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