---
title: "This week's JavaScript news, issue 259"
publication: "JavaScript Weekly"
issue: 259
published_at: "2015-11-20"
canonical_url: "https://javascriptweekly.com/issues/259"
---

This week's JavaScript news, issue 259

This week's JavaScript news — [Read this e-mail on the Web](http://javascriptweekly.com/issues/259)

JavaScript WeeklyIssue 259 — November 20, 2015[TIFU by using Math.random()](https://medium.com/@betable/tifu-by-using-math-random-f1c308c4fd9d) A fascinating, in-depth look at the process of generating random numbers and why V8's Math.random() implementation isn’t what it should be.  Mike Malone 
[What's in ECMAScript 2016 (ES7)?](http://www.2ality.com/2015/11/tc39-process.html) If all the ES6, TC39, strawman, ES7, etc. jargon confuses you, you’ll appreciate this clean explanation from our former editor.  Dr. Axel Rauschmayer 
[Microsoft 'Visual Studio Code' Now Open Source](https://github.com/Microsoft/vscode) Visual Studio Code is a code editor built by Microsoft. It’s mostly written in TypeScript and runs as a desktop app using Node and [Electron.](https://github.com/atom/electron) Microsoft 
[![Imgix\](https://copm.s3.amazonaws.com/11d03810.png)](https://www.imgix.com/?utm_source=javascript-weekly&utm_medium=email&utm_campaign=2015-11-20-javascript-weekly)[Faster Page Loads with Responsive Images in 30 Minutes or Less](https://www.imgix.com/?utm_source=javascript-weekly&utm_medium=email&utm_campaign=2015-11-20-javascript-weekly)With imgix, integrating responsive images into your app could not be easier. imgix resizes, crops, and processes images on demand. Learn how to start delivering responsive images in less than 30 minutes. ImgixSponsor
[The Cost of Frameworks on Mobile](https://aerotwist.com/blog/the-cost-of-frameworks/) Thoughts over whether frameworks are too costly for mobile use, based on performance tests run against different versions of TodoMVC.
_Psst! Check out our [Mobile Web Weekly](http://mobilewebweekly.co/) if this topic appeals to you :-)_ Paul Lewis 
[Closures Are Not Magic](http://renderedtext.com/blog/2015/11/18/closures-are-not-magic/) A valiant attempt to explain closures in simple terms, using JavaScript.  Igor Šarčević 
[Plotly Open Sources Plotly.js, a JavaScript Graphing Library](https://plot.ly/javascript/open-source-announcement/) Built on top of d3.js, plotly.js is a declarative charting library offering things like 3D charts, statistical graphs, and SVG maps. [GitHub repo here.](https://github.com/plotly/plotly.js) Plotly 
[JavaScript Air: A New, Live Broadcast Podcast](https://medium.com/@kentcdodds/introducing-javascript-air-46700561f38d) The first episode will be on December 9th and feature a panel discussion with Brendan Eich. One for the calendar.  Kent C Dodds 


Jobs

- [Web Applications Engineer at Nest Labs.](https://nest.com/careers/web-applications-engineer/oicM1fw1?utm_source=javascriptweekly&utm_medium=email)

In Brief

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/259)

© Cooperpress Ltd. Fairfield Enterprise Centre, Lincoln Way, Louth, LN11 0LS, UK