Rob Gravelle

As the Web transitions from a mere presentation medium to an application platform, developers are now encountering many of the same challenges that they faced while building desktop apps – along with a few new wrinkles. One such challenge was how best to structure the various components of a system. This eventually gave rise to […]

WordPress’s outstanding versatility has catapulted it far beyond its humble beginnings as a blogging platform. It appeals both to the novice and expert developer, allowing him or her to create anything from simple static sites to large-scale eCommerce systems. I have witnessed the best and worst features of WordPress first-hand over the years. Most recently, […]

Google’s AMP project aims to dramatically improve the performance of the mobile Web. It’s a web standard built on existing web technologies whose primary focus is on static content. In the Making AMP Page Elements More Responsive tutorial, we learned how to make individual elements more responsive using the layout=”responsive” attribute. AMP pages also permit the […]

WordPress (WP) has evolved into an extremely popular content management system. As a result, it is being used for building all kinds of websites. Many of these include file upload fields in registration and data import forms. In this tutorial, we’ll be getting a feel for working with upload fields by adding a file upload […]

Perhaps there is no greater bane to a web developer’s existence than the same-origin policy. In the Fetch Cross-domain Content Using a PHP Proxy article, I presented one way to serve web content from another domain. Now I’d like to share a relatively new technique that utilizes the JavaScript postMessage() method. Why Browsers Limit Data […]

Excel is one of the most popular formats for viewing and working with tabular data. For that reason, it only makes sense to give your visitors the option of downloading website data as an Excel spreadsheet. Many sites have opted for the simpler Comma Separated Values (CSV) text format, fearing that Excel files could only […]

If you’ve ever tried to fetch a resource outside of your domain via an Ajax call, you probably got this error message: XMLHttpRequest cannot load http://www.domain.com/path/filename. Origin null is not allowed by Access-Control-Allow-Origin. This error was triggered by the Same-origin policy. It permits scripts running on pages originating from the same site to access each […]

I’ve talked about Google’s AMP project in the What are Accelerated Mobile Pages (AMP)? and Creating AMP Content articles. Today I’d like to highlight some of the differences between Accelerated Mobile Pages (AMP) and Responsive Web Design (RWD) as well as how to achieve responsive layouts in your AMP pages. AMP vs. RWD While both Accelerated Mobile […]

The Revolutionary HTML5 Online Website Generation Tools: SILEX, Weebly, and Wix and Best HTML5 Website Builders for Webmasters in 2017 articles listed just a few of the best online website builders in 2017. In this installment, we’ll be focusing on sites specifically devoted to eCommerce, which is one of the most important types of websites […]

If you’ve ever been looking to create a web-based location search using only front-end code against the Google Maps API, I’ve got just the thing: Bjorn Holine’s jQuery Store Locator plugin. It works off of KML, XML, and JSON data using jQuery and the Handlebars template engine. In the Configure Location Data and the Google […]

As mentioned in Exploring Online Webmaster Tools, one of the coolest trends in the World-Wide-Web is the emergence of online tools. Instead of downloading an app to your device, online tools are provided on a subscription basis. The cost can vary quite a bit but tends to be lower than the traditional purchase or download […]

jQuery’s powerful selectors are considered to be one of its best features. Not only do they closely resemble natural CSS, but jQuery beefs them up with a bunch of their own pseudo-class selectors. The icing on the cake is that jQuery’s pseudo-class selectors are fully extendable. In today’s tutorial we’ll learn how to assign functions […]