rswanderer

/*
 * ESLint的JSON文件是允许JavaScript注释的，但在gist里显示效果不好，所以我把.json文件后缀改为了.js
 */

/*
 * ESLint 配置文件优先级：
 * .eslintrc.js(输出一个配置对象)
 * .eslintrc.yaml
 * .eslintrc.yml

paulirish

What forces layout / reflow

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.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent