--- title: "This week's JavaScript news, issue 233" publication: "JavaScript Weekly" issue: 233 published_at: "2015-05-22" canonical_url: "https://javascriptweekly.com/issues/233" --- This week's JavaScript news, issue 233 This week's JavaScript news — [Read this e-mail on the Web](http://javascriptweekly.com/issues/233) JavaScript WeeklyIssue 233 — May 22, 2015[We Have A Problem with Promises](http://pouchdb.com/2015/05/18/we-have-a-problem-with-promises.html) Promises are awesome, but Nolan Lawson has noticed that ‘many of us are using promises without really understanding them.’ He clears up a lot of misconceptions in this example-rich post. Nolan Lawson [Why Backbone.js?](https://roost.bocoup.com/2015/austin/blog/why-backbone/) A look at why Bocoup chose Backbone for their client-side dev workshop. In short, Backbone is compact, popular, mature, and still a great choice. Mike Pennisi [Advancing JavaScript Without Breaking The Web [video\]](https://channel9.msdn.com/Events/WebPlatformSummit/2015/Advancing-JavaScript-without-breaking-the-web) At the Microsoft Edge Web Summit 2015, Christian Heilmann demonstrated the pros and cons of the latest JavaScript features along with workarounds to keep things working. Christian Heilmann [![DigitalOcean\](https://copm.s3.amazonaws.com/a5a1e008.jpg)](https://www.digitalocean.com/?utm_medium=paid_newsletters&utm_source=cooperpress&utm_campaign=javascriptweekly&utm_content=SpinUp2_DO10_P_hp)[Spin up a server or two, on us. Use promo DO10](https://www.digitalocean.com/?utm_medium=paid_newsletters&utm_source=cooperpress&utm_campaign=javascriptweekly&utm_content=SpinUp2_DO10_P_hp)DigitalOcean provides simple cloud infrastructure that’s built for developers. You can deploy an SSD cloud server in under a minute and run it for as little as $5/mo (512MB RAM, 20GB SSD, 1CPU, 1TB transfer). Use promo code DO10 for $10 credit. DigitalOceanSponsor [JSX Looks Like an Abomination but It's Good For You](https://medium.com/javascript-scene/jsx-looks-like-an-abomination-1c1ec351a918) ‘JSX is like a healthy vegetable that tastes like decadent chocolate cake,’ starts Eric Elliott on React’s inline HTML markup format. Eric Elliott [Delivering Fast JavaScript Performance in Microsoft Edge](http://blogs.windows.com/msedgedev/2015/05/20/delivering-fast-javascript-performance-in-microsoft-edge/) Edge, Microsoft’s IE replacement on Windows 10, is setting new records in the JavaScript speed wars. Chakra’s PM Lead, Gaurav Seth, explains. Microsoft [Plain JavaScript Functions and Helpers](http://plainjs.com/javascript/) Quick examples of jQuery-free alternatives to common JavaScript tasks from selecting elements and handling events to Ajax and animation. Pixabay [Discussing a Potential Underscore / Lodash Merger](https://github.com/jashkenas/underscore/issues/2182) Some discussion over the potential for the popular Underscore and Lodash libraries to merge. Jeremy Ashkenas Jobs - [JavaScript Developer at Backbase (Amsterdam)](http://www.jobscore.com/jobs2/backbase/lead-frontend-developer/aD_iK8ROWr45y7eJe9fLhG?ref=rss=68)Unique fast growing startup - like company, powerful software products, awesome international peers. Come work with us in Amsterdam! The momentum is here now. No bullshit, just watch it: [Working at Backbase](https://www.youtube.com/watch?v=dvK3JiEv1zg=youtu.be) Backbase - [Full-Stack Engineer at Zaption (San Francisco, CA)](http://www.zaption.com/jobs?utm_source=javascriptweekly&utm_medium=email)Zaption is an education-technology company that makes interactive video tools for teachers. Solve real problems with Node, Knockout, and MongoDB. We're very small, mission-driven, venture-funded, and growing fast. Talk to us! Zaption - [Freelance with Companies like Airbnb, IDEO JPMorgan](http://www.toptal.com/developers?utm_source=js_weekly&utm_medium=cpm-newsletter&utm_campaign=js_weekly_job)Work on special projects with great companies through Toptal. Set your weekly/hourly rate, and work from anywhere in the world as an elite HTML5 developer. See if you have what it takes TopTal In Brief [Node.js and io.js Leaders Building An Open, Neutral Node.js Foundation](http://blog.nodejs.org/2015/05/15/node-leaders-are-building-an-open-foundation/) news Node.js Blog [Fluent Conference 2015: Recapping the Focus on Performance](http://wijmo.com/fluent-2015-focused-on-performance/?utm_source=JavaScript%20Weekly=5.22.15%20sponsored%20link%20Wijmo%20blog%20on%20fluent%20and%20peformance=Wijmo%20) news Looking to boost performance in your web and mobile apps? This blog combines the top talks from Fluent on the subject and a datagrid performance benchmark sample from Wijmo. WijmoSponsor [EmberWeekend: A Podcast All About Ember](https://emberweekend.com/episodes) news podcast The latest episode is about how Heroku uses Ember for their dashboard app. [Meteor Raises $20M To Build The One JavaScript Stack To Rule Them All](http://techcrunch.com/2015/05/19/meteor-raises-20m-to-build-the-one-javascript-stack-to-rule-them-all/) news TechCrunch [ES6 In Depth: Generators](https://hacks.mozilla.org/2015/05/es6-in-depth-generators/) tutorial Mozilla Hacks [Getting Started with TypeScript](http://blog.teamtreehouse.com/getting-started-typescript) tutorial A good, short but very entry level tutorial. Andrew Chalkley [Easily Testing React Components with react-test-tree](https://medium.com/qubit-engineering/easily-testing-react-components-with-react-test-tree-f9e1668b1c2d) tutorial James Hollingworth [Using Chakra for Scripting Applications across Windows 10](http://blogs.windows.com/msedgedev/2015/05/18/using-chakra-for-scripting-applications-across-windows-10/) tutorial Microsoft [Moving from CoffeeScript to ES6](https://gist.github.com/danielgtaylor/0b60c2ed1f069f118562) tutorial Daniel Taylor [d-Threeact: How the Sift Science Console Team Made d3 and React the Best of Friends](http://blog.siftscience.com/blog/2015/4/6/d-threeact-how-sift-science-made-d3-react-besties) tutorial Sift Science Blog [Setting State in React](https://frontendmasters.com/courses/react/setting-state/) video A short video demoing setting state in React -- part of the new course with Ryan Florence. Frontend MastersSponsor [The Future of Node.js with Scott Hammond, CEO of Joyent](https://changelog.com/155/) podcast The Changelog [Two Weeks with React and Meteor](https://www.youtube.com/watch?v=-QtrkXKvQFc) video Max Harris [How I Learned to Stop Worrying and Love React](http://firstdoit.com/react-1/) opinion Guilherme Rodrigues [The JavaScript-Dependency Backlash: Myth-Busting Progressive Enhancement](http://www.sitepoint.com/javascript-dependency-backlash-myth-busting-progressive-enhancement/) opinion SitePoint [JavaScript Graphing Library Comparison](http://www.jsgraphs.com/) tools A great interactive visual comparison of what 31 (so far) different graphing libraries are capable of. JSGraphs [Famous Engine: A High-Perf JS Library for Animations and Interfaces](http://famous.org/) code Famous has been around a while but it has a new homepage with live demos. Famous [Express Happiness: An Express Wrapper Framework](https://github.com/andreas-trad/express-happiness) code node Andreas Trantidis [Johnny Five (JavaScript Robotics) and Intel IoTDevKit Example Sketches](https://github.com/rwaldron/johnny-five/wiki/Johnny-Five-and-Intel-IoTDevKit-Example-Sketches) code node Rick Waldron [viewport.js: Reflect Scroll Position on a Navigation Menu](http://asvd.github.io/viewport/) code [Clusterize.js: Tiny Vanilla JS Plugin to Display Large Data Sets Easily](http://nexts.github.io/Clusterize.js/) code Curated by [Peter Cooper](http://twitter.com/peterc) and published by [Cooperpress](https://cooperpress.com/). Like this? You may also enjoy: [FrontEnd Focus](http://frontendfocus.co/) : [Node Weekly](http://nodeweekly.com/) : [React Status](http://react.statuscode.com/) [Stop getting JavaScript Weekly](*|UNSUB|*) : [Change email address](*|UPDATE_PROFILE|*) : [Read this issue on the Web](http://javascriptweekly.com/issues/233) © Cooperpress Ltd. 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