ECMAScript 5 is on its way. Rising from the ashes of ECMAScript 4, which got scaled way back and became ECMAScript 3.1, which was then re-named ECMAScript 5 (more details)- comes a new layer of functionality built on top of our lovable ECMAScript 3. Update: I’ve posted more details on ECMAScript 5 Strict Mode, JSON, and More. There are a few new APIs included in the specification but the most inte
Apple, and the WebKit team, have recently proposed two different additions to CSS: CSS Transitions and CSS Animations. The two specifications are confusingly named – and it’s hard to tell what the difference is between them at first glance. However, to put it simply: CSS Transitions are easy to use, while CSS Animations are made for programmers. CSS Transitions CSS Transitions provide you with the
A brand-new implementation of the Selectors API has landed in the latest Firefox nightlies (and in Firefox 3.1a1) – on track to head your way in the upcoming Firefox 3.1 release. I’ve talked about this API before (1, 2) and while I do have some misgivings about the current API (which will be remedied in upcoming revisions of the spec) there is one thing that is undeniable about it: It is extraordi
This week I’ve been busy working on implementing a test suite for the Selectors API specification. I picked up a new microphone recently so I decided to do a quick walkthrough of the work that I’ve been doing and how I’ve been going about it. You can view the the video below: Implementing a Selectors API Test Suite You can run the test suite for yourself here (it’s still very much in flux – there
It’s been a little while since I last wrote about Cross-Window Messaging in Firefox 3 using postMessage and since that time it’s since a few API updates. Specifically the postMessage API has become much simpler and has stronger security brought into mind. If you’re unfamiliar with postMessage here’s a quick re-cap: It’s a way to communicate simple string-based messages across browser windows (this
Processing.js Basic Demos Basic demonstrations of how Processing works, from the Processing.org web site. All of the following demos were written by Casey Reas and Ben Fry unless otherwise stated. Processing.org Basic Demos Structure Statements and Comments Coordinates Width and Height Setup and Draw No Loop Loop Redraw Functions Recursion Recursion 2 CreateGraphics Form Points and Lines Shape Pri
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
Recently I was having a little bit of fun and decided to go about writing a pure JavaScript HTML parser. Some might remember my one project, env.js, which ported the native browser JavaScript features to the server-side (powered by Rhino). One thing that was lacking from that project was an HTML parser (it parsed strict XML only). I’ve been toying with the ability to port env.js to other platforms
Welcome Waxy.org and Slashdot readers. I blog about JavaScript, like it’s my job, feel free to subscribe for a ton more posts like this. Related Posts: Ruby VM in JavaScript JavaScript Talk at Northeastern University State of ECMAScript 4 The World of ECMAScript JavaScript As A Language When I was in Tokyo this past fall speaking at the Shibuya.JS user group I had the opportunity to see a number o
Welcome Waxy.org and Slashdot readers. I blog about JavaScript, like it’s my job, feel free to subscribe for a ton more posts like this. Related Posts: Running Java in JavaScript JavaScript Talk at Northeastern University State of ECMAScript 4 The World of ECMAScript JavaScript As A Language Note: I’m not the creator of HotRuby, as mentioned elsewhere – it is the work of a highly-skilled Japanese
So it’s finally happened: There’s going to be a Boston JavaScript Meetup tonight (7pm, January 9th, 2008 – Central Square). I plan on going – and I hope everyone will be able to make it (even if it is on super-short notice). I was getting caught up on my email late last night and noticed the notification concerning the new group. I panicked as I thought I had missed the meetup – thankfully it was
So I did a little bit of digging and I’ve pulled together something fun: I call it “The World of ECMAScript“. It’s a full map detailing everything that exists within the world of ECMAScript (with JavaScript, ActionScript, and JScript being its most-famous implementations). Right now I’m only showing things that can be built on top of (languages, engines, browsers, servers, etc.) – not end user app
During the past two weeks I’ve given three presentations on Tamarin and ECMAScript 4. I’ve gotten a ton of great feedback, criticism, and commentary – all of which has been very helpful. » Tamarin and ECMAScript 4 Here’s a quick re-cap of how the talks went: Ajax Experience East (The Future of JavaScript) There were some very smart questions asked by the audience here – and some pressing concerns.
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
This weekend I took a big step in upping the ante for JavaScript as a Language. At some point last Friday evening I started coding and didn’t stop until sometime mid-Monday. The result is a good-enough browser/DOM environment, written in JavaScript, that runs on top of Rhino; capable of running jQuery, Prototype, and MochiKit (at the very least). The implications of this are phenomenal, and I’m no
I just finished giving a presentation at the Future of Web Apps conference, here in London. Thanks to everyone who attended – I hope I didn’t sound too sleep deprived! In this talk I covered new features coming in Firefox (that should be interesting to developers) and talk a little bit about how the JavaScript language is advancing. You can find the full slides here: The Future of Firefox and Java
Recently, I’ve been spending a lot of time analyzing the speed of pure JavaScript engines, looking at how well they perform and what their particular strengths and weaknesses are. To start with, I analyzed the bleeding-edge code from: Rhino Spidermonkey (Firefox 3) Tamarin (Firefox 4?) JavaScriptCore (Safari 3) Right now I’m only looking at pure, JavaScript-only, tests (no tests of DOM or other AP
In the bustle of announcements surrounding OSCON, Blackhat, and the Ajax Experience one single, incredibly important, announcement was made: The introduction of two new Mozilla projects: IronMonkey and ScreamingMonkey. The critical, core, component of this is the Tamarin virtual machine (which is an Open Sourced version of the ActionScript Virtual Machine that powered the Adobe Flash Player). Tama
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