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
| <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); |
Google Chrome Developers says:
The new WOFF 2.0 Web Font compression format offers a 30% average gain over WOFF 1.0 (up to 50%+ in some cases). WOFF 2.0 is available since Chrome 36 and Opera 23.
Some examples of file size differences: WOFF vs. WOFF2
| #!/bin/sh | |
| ### | |
| # SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer) | |
| # For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos | |
| ### | |
| # Alot of these configs have been taken from the various places | |
| # on the web, most from here | |
| # https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx |
| $sprites: sprite-map("sprites/*.png"); | |
| $sprites-retina: sprite-map("sprites-retina/*.png"); | |
| @mixin sprite-background($name) { | |
| background-image: sprite-url($sprites); | |
| background-position: sprite-position($sprites, $name); | |
| background-repeat: no-repeat; | |
| display: block; | |
| height: image-height(sprite-file($sprites, $name)); | |
| width: image-width(sprite-file($sprites, $name)); |
| <!doctype html> | |
| <html> | |
| <head> | |
| <!-- Encoding --> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> | |
| <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame --> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"></meta> | |
The new rake task assets:clean removes precompiled assets. [fxn]
Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]
Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav]
Template generation for jdbcpostgresql #jruby [Vishnu Atrai]
| /** | |
| * Helper function for passing arrays of promises to $.when | |
| */ | |
| jQuery.whenArray = function ( array ) { | |
| return jQuery.when.apply( this, array ); | |
| }; | |
| /** | |
| * Accepts a single image src or an array of image srcs. |