--- title: "This week's JavaScript news, issue 232" publication: "JavaScript Weekly" issue: 232 published_at: "2015-05-15" canonical_url: "https://javascriptweekly.com/issues/232" --- This week's JavaScript news, issue 232 This week's JavaScript news — [Read this e-mail on the Web](http://javascriptweekly.com/issues/232) JavaScript WeeklyIssue 232 — May 15, 2015[A Re-Introduction to JavaScript](https://developer.mozilla.org/en-US/docs/Web/JavaScript/A_re-introduction_to_JavaScript) An intermediate level JavaScript primer that aims to ‘re-introduce’ the language to you to clear up any confusion or out of date assumptions. Mozilla Developer Network [Getting Started with Angular 2 Developer Preview [video\]](https://www.youtube.com/watch?v=HmWm21cCAXM) Alex Eagle (of the Angular team) presents a 10 minute overview of building a simple Angular 2 app from scratch using TypeScript and the new Visual Studio Code code editor. YouTube [How Googlebot Crawls JavaScript](http://searchengineland.com/tested-googlebot-crawls-javascript-heres-learned-220157) The results of a series of tests made by SEO experts into how Googlebot parses, runs, and takes JavaScript into account when crawling sites. Search Engine Land [![Frontend Masters\](https://copm.s3.amazonaws.com/f7d5eefb.png)](https://frontendmasters.com/workshops/meteor-js/?utm_source=javascriptweekly&utm_medium=email)[Workshop: Building Real-Time Web Applications with Meteor.js](https://frontendmasters.com/workshops/meteor-js/)Learn how you can use just one framework to build an entire real-time reactive web application. Join us [online or in-person May 28th 29th.](https://frontendmasters.com/workshops/meteor-js/) Frontend MastersSponsor [io.js Moving to The Node.js Foundation; Merger to Follow?](http://venturebeat.com/2015/05/13/node-project-spinoff-io-js-is-moving-to-the-node-js-foundation-with-a-merge-in-progress/) The io.js Technical Committee has voted to join with the Node Foundation with a reunion between the codebases expected in due course. VentureBeat [Is It Time to Go SPA Only?](https://medium.com/ben-and-dion/is-it-time-to-go-spa-only-did-google-bot-put-a-nail-in-the-server-rendered-coffin-d3d4128d1ec0) With the advances in JavaScript processing by Googlebot, client-side capabilities, and the ever present demand for performance, is it time to double down on single page JavaScript-driven apps? Ben and Dion [JavaScript at 20: A Slidedeck from Brendan Eich](http://brendaneich.github.io/ModernWeb.tw-2015/) Reflections on the 20th anniversary of his initial work. Brendan Eich [The Transition to Ember 2.0 in Detail](http://emberjs.com/blog/2015/05/10/run-up-to-two-oh.html) A look at the transition plan for people with Ember 1.12 and 1.12 apps. Yehuda Katz Jobs - [craigslist seeks JavaScript Developers (San Francisco, CA)](http://sfbay.craigslist.org/sfc/eng/4919342771.html#?)CL seeks web devs with JavaScript, Node.js, CSS, and HTML experience to join a small (50), tech-driven, laid-back workplace to design and ship new features daily, and see them loved (or hated) by millions. Come help us save the world, or at least our corner of the Internet. craigslist - [Full Stack Developer at AlphaSights (New York, NY)](http://engineering.alphasights.com/?utm_source=javascriptweekly&utm_medium=email)Write high quality and maintainable code. Be trusted to act autonomously and influence process/workflows, product direction, and technology choices. Work in a project team with two-week iterations. AlphaSights - [Want to work on new projects? Make more money? Try a new stack? Relocate?](https://hired.com/?utm_source=newsletters=javascriptweekly=n-q2_15-petercooperpress=options)On Hired, we'll bring the options to you. With over 2,000 pre-screened tech companies in 10 cities in the US UK, you'll be sure to find what you're looking for. Join Hired today. Hired.com In Brief [Backbone 1.2.0 Released](http://backbonejs.org/#changelog) news [Ember.js 1.12 and 1.13 Beta Released](http://emberjs.com/blog/2015/05/13/ember-1-12-released.html) news [Polymer 0.9 Released](https://blog.polymer-project.org/announcements/2015/05/14/0.9-release/) news [How to Use Vorlon.js to Debug Your JavaScript Remotely](http://www.sitepoint.com/introducing-vorlon-js-use-debug-javascript-remotely/) tutorial David Catuhe [Creating Your First Angular 2 App with Multiple Pages, Components & More](https://auth0.com/blog/2015/05/14/creating-your-first-real-world-angular-2-app-from-authentication-to-calling-an-api-and-everything-in-between/) tutorial Martin Gontovnikas [Going Native with React, An Introduction](http://ryanclark.me/going-native-with-react/) tutorial A practical, code-heavy React Native tutorial. Ryan Clark [Why You Need a JavaScript Project Checklist](http://blog.bitovi.com/why-checklist/) tutorial opinion Plus how to create one of your own. Bitovi [Replacing jQuery with D3](http://blog.webkid.io/replacing-jquery-with-d3/) tutorial code Christopher Möller [Unit Testing A React Component using Jasmine and Webpack](https://egghead.io/lessons/react-unit-testing-a-react-component-using-jasmine-and-webpack) video Simon Bailey [JavaScript Loop Optimization](http://code.tutsplus.com/tutorials/javascript-loop-optimization--cms-23997) video Tom McFarlin [How Do You Judge A JavaScript Programmer by Only 5 Questions?](https://medium.com/@mpjme/how-do-you-judge-a-javascript-programmer-by-only-5-questions-f2abdf7dfd4a) opinion Mattias Petter Johansson [A Comparison of JavaScript HTTP Libraries for the Browser](http://www.sitepoint.com/comparison-javascript-http-libraries/) opinion SitePoint [JavaScript: The Extra Good Parts](http://engineering.wix.com/2015/04/21/javascript-the-extra-good-parts/) opinion Language enhancements worth using. Wix Engineering [Front-End Logging Made Easy: Use This JavaScript Logger](https://www.loggly.com/blog/front-end-logging-made-easy-use-this-javascript-logger/) tools Loggly [Build with the best Redis support and analytics from RedisGreen](http://www.redisgreen.net/) tools Production-ready Redis hosting starting at $14/month. RedisGreenSponsor [Tabris.js: Mobile App Development in JavaScript](https://tabrisjs.com/) tools EclipseSource [Babel Macros: Hygienic, Non-Syntactic JS Macros via Babel Plugin](https://github.com/codemix/babel-plugin-macros) tools codemix [How to find and fix the slowest code in your .NET application](http://www.red-gate.com/products/dotnet-development/ants-performance-profiler/?utm_source=javascriptweekly=displayemail=slowest_code=antsperformanceprofiler=email-23725) tools Find bottlenecks in your code or database boost performance with new ANTS Performance Profiler 9. Try free. Red Gate SoftwareSponsor [PyPy.js: An Experimental Python Environment for The Web](http://pypyjs.org/) tools [29 jQuery Plugins for Building Guided Site Tours](http://ninodezign.com/25-free-jquery-plugins-for-doing-guided-tours-through-a-website/) tools Ninodezign [ngPromiseStatus: Angular.js Promise-Aware UI Elements](http://barakchamo.github.io/ng-promise-status/) code Barak Chamo [watermark.js: Watermarks Images in The Browser](http://brianium.github.io/watermarkjs/) code Dynamically watermark images with text or other images in a variety of ways. Brian Scaturro [ReadRemaining.js: Tell Readers How Long Needed to Read Your Text](http://aerolab.github.io/readremaining.js/) code Aerolab ['Prelaunch Sign Up' App, built with Angular, Mongo and Mailgun](https://github.com/eddywashere/node-prelaunch) code node Eddy Hernandez [fakeIndexedDB: A Pure JS In-Memory Implementation of IndexedDB](https://github.com/dumbmatter/fakeIndexedDB) code Passes the W3C IndexedDB test suite, and can even run server-side with Node. Jeremy Scheff 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/232) © Cooperpress Ltd. Fairfield Enterprise Centre, Lincoln Way, Louth, LN11 0LS, UK