Mathieu Laurent messenjer

The BBC has a server-side image service which provides developers with multiple sized versions of any image they request. It works in a similar fashion to http://placehold.it/ but it also handles the image ratios returned (where as placehold.it doesn't).

The original BBC News process (and my re-working of the script) follows roughly these steps...

Create new instance of ImageEnhancer
Change any divs within the page (which have a class of delayed-image-load) into a transparent GIF using a Base64 encoded string.
- We set the width & height HTML attributes of the image to the required size
- We know what size the image needs to be because each div has custom data-attr set server-side to the size of the image
- We then set a class of image-replace onto each newly created transparent image
We use a 250ms setTimeout to unblock the UI thread and which calls a function resizeImages which enhances the image-replace images so their source is now set to a URL whe

Design forces:

ECMAScript (ES) Module Loader API is coming. The ES module ID syntax are strings that are just treated as string IDs and not paths.
Existing JS module experience in CommonJS/Node/AMD worlds of using module IDs that are resolved to a URL/path for fetching.
Better package managers are coming for front end web apps. These package managers install assets by IDs not by paths.
For front end code, baseURL + moduleID + '.js' is likely the default ID-to-URL resolution, but other declarative config could be possible for browser-based ES Module Loaders. Examples of useful declarative config in this area are the problems solved via common AMD loader config

So it will be common in JS code to use string IDs, and not URLs to refer to dependency resources.

With the coming of web components and custom elements, it will be possible for a custom element to depend on other custom e

More details here: https://developer.mozilla.org/en/docs/Simple_Firefox_build

Hacking Firefox

Get Firefox' source code:

git clone https://github.com/mozilla/gecko-dev.git
git checkout fx-team

Install dependencies:

Vue: Pass Slots through from Parent to Child Components

The Situation

We've got some components A, B and C which provide different slots.

const A = {
  template: `<div><slot name="a">Default A Content</slot></div>`
}

const B = {

	// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
	// http://my.opera.com/emoller/blog/2011/12/20/requestanimationframe-for-smart-er-animating

	// requestAnimationFrame polyfill by Erik Möller. fixes from Paul Irish and Tino Zijdel

	// MIT license

	(function() {
	var lastTime = 0;
	var vendors = ['ms', 'moz', 'webkit', 'o'];

	// You create your bookmarklet by instantiating
	// a new Bookmarklet function, then pass in the options like so.
	// This example checks to see if the var is already defined, and makes
	// sure not to overwrite it. This could happen if the user clicks on
	// the bookmarklet more than once.

	MyBookmarklet = MyBookmarklet \|\| (MyBookmarklet = new Bookmarklet({
	// debug: true, // use debug to bust the cache on your resources
	css: ['/my/style.css'],
	js: [],

	// jQuery fix for Webkit SVG height bug.
	// Documented here: https://bugs.webkit.org/show_bug.cgi?id=82489 & http://www.brichards.co.uk/blog/webkit-svg-height-bug-workaround
	// Found via: http://stackoverflow.com/questions/7570917/svg-height-incorrectly-calculated-in-webkit-browsers


	function fixWebkitHeightBug(){
	var svgW = 658;
	var svgH = 500;
	var curSVGW = $('#svg-container').width();
	var newSVGH = heightInRatio(svgH,svgW,curSVGW);

	(function() {

	var script,
	scripts = document.getElementsByTagName('script')[0];

	function load(url) {
	script = document.createElement('script');
	script.async = true;
	script.src = url;
	scripts.parentNode.insertBefore(script, scripts);

	CookieClicker = {
	start: function() {
	this.clickInterval = setInterval(function(){
	// Click the large cookie as fast as possible!
	document.getElementById("bigCookie").click();
	}, 1);

	this.goldInterval = setInterval(function(){
	// Click the golden cookie
	var shimmer = document.getElementsByClassName("shimmer")[0];