12. How to Profile Component Perfomance / 如何提升效率
最后更新于：2022-04-01 05:02:23
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
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