Tamim Bin Ibrahim tamimibrahim

Progress Chart using d3.js

I wanted to figure out the fastest way to load non-critical CSS so that the impact on initial page drawing is minimal.

TL;DR: Here's the solution I ended up with: https://github.com/filamentgroup/loadCSS/

For async JavaScript file requests, we have the async attribute to make this easy, but CSS file requests have no similar standard mechanism (at least, none that will still apply the CSS after loading - here are some async CSS loading conditions that do apply when CSS is inapplicable to media: https://gist.github.com/igrigorik/2935269#file-notes-md ).

Seems there are a couple ways to load and apply a CSS file in a non-blocking manner:

	/*
	* Takes provided URL passed as argument and make screenshots of this page with several viewport sizes.
	* These viewport sizes are arbitrary, taken from iPhone & iPad specs, modify the array as needed
	*
	* Usage:
	* $ casperjs screenshots.js http://example.com
	*/

	var casper = require("casper").create();

	var page = require('webpage').create();
	page.settings.loadImages = false;
	page.onConsoleMessage = function(msg) { console.log(msg); };

	var pageUrl = 'http://www.bloggersentral.com/2010/08/how-put-add-adsense-on-blogger.html';
	var num = 0;
	var max = 2;

	page.onLoadFinished = function() {
	var text = page.evaluate(function() {

	var system = require('system');

	// Exit in case of wrong parameter count.
	if (system.args.length !== 3) {
	console.log('Usage: scriptname targetUrl referrer');
	console.log('example: $> phantomjs fake-referrer.phantom.js http://example.com http://referrer.example.com');
	phantom.exit();
	}

	// Set the important pieces

	<?php # -- coding: utf-8 --
	/**
	* Plugin Name: T5 Silent Flush
	* Description: Flushes rewrite rules whenever a custom post type or taxonomy is registered and not already part of these rules. This is a soft flush, the .htaccess will not be rewritten.
	* Version: 2013.05.04
	* Author: Thomas Scholz <[email protected]>
	* Author URI: http://toscho.de
	* License: MIT
	* License URI: http://www.opensource.org/licenses/mit-license.php
	*/

	// SmoothScroll for websites v1.2.1
	// Licensed under the terms of the MIT license.

	// People involved
	// - Balazs Galambosi (maintainer)
	// - Michael Herf (Pulse Algorithm)

	(function(){

	// Scroll Variables (tweakable)

	<html>
	<head>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js" type="text/javascript"></script>
	<script>
	$(document).ready(function() {
	var colortest = $("#colortest");
	for (i = 1; i <= 300; i++) {
	var c = genColor();
	var newhtml = "<span style='font-family:\"Courier\",monospace;width:50px;height:30px;background-color:#" + c + "'>#" + c + "</span>";
	colortest.html(colortest.html() + newhtml);