当然不是咖啡!  ##12.1 [react profile](https://facebook.github.io/react/docs/perf.html) ## 12.2 PureRenderMixin 当你的 props 和 state 都是 immutable 的时候… ~~~ var PureRenderMixin = require('react-addons-pure-render-mixin'); React.createClass({ mixins: [PureRenderMixin], render: function() { return <div className={this.props.className}>foo</div>; } }); ~~~ ## 12.3 [shouldComponentUpdate](https://facebook.github.io/react/docs/advanced-performance.html#shouldcomponentupdate-in-action) 可以通过这个方法对于 component 到底什么情况下应该重新 render 调优 > 所有图片来源于 giphy.com, copyright @[Futurama](http://www.cc.com/shows/futurama) > Author: Jichao Ouyang  > Modified: 2015-11-16 Mon 00:39 > Generated by: [Emacs](http://www.gnu.org/software/emacs/) 24.5.1 ([Org](http://orgmode.org/) mode 8.3.2) > with _(:з」∠)_ by [OrgPress](https://github.com/jcouyang/orgpress)