vue中websocket心跳写法

先来参考别人的

https://www.jianshu.com/p/09b91b9a778f

https://www.jianshu.com/p/ab47f613e8c6

 https://blog.csdn.net/hailangtuteng/article/details/87690056

博客与解释心跳原理的

https://www.cnblogs.com/tugenhua0707/p/8648044.html