Like the title, load the page-you can get the parent element--but you can't get the child nodes below
Use ref to get it.
The problem has been solved due to the order of initialization data execution
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Use ref to get it.
The problem has been solved due to the order of initialization data execution