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用 preload 预加载页面资源
source link: https://juejin.im/post/5a7fb09bf265da4e8e785c38
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作者简介 felix 蚂蚁金服·数据体验技术团队 本文主要介绍preload的使用，以及与prefetch的区别。然后会聊聊浏览器的加载优先级。 preload 提供了一种声明式的命令，让浏览器提前加载指定资源(加载后并不执行)，在需要执行的时候再执行。提供
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