欢迎选择我的课程，让我们一起见证您的进步~~
nodejs is single-process and single-threaded
To define global variables in Node, use global http://www.runoob.com/nodejs/...
It is strongly not recommended to do this. It is okay for beginners to understand, but it is ok after trying it. Please abandon this idea as soon as possible and use another solution
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
nodejs is single-process and single-threaded
To define global variables in Node, use global http://www.runoob.com/nodejs/...
It is strongly not recommended to do this. It is okay for beginners to understand, but it is ok after trying it. Please abandon this idea as soon as possible and use another solution