This Week's HTML5 and Browser Technology News (Issue 241)

Read this e-mail on the Web HTML Weekly Issue 241 — May 25, 2016 Stylelint: The Style Sheet Linter We've Always Wanted Aleks Hudochenkov Linting is a common practice for cleaning up code. This article looks at stylelint, a linter for style sheets. New DevTools Web Performance Tooling Tips and Features (video) Google I/O 2016 Paul Irish and Sam Saccone show off new tips, tricks and features in DevTools to help you debug the performance of your site. What Web Devs Should Know about Autofill, But Don’t Jason Grigsby Many people know that you can scan your credit cards in Mobile Safari. But how many web developers know how to create a form that supports that feature? How to find and fix the slowest code in your .NET application Red Gate  Sponsored Boost the performance of your .NET application with ANTS Performance Profiler. Get rich performance data on your code and database queries to find your application's bottleneck fast. Try ANTS Performance Profiler on your application now. Understanding The CSS Property Value Syntax Russ Weakley If you understand how the W3C defines property values at a technical level, you’ll more easily be able to understand any of the W3C’s CSS specifications. How to Get Started with a Content Security Policy Heiko Webers A Content Security Policy (CSP) is a great way to reduce or completely remove Cross-Site Scripting (XSS) vulnerabilities. Bringing Seamless Checkouts to The Mobile Web (video) Google I/O From Google I/O comes a talk looking at the PaymentRequest API, a W3C API that could eliminate checkout forms and standardize payment collection. Instant Loading: Building Offline-First Progressive Webapps (video) Jake Archibald This video covers ServiceWorker, web manifests, add-to-homescreen banners, IndexedDB and BackgroundSync APIs. Jobs Frontend Developer, Backbase, AmsterdamIf you love to build beautiful user experiences, if you want to breathe Javascript daily, if you look for multicultural teams and inspiring city - join Backbase and have fun with us in Amsterdam. Check out what we do. Backbase Job Offers. No resume necessary.Create your Hired profile to get top companies to start applying to hire you. Get offers from $75,000 - $250,000 on the platform in 1 week. Hired.com In brief Webmention Now A W3C Candidate Recommendation news Provides a mechanism for a site to notify other sites being linked to.  W3C News Menus, Sharing, and Dynamic CSS Classes in AMP news A look at new AMP tags supporting accordions, social sharing, sidebars, and more.  Accelerated Mobile Pages Project Chromium Issue: Can't Navigate Back using the 'Backspace' Key news  Chromium W3C Expands Emmy-Winning Subtitles Work for More Accessible Web Video news Has published TTML Profiles for Internet Media Subtitles and Captions 1.0 IMSC1 as a W3C Recommendation.  W3C An Updated Working Draft for CSS Grid Layout news  W3C CSS WG Blog New Angular 2 Course with Lukas Ruebbelke and Scott Moss course Angular 2 is a powerful evolution of AngularJS. Discover why Angular 2 is half the framework with twice the power.  Frontend Masters SPONSOR Using the CSS3 box-shadow Property tutorial Digs into some areas you may not have touched before.  bitsofcode HTML5 Video and Multiple Caption Track Display tutorial There’s a playable demo.  Ian Devlin 6 Ways of Injecting a Line Break with CSS tutorial Inserting a line break using CSS to avoid using a ‘br’ element.  Chris Coyier The PostCSS Guide to Improving Selectors and Media Queries tutorial PostCSS has a variety of plugins aiming at implementing polyfills for the newest CSS features.  Pavels Jelisejevs Let's Talk About MIDI (on the Web) video A look at MIDI, the Web Audio API, the MIDI Show Control, and using the MIDI BLE standard from the Web.  Ruth John Practical Lessons From A Year of Building Web Components video  Monica Dinculescu AMP + Progressive Web Apps: Start Fast, Stay Engaged video  Alex Russell The Future of JavaScript - 2016 and Beyond opinion Learn what is coming around for the most popular JS frameworks in 2016 and beyond in this free whitepaper.  Telerik Kendo UI SPONSOR Web Image Effects Performance Showdown opinion CSS filters, blend modes, Canvas and SVG filters are put up against each other  Una Kravets More Meaningful CSS opinion A defense of liberally using class names and class-based systems in CSS.  Jonathan Snook caniuse-cmd: A Command Line Tool to Query 'caniuse' tools  Sam Gentle Bideo.js: Easy Fullscreen HTML5 Background Video code  Rishabh Family.scss: 20 Smart Sass Mixins for :nth-child-ified Elements code e.g. @include first(3) to target the first three elements of a certain type  Luky Vj Starability.css: Accessible Star Rating Widget with Cute Animations code Accessible and customizable using standard radio input elements.  Anna Migas Exporting An Indie Unity Game to WebVR demo Includes a fun VR game you can play in the browser (can be played without VR).  Mozilla Hacks Displacementmap Image Transitions using HTML5 Canvas demo  CodePen Curated by Peter Cooper and published by Cooper Press. 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