All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
My notes on setting up a Raspberry Pi with an Edimax EW-7811UN WiFi Dongle and motion sensors.
We intend to use a few Raspberry Pis around the office, in order to find out if certain rooms are beeing used or not. For this, we need to get WiFi and a motion sensor working.