Jan Deppisch netzartist

What forces layout / reflow

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.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Essential JavaScript Links

I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).

Styling native elements

Native HTML controls are a challenge to style. You can style any element in the web platform that uses Shadow DOM with a pseudo element ::pseudo-element or the /deep/ path selector.

video::webkit-media-controls-timeline {
  background-color: lime;
}

video /deep/ input[type=range] {

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

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.

NOTE I now use the conventions detailed in the SUIT framework

Template Components

Used to provide structural templates.

Pattern

t-template-name

	// ----
	// Sass (v3.4.6)
	// Compass (v1.0.1)
	// ----

	$class_list: icon-device, icon-explore, icon-recommend, icon-recentlywatched;

	%class_styles {
	content: '';
	display: block;

	<script type="text/javascript">
	(function () {
	"use strict";
	// once cached, the css file is stored on the client forever unless
	// the URL below is changed. Any change will invalidate the cache
	var css_href = './index_files/web-fonts.css';
	// a simple event handler wrapper
	function on(el, ev, callback) {
	if (el.addEventListener) {
	el.addEventListener(ev, callback, false);