The JS and CSS files have been referenced correctly, but when you click on the question list and other options in the sidebar, the corresponding tab page is not displayed on the right. Just clicked the sidebar option and nothing happened.
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If all files are referenced normally, you can try clearing the browser's cache and trying to access the page again. If it still doesn't work, you can press f12 to check and look at the error message
Is the js you are using native or other frameworks? Whether the click binding event is correctly mapped? Check to see if there are any errors during debugging.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
