js python通信_Flask：JS与Python之间的通信

I have a system where people can add roles and remove roles from a list (This is what it looks like: https://s7.gifyu.com/images/idea9b50431c2edc0295.gif ) but want a way to save that data when the user clicks "Save". I was thinking I could use JS to get the contents of the ul and run a python function to save the data, but I can figure out how to do it. I've tried Passing data from javascript into Flask and Python Flask calling functions using buttons but couldn't get it working. The problem with the second one is that I couldn't pass data into the function.

这是ul的代码：

{% for role in modroles %}

-

{{role}}

{% endfor %}

我正在尝试保存角色名称({{role}})。

保存按钮在ul下方

我正在尝试将其保存在flask文件(运行flask /网站的python文件)中存储的字典中

如果需要，我可以提供其他信息。