如何在为 Google Chrome 扩展程序完全加载页面之前运行内容脚本
[英]How to make a content script run before a page is fully loaded for Google Chrome Extensions
问题描述
As a fun project, I am working on creating a "Dark Mode" content script for a Google Chrome Extension.
作为一个有趣的项目，我正在为 Google Chrome 扩展程序创建一个“黑暗模式”内容脚本。 I know the project might sound silly because of all the dark mode readers already available for all apps, but I am just trying to start small with the extensions and because I use the dark-mode reader so often, it seemed obvious to start with this.我知道这个项目可能听起来很傻，因为所有应用程序都已经提供了所有暗模式阅读器，但我只是试图从扩展开始，而且因为我经常使用暗模式阅读器，所以从这个开始似乎很明显.
The content-script itself hasn't caused me much issue, but I am running into trouble between the time it takes for the page to load and the content-script to run.内容脚本本身并没有给我带来太多问题，但是我在页面加载和内容脚本运行之间遇到了麻烦。 Although there is a very small difference in time, it is annoying to briefly see a bright-white page when I'm in the dark before the content-script activates to make everything dark again.虽然时间上的差异很小，但在内容脚本激活以使所有内容再次变暗之前，当我处于黑暗中时，短暂地看到一个亮白色的页面是很烦人的。 I understand that there is this command that I can add to the manifest:我知道有这个命令可以添加到清单中：
"run_at": "document_start",
but this ends up causing no changes to the page.但这最终导致页面没有变化。 It seems that running at "document_start" might not give time for all the HTML to load, thereby preventing the script from actually changing anything.似乎在"document_start"处运行可能不会给所有 HTML 加载时间，从而阻止脚本实际更改任何内容。 Does anyone have any advice to at least give an illusion of the content-script running immediately so I don't see the original page and then the content-script modified page?有没有人有任何建议至少给人一种内容脚本立即运行的错觉，所以我看不到原始页面，然后是内容脚本修改页面？ I want the changes to be more seamless and I don't notice the page actively changing if that makes sense.我希望更改更加无缝，如果有意义的话，我不会注意到页面会主动更改。
1 个解决方案
解决方案1
-1 2020-06-03 03:45:17
Why don't you try by keeping the script tag at the bottom of the body tag.为什么不尝试将脚本标记保留在正文标记的底部。
<body>
.
.
<script>
</script>
<body>
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