ES6 In Depth: Collections – Mozilla Hacks - the Web developer blog
ES6 In Depth is a series on new features being added to the JavaScript programming language in the 6th Edition of the ECMAScript standard, ES6 for short. Earlier this week, the ES6 specification, officially titled ECMA-262, 6th Edition, ECMAScript 2015 Language Specification, cleared the final hurdle and was approved as an Ecma standard. Congratulations to TC39 and everyone who contributed. ES6 is
New Performance Tools in Firefox Developer Edition 40 – Mozilla Hacks - the Web developer blog
Today Mozilla is pleased to announce the availability of Firefox Developer Edition 40 (DE 40) featuring all-new performance tools! In this post we will cover some of DE 40’s new developer tools, fixes, and improvements made to existing tools. In addition, a couple of videos showcase some of these features. Note: Many of the new features were introduced in May, in an earlier Mozilla Hacks post. Int
Using the Firefox DevTools to Debug fetch() on GitHub – Mozilla Hacks - the Web developer blog
Firefox Nightly recently added preliminary support for Fetch, a modern, Promise-based replacement for XMLHttpRequest (XHR). Our initial work supported most of the Fetch Specification, but not quite all of it. Specifically, when Fetch first appeared in Nightly, we hadn’t yet implemented serializing and de-serializing of FormData objects. GitHub was already using Fetch in production with a home-grow
This API is so Fetching! – Mozilla Hacks - the Web developer blog
For more than a decade the Web has used XMLHttpRequest (XHR) to achieve asynchronous requests in JavaScript. While very useful, XHR is not a very nice API. It suffers from lack of separation of concerns. The input, output and state are all managed by interacting with one object, and state is tracked using events. Also, the event-based model doesn’t play well with JavaScript’s recent focus on Promi
CSS Variables in Firefox Nightly – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Brandon First of all, congrats on landing this. We’ve been wanting native CSS variables for a long time. However, this syntax is really verbose. Would it be too taxin
Split console, pretty-print minified JS and more – Firefox Developer Tools Episode 28 – Mozilla Hacks - the Web developer blog
Split console, pretty-print minified JS and more – Firefox Developer Tools Episode 28 Just in time for the holidays, the Firefox Developer Tools teams has some excellent new surprises for you to enjoy as you hack on holiday projects! It’s a pretty long list, so let’s get started. App Manager The App Manager continues to be a priority for the Devtools team and with Firefox 28, in addition to many m
New Features in Firefox Developer Tools: Episode 24 – Mozilla Hacks - the Web developer blog
Releases have recently rolled, and there are a slew of new features coming to the developer tools in Firefox 24. Firefox 24 is currently in our alpha channel Firefox Aurora, and will hit the main release channel on September 17th, 2013. A little alitteration leads to lots of cool features coming this release. I’m only touching on a few highlights here; to see a comprehensive list of all the new ch
Developer Tools Update – Firefox 22 – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Girish Hi, Can you switch to secured version of embedded YouTube videos ? Nightly blocks http embeds in secured pages. April 11th, 2013 at 02:21 Robert Nyman [Editor]
Serving Backbone for Robots & Legacy Browsers – Mozilla Hacks - the Web developer blog
I like the Single Page Application model and Backbone.js, because I get it. As a former Java developer, I am used to object oriented coding and events for messaging. Within our HTML5 consultancy, SC5, Backbone has become almost a synonym for single page applications, and it is easy to move between projects because everybody gets the same basic development model. We hate the fact that we need to ha
Firebug 1.11 New Features – Mozilla Hacks - the Web developer blog
Firebug 1.11 has been released and so, let’s take a look at some of the new features introduced in this version. First of all, check out the following compatibility table: Firebug 1.10 with Firefox 13.0 – 17.0 Firebug 1.11 with Firefox 17.0 – 20.0 Firebug 1.11 is open source project surrounded by contributors and volunteers and so, let me also introduce all developers who contributed to Firebug 1.
Tracking Down Memory Leaks in Node.js – A Node.JS Holiday Season – Mozilla Hacks - the Web developer blog
Tracking Down Memory Leaks in Node.js – A Node.JS Holiday Season This post is the first in the A Node.JS Holiday Season series from the Identity team at Mozilla, who last month delivered the first beta release of Persona. To make Persona, we built a collection tools addressing areas ranging from debugging, to localization, to dependency management, and more. This series of posts will share our lea
The Web Developer Toolbox: Backbone – Mozilla Hacks - the Web developer blog
This is the fourth in a series of articles dedicated to useful libraries that all web developers should have in their toolbox. The intent is to show you what those libraries can do and help you to use them at their best. This fourth article is dedicated to the Backbone library. Introduction Backbone is a library originally written by Jeremy Ashkenas (also famous for having created CoffeeScript). B
Aurora 17 it out, bringing better security and support for new standards – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Antonio In the features list I don’t see any implementations of the CSS Flexible Box Layout module. When will Firefox begin to implement this spec? September 1st, 201
New Firefox Command Line helps you develop faster – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Rodrigo O_O This command line tool is awesome! August 30th, 2012 at 11:21 Robert Nyman Glad you like it! August 30th, 2012 at 23:56 Adrian Quevedo I’m really excited
DOM MutationObserver – reacting to DOM changes without killing browser performance. – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. smaug The right link to the spec is http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#mutation-observers Also, the API will be un-prefix very soon. We want to
Aurora 14 is out! What's new in it? – Mozilla Hacks - the Web developer blog
We have just released Firefox Aurora 14, which includes a number of improvements. If all goes well, these features should be released in 12 weeks as part of Firefox 14. Highlights There are a few of things we’d like to shine some extra light on here: Native Fullscreen Support in Mac OS X 10.7 “Lion”: Firefox can now use the native full-screen mode and button. It animates and behaves properly in th
Firefox Aurora 13 Developer Tools Updates – Mozilla Hacks - the Web developer blog
While users of the Firefox release channel are just now getting to enjoy the Style Editor and the Page Inspector 3D (Tilt), we have a number of nice developer tools improvements that we’ve shipped to the Aurora channel for Firefox 13. Aurora users are up to 12 weeks ahead of the release channel. Page Inspector Styling CSS menus and other elements that are styled with the :hover, :active and :focus
Saving images and files in localStorage – Mozilla Hacks - the Web developer blog
Thanks! Please check your inbox to confirm your subscription. If you haven’t previously confirmed a subscription to a Mozilla-related newsletter you may have to do so. Please check your inbox or your spam filter for an email from us. Andrea Gimmarchi Sorry guys, but I think this post is misleading. We don’t even have control over localStorage size and you guys are suggesting to store files in an o
Using the Battery API – Part of WebAPI – Mozilla Hacks - the Web developer blog
Detecting battery level in a device or computer can help you inform the user of the current status. Within Mozilla’s WebAPI, we have the Battery API to offer that possibility. Accessing the battery First, it’s a matter of accessing the battery object: var battery = navigator.mozBattery; Properties There are a few properties offered to detect the charging level of the battery in the device: Battery
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Creating thumbnails with drag and drop and HTML5 canvas – Mozilla Hacks - the Web developer blog