版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/network-js/2.1.0/network.js
- https://cdn.bootcdn.net/ajax/libs/network-js/2.1.0/network.js.map
- https://cdn.bootcdn.net/ajax/libs/network-js/2.1.0/network.min.js
- https://cdn.bootcdn.net/ajax/libs/network-js/2.1.0/network.min.js.map