版本：3.4.0
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.0/core.js
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.0/jquery.js
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.0/jquery.min.js
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.0/jquery.slim.js
- https://cdn.bootcdn.net/ajax/libs/jquery/3.4.0/jquery.slim.min.js