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
| @mixin background-image-retina($file, $type, $width, $height) { | |
| background-image: url($file + '.' + $type); | |
| @media (-webkit-min-device-pixel-ratio: 2), (-moz-min-device-pixel-ratio: 2) { | |
| & { | |
| background-image: url($file + '@2x.' + $type); | |
| -webkit-background-size: $width $height; | |
| } | |
| } | |
| } |
There is a long standing issue in Ruby where the net/http library by default does not check the validity of an SSL certificate during a TLS handshake. Rather than deal with the underlying problem (a missing certificate authority, a self-signed certificate, etc.) one tends to see bad hacks everywhere. This can lead to problems down the road.
From what I can see the OpenSSL library that Rails Installer delivers has no certificate authorities defined. So, let's go fetch some from the curl website. And since this is for ruby, why don't we download and install the file with a ruby script?
| /* modernizr-test.js | |
| * Daniel Ott | |
| * 3 March 2011 | |
| * Custom Tests using Modernizr's addTest API | |
| */ | |
| /* iOS | |
| * There may be times when we need a quick way to reference whether iOS is in play or not. | |
| * While a primative means, will be helpful for that. | |
| */ |
This is now an actual repo:
