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
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| // TextEncoder/TextDecoder polyfills for utf-8 - an implementation of TextEncoder/TextDecoder APIs | |
| // Written in 2013 by Viktor Mukhachev <vic99999@yandex.ru> | |
| // To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide. This software is distributed without any warranty. | |
| // You should have received a copy of the CC0 Public Domain Dedication along with this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>. | |
| // Some important notes about the polyfill below: | |
| // Native TextEncoder/TextDecoder implementation is overwritten | |
| // String.prototype.codePointAt polyfill not included, as well as String.fromCodePoint | |
| // TextEncoder.prototype.encode returns a regular array instead of Uint8Array | |
| // No options (fatal of the TextDecoder constructor and stream of the TextDecoder.prototype.decode method) are supported. |
| <!doctype html> | |
| <!-- http://taylor.fausak.me/2015/01/27/ios-8-web-apps/ --> | |
| <html> | |
| <head> | |
| <title>iOS 8 web app</title> | |
| <!-- CONFIGURATION --> |
| // Media Queries in Sass 3.2 | |
| // | |
| // These mixins make media queries a breeze with Sass. | |
| // The media queries from mobile up until desktop all | |
| // trigger at different points along the way | |
| // | |
| // And important point to remember is that and width | |
| // over the portrait width is considered to be part of the | |
| // landscape width. This allows us to capture widths of devices | |
| // that might not fit the dimensions exactly. This means the break |
| server { | |
| listen 80; | |
| server_name localhost; | |
| root /home/website/web; | |
| rewrite ^/app\.php/?(.*)$ /$1 permanent; | |
| try_files $uri @rewriteapp; | |
| location @rewriteapp { |
| {% capture html %} | |
| <html> | |
| ... | |
| </html> | |
| {% endcapture %}{{ html | strip_newlines | replace:' ','' | replace:' ','' | replace:' ',' ' }} |
| check host mongodb with address localhost | |
| start program = "/usr/bin/sudo /opt/database/mongo/bin/mongod" | |
| stop program = "/usr/bin/sudo /usr/bin/pkill -f mongod" | |
| if failed port 28017 protocol HTTP | |
| request / | |
| with timeout 10 seconds | |
| then start |
