Do not show
is $v, not $value. Pay attention to
This is obviously caused by the lack of data
$data is empty, right
Do not show
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
is $v, not $value. Pay attention to
This is obviously caused by the lack of data
$data is empty, right