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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ![](https://img.kancloud.cn/2b/e0/2be0045af0cf18d31320723debf42fc8_1244x680.png) `ReactDOM.render(</App>,?document.getElementById('root'))` 中 我們傳進去的是類,并沒有創建實例 render初次渲染,用setState和forceUplate更新 reactDom.render做的事情 ![](https://img.kancloud.cn/a1/b5/a1b5de42c1e5a0506a4d6fd3a5cec82e_1006x654.png) hydrate和render的區別就是第四個參數:hydrate是true,render是false, hydrate是在有服務端渲染的時候。區別是:是否會調和原來存在與dom上的HTML節點,服務端渲染會用到hydrate節點。 ![](https://img.kancloud.cn/96/cf/96cf434f18b2643612dd9b509b898af2_1024x867.png)
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                              哎呀哎呀视频在线观看