me. The contentType parameter is ugly, but I have a Visual Studio code snippet for the $.ajax call and rarely think about it. That came to an end earlier this year, when I started using dataFilter. I needed to isolate my code from the “.d” issue, and wanted to take advantage of browser-native JSON parsing in Firefox 3.5 and IE8, which required a bulky dataFilter. Repeating that entire callback function in every $.ajax call was not acceptable. So, I was happy to learn that jQuery provides an excellent solution for consolidating ... (more)

A Sneak Peak at ASP.NET AJAX 4.0’s Client-Side Templating

Dave Ward's "Encosia" Blog Hot on the heels of the recent ASP.NET AJAX roadmap, Bertrand and team have released a limited preview of the new AJAX functionality coming in ASP.NET 4.0. To see how the new functionality stacks up, I decided to recreate my recent jTemplates example, using only ASP.NET AJAX and its new templating features. Eventually, I settled on using the DataView class, which offers more advanced, repeater-like functionality. Having successfully completed the exercise, I thought it seemed like something that you might find interesting too. The solution boils down to ... (more)

Improving jQuery’s JSON Performance and Security

When you’re working with JSON, performance and security are often opposing, yet equally important concerns. One of these areas of contention is handling the JSON strings returned by a server. Most JavaScript libraries do a great job of abstracting away the details, but the underlying process has long been a frustrating exercise in compromise. On one hand, eval() is the fastest widely available method, but it is not safe. On the other hand, textual JSON parsers written in JavaScript may be much safer, but are dramatically slower. In client-side situations, where milliseconds cou... (more)

Automatically minify and combine JavaScript in Visual Studio

As you begin developing more complex client-side functionality, managing the size and shape of your JavaScript includes becomes a key concern. It’s all too easy to accidentally end up with hundreds of kilobytes of JavaScript spread across many separate HTTP requests, significantly slowing down your initial page loads. To combat this, it’s important to combine and compress your JavaScript. While there are useful standalone tools and HttpHandler based solutions to the problem already, none of them work quite how I prefer. Instead, I’m going to show you my dead-simple method for au... (more)

$(document).ready() and pageLoad() are not the same!

Recently, I’ve attended several presentations in which ASP.NET AJAX’s pageLoad() shortcut is demonstrated as interchangeable with jQuery’s $(document).ready() event. The suggestion that both methods are equivalent actually appears to be true in simple demos, but is not the case and is certain to lead to later confusion. While they seem similar on the surface, $(document).ready() and pageLoad() are very different behind the scenes. Determining the earliest point that it’s safe to modify the DOM requires a bit of black magic, and the two libraries approach that in their own unique... (more)