Have you ever found yourself wishing you could keep your client-side code readable and more importantly debuggable even after you’ve combined and minified it, without impacting performance? Well now you can through the magic of source maps.
Last year, I did a quick 5 min presentation on some of the features available in Modernizr for Web Directions What Do You Know event. From there, Sitepoint & Learnable’s Kevin Yank asked me to put together a short course for learnable.com based on the presentation. So after working on the occasional weekend I put it all together and got it launched just before xmas 2011. Continue reading
So the other day it hit me that since iOS safari supports contenteditbale it should surely have support the clipboard events and other handy bits and pieces. Like any good hacker I created a testcase to find out basic support of events and getting selection range values, and as expected the support is pretty good. Let’s dive deeper. Continue reading
Here’s a super awesome trick I had no idea about until someone pointed out you could do this.
addEventListener can take an object as a second argument that will look for a method called
handleEvent and call it! No need for binding “this” so it will pass around the context correctly, the context is the object you’ve just set as the event listener callback. Continue reading
The other day I was writing some updates and improvements for Modernizr, one to detect for generated content support and two to improve stylesheet and element injection. Modernizr already in a few places inserts a stylesheet and a corresponding element to do some tests e.g.
css3transforms and a few others. All this happened multiple times; each test would inject an element and an inline style element, do its test then remove both elements. All this happens while the page is loading and as you can see the more tests that involve these steps exponentially grow the number of times it needs to touch the DOM. Continue reading
Ever wanted to remotely access the DOM of a mobile device so you could make changes, test ideas and generally just have a bit of fun. I know I have and I’ve been hacking to create a proof of concept piggy backed on the development of two great projects. The first is Remy Sharps awesome little jsconsole web app that lets you do a bunch of cool stuff using a simple yet elegant interface. The second is a Firefox plugin that allows Firefox to act as a WebSocket server and receive and delegate messages sent from a client. Continue reading
console.log() method serves a great functional purpose to write messages to the developer console. But did you know the console object has around twenty other methods you can use? I rarely see developers tapping into the extra power the console provides other than using it as a non-blocking alert. Let’s change that. Continue reading
Filesystem access has been a pipe dream for web developers for many years. With the ever evolving complexity of web apps and their need to potentially process large amounts of data, filesystem access is the next evolutionary step in order to push web apps to the next level. Thankfully, smart people have been thinking about these issues and defining new and useful specifications that fill those gaps. Eric Uhrhane of Google has been working on the working draft of the File API: Directories and System specification which defines a set of APIs to create a sandboxed filesystem where a web app can read and write data to. Continue reading
Recently I wrote an article for A List Apart about Forward thinking form validation and I introduced a script I wrote that emulates some of the new HTML Forms chapter functionality in older browsers, allowing a developer to use all these new features and have it work the same across the board. Continue reading