This Week in JavaScript - 3 April 2017

Hello and welcome to This Week in JavaScript, our lovingly curated collection of links relating to what’s new and exciting in the world of JS. The complete list is tagged jsweekly. (Don’t forget to check out our weekly .NET and front end roundups too!)

And now for this week’s JavaScript finds …

Getting Started

Learning More

  • How to sometimes complete your side projects - With new frameworks popping up left & right, it’s easy to get distracted unless you treat your side projects with the same level of discipline as your code base at work.


  • Photopea - An advanced PNG parser in 300 lines of Javascript.
  • rrule - JavaScript library for working with recurrence rules for calendar dates.
  • nanogallery2 - Beautiful, modern and high-quality photo galleries.

ES6 / ES20xx


  • 7 questions to ask before choosing your technology stack - Choosing the right technology stack is half art and half science. Getting that balance wrong can have a significant impact on your project, so it’s crucial to assess all possible risks.
  • Which JavaScript Frameworks Take Along With You In 2017? - There are hundreds of free JS libraries out and it becomes real tough to choose the right JavaScript framework for your application. Many the developers only know the big names like jQuery and React but there are many other popular JavaScript frameworks or JS libraries which must not be missed in the forthcoming year 2017.
  • How to build a message delivery status in JavaScript - When building realtime applications, we often want to know the actual time when a process or event occurs. We can easily build a message delivery status using Pusher and JavaScript.
  • OverVue - A library providing Vue applications with "asynchronous-first" state management


React / Redux



  • Writing better JavaScript with Flow - Flow is a static type checker for JavaScript conceived with a goal of finding type errors in JavaScript code, often without having to modify our actual code.
  • How we exploited a code execution vulnerability in math.js - How we found, exploited and reported a remote code execution (RCE) vulnerability. It is meant to be a guide to finding vulnerabilities, as well as reporting them in a responsible manner.
  • All the tricks that help you debug TestCafe tests - TestCafe test code is executed on the server. Therefore, first, we should have a way to debug server code. User actions are emulated in the browser. That is why we also should have the capability to check what is happening on the client side.
  • Automated Accessibility Checking with aXe - aXe is an automated accessibility testing library which has set out on the road to bring accessibility testing into mainstream web development.
  • 77% of sites use at least one vulnerable JavaScript library - The other week a paper was released that reported that about 37% of sites included at least one JavaScript library with a known vulnerability. When we wrote about the findings, we mentioned that we thought that the reality was almost certainly worse.
  • Service Worker Testing Made Easy - Write your tests as if the tests themselves were being executed within a service worker environment. That means that you can require your service worker script, and make assertions against the contents of your cache, the registered listeners, and visible notifications.
  • TDD the RITE Way - When you dig into TDD you’re going to find a bunch of options for test frameworks. Let me save you some time: Which one you pick matters less than how simple your test suite is.
  • AVA, low-config testing for JavaScript - AVA is a Futuristic JavaScript test runner.

For more links like this and to keep up-to-date with the latest goings on in JS land, you can follow SitePoint’s JavaScript channel on Twitter.

Please PM us if you have anything of interest for the next issue or if there is anything you would like to see featured. Paul and chrisofarabia.


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