The same folder is under www. Just changing the names (a and demo) caused problems.
Microfive2018-05-08 16:42:50
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In the www file in PHPstudy, the saved folder demo does not display properly when opened in the browser, but when the folder name is changed to a, the picture displays normally again
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Visual inspection is that the image file address of your page is hard-coded, resulting in only one of them being displayed correctly
One file has this image, one does not, or it is the browser cache
The path is wrong