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                文章鏈接來源:http://mp.weixin.qq.com/s/FspD-d8JYWn9SWCBVlJeLA 頁面卡頓就是失幀或者掉幀了。 瀏覽器渲染的流程: ![](https://box.kancloud.cn/b5772de1b806c04c05477f26abdf7149_1354x284.png) 首先加載js做的邏輯,觸發了樣式變化,style把應用的樣式規則計算好之后,把影響到的頁面元素進行重新布局,叫做layout(布局),再把它畫到內存的一個畫布里面,paint(顏料)成了像素,最后把這個畫布刷到屏幕上去,叫做composite(合成物),形成一幀。
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