Update sakura-app.js #96
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监听浏览器resize 需要加settimeout
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抱歉这块我不是太懂，设置settimeout为何能够提高性能？ |
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因为js的resize在改变浏览器的窗口大小时候会执行多次，有些浏览器会渲染不过来，所以常规开发中都会加上0.5-1s的延时 |
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监听浏览器resize 需要加settimeout