koa – next generation web framework for node.js

Koa is a new web framework designed by the team behind Express, which aims to be a smaller, more expressive, and more robust foundation for web applications and APIs. Through leveraging generators Koa allows you to ditch callbacks and greatly increase error-handling. Koa does not bundle any middleware within core, and provides an elegant suite …

Vertical align anything with just 3 lines of CSS

.element { position: relative; top: 50%; transform: translateY(-50%); } Same goes for horizontal centering. Where one – back in the day – would abuse margin-left by setting a negative margin to half of the width, we can now use translateX(-50%) to horizontally center a fluid-width box. .element { position: relative; width: 400px; left: 50%; margin-left: …

Simon Sinek: Why Leaders Eat Last

In this in-depth talk, ethnographer and leadership expert Simon Sinek reveals the hidden dynamics that inspire leadership and trust. In biological terms, leaders get the first pick of food and other spoils, but at a cost. When danger is present, the group expects the leader to mitigate all threats even at the expense of their …

123D Circuits

123D Circuits.io enables beginners to easily get started with electronics. Instead of blowing up a component, you can now experiment freely in the live simulated virtual breadboard environment together with friends without being afraid of breaking something. 123D Circuits.io even allows you to simulate Arduino code along with your electronics to control it all or …

JavaScript Bouncing Ball

One of the assignments of one of the courses I teach requires my students to let a cube fall in a Three.js environment. To teach them about how something falls I used Choc to visualize and explain the process of falling per tick of the animation. The final code is available on CodePen. JavaScript Bouncing …