程序进入后台后，如何能保持定位功能一直在工作？？？？？
学习是最好的投资！
https://segmentfault.com/q/1010000004817...
should be similar to my answer
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
https://segmentfault.com/q/1010000004817...
should be similar to my answer