Useful functions that can be used with @require in scripts
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/11420/65734/My%20HELPER%20functions.js
Useful functions that help working with DOM, URL, etc. that I use for my own scripts.
See the code section to see all the functions. Most of descriptions are in french though.
