版本：3.4.1
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/core.
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.slim.
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.slim.min.