Greasy Fork is available in English.
Contains several functions for injecting html/js/css
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.org/scripts/40894/266335/%5BLIBRARY%5D%20InjectorLib.js
This is a library.
Use it with @require in your code.
Functions:
inject_srcjs(url)
inject_rawjs(js_code)
inject_headhtml(html_code)
inject_bodyhtml(html_code)
inject_customhtml(html_code, appendafter)
inject_globalcss(css_string)