John Resig - Using Waifu2x to Upscale Japanese Prints
In my spare time I’ve been working on a database of Japanese prints for a little over 3.5 years now. I’m fully aware that I’ve never actually written about this, personally very important, project on my blog — until now. Unfortunately this isn’t a post explaining that project. I do still hope to write more about the intricacies of it, some day, but until that time you can watch this talk I gave at
John Resig - Computing with JavaScript Web Workers
Web Workers are, undoubtedly, the coolest new feature to arrive in the latest version of web browsers. Web Workers allow you to run JavaScript in parallel on a web page, without blocking the user interface. Normally in order to achieve any sort of computation using JavaScript you would need to break your jobs up into tiny chunks and split their execution apart using timers. This is both slow and u
John Resig - JavaScript Function Call Profiling
With jQuery 1.3.2 out the door I’ve been looking for more ways to profile and optimize jQuery. Previously I did a survey of jQuery-using sites to figure out which selectors they were using. This led to the construction of the new Sizzle Selector Engine which targeted those selectors for improvement. Additionally, I constructed a deep profiling plugin for jQuery which helped to spot methods that we
John Resig - Talk: Performance Improvements in Browsers
I gave a talk last week at Google (at the request of the excellent Steve Souders) all about the performance improvements, and new APIs, that are coming in browsers. I cover the new browsers, their JavaScript engines, their JavaScript performance, and then do a whirlwind tour of their new DOM methods and some of their new CSS APIs. Posted: February 5th, 2009 Subscribe for email updates 36 Comments
John Resig - Talk: The DOM is a Mess
I gave a talk last week at Yahoo (at the request of the YUI team) all about the DOM. I outlined some of the reasons why the current situation is such a mess, outline some strategies for working around it, and then give some examples of real world code that’s being implemented in libraries today. Posted: February 2nd, 2009 Subscribe for email updates 56 Comments (Show Comments) Comments are closed.
John Resig - JavaScript Pretty Date
One method that I’ve been wanting for quite a while now was a simple way to format old JavaScript dates in a “pretty” way. For example “2008-01-28T20:24:17Z” becomes “2 hours ago”. Here’s some more examples: prettyDate("2008-01-28T20:24:17Z") // => "2 hours ago" prettyDate("2008-01-27T22:24:17Z") // => "Yesterday" prettyDate("2008-01-26T22:24:17Z") // => "2 days ago" prettyDate("2008-01-14T22:24:1
John Resig - Ultra-Chaining with jQuery
We were having a discussion, the other day, on the jQuery-dev mailing list concerning style and jQuery code. There was some discussion about how it could be improved. One of the points discussed was concerning the use of callbacks and jQuery(this). Callbacks (passing in a function as the final argument to a jQuery method, to be called later) are used all throughout jQuery code. It’s a rather core
John Resig - jQuery.embrace().extend();
These past couple days have been a blast. jQuery Conference this past Sunday followed by 3 days of The Ajax Experience here in Boston. I ended up giving 9 talks and was on 2 panels in 3 days – completely exhausting. We were able to get video of a bunch of the jQuery Conference so we should be posting it soon. It was great getting to see the whole jQuery team again. We talked a lot, did a lot of pl
John Resig - Processing.js
As a sort-of reverse birthday present I’ve decided to release one of my largest projects, in recent memory. This is the project that I’ve been alluding to for quite some time now: I’ve ported the Processing visualization language to JavaScript, using the Canvas element. I’ve been working on this project, off-and-on now, for the past 7 months – it’s been a fun, and quite rewarding, challenge. The f
John Resig - Revenge of the Timers
After my earlier post on analyzing JavaScript timer performance a lot has changed, especially in Firefox 3. An excellent patch landed the other day which is giving us some excellent performance improvements – not the least of which is related to timers. If you remember from before I took a look at how responsive JavaScript timers were on OSX in Firefox 2, Safari 3, Firefox 3, and Opera 9. The conc
John Resig - Cross-Window Messaging
Another new feature from the HTML 5 specification, that just landed for Firefox 3, is the cross-origin postMessage API. This particular API adds a new method to every window (including the current window, popups, iframes, and frames) that allows you to send textual messages from your current window to any other – regardless of any cross-domain policies that might exist. Specifically, you’re given
John Resig - Cross-Site XMLHttpRequest
I’ve just finished writing up some docs on the new Cross-Site XMLHttpRequest feature in Firefox 3. I was a little worried at first, but it definitely appears to be both easy-to-implement and easy-to-use. Specifically, it’s an implementation of the W3C Access Control working draft (which is respected by Firefox’s XMLHttpRequest). If you’re interested in giving it a try you should fire up your copy
John Resig - Speaking in Tokyo
I’m currently in Tokyo, getting ready to give a couple presentations on JavaScript 2/ECMAScript 4/ActionScript 4. It should be a lot of fun – this will probably be the first time that a lot of people hear about these language changes so I’m interested in getting some feedback. (I’ll be posting my “Future of JavaScript” slides from last week’s Ajax Experience conference, shortly.) Specifically, I’l
John Resig - Google Address Translation
This is a hack that brings the power of address translation (converting a US Postal Address into a Latitude/Longitude) to the Google Maps API – something that wasn’t provided in the default distribution. This hack, which is completely reusable, is broken down into a couple portions. Address Translation Proxy (written in Perl) This portion of this project queries the open API provided by Geocoder,
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