来自:它说要使用 document-element-inserted ，这将确保您的脚本在页面脚本运行之前运行.

It says to use document-element-inserted, this will ensure your script runs before the page scripts run.

我对框架脚本没有太多的经验，其他人将不得不对此进行验证.

I don't have much experience with frame scripts, others will have to verify me on this.