As shown
F12 to see if there is an error
There must be something wrong with your judgment conditions. Print out what the judgment conditions are
![QJ)B80O]IP]M$UARLLOUDHX.jpg](https://pnpimg.jiaoben.net/upload/image/933/510/247/1565667096478037.jpg "1565667096478037.jpg")
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
F12 to see if there is an error
There must be something wrong with your judgment conditions. Print out what the judgment conditions are