答案可以在上面给出。我也遇到过同样的问题，但无法解决。确保添加外部js文件为

<script src="main.js"></script>

In my case, same error was coming with JSP. This is how I got to the root of this issue: I went to the Network tab and clearly saw that the browser request to fetch the css was returning response header having "Content-type" : "text/html". I opened another tab and manually hit the request to fetch the css. It ended up returning a html log in form. Turns out that my web application had a url mapping for path = / Tomcat servlet entry : (@WebServlet({ "/, /index", }). So, any unmatching request URLs were somehow being matched to / and the corresponding servlet was returning a Log in html form. I fixed it by removing the mapping to /

此外，tomcat配置wrt处理css MIME-TYPE已经存在。

我在恢复一个旧的MEAN堆栈项目时遇到了同样的问题。我使用nodemon作为我的本地开发服务器，得到了相同的错误资源解释为样式表，但使用MIME类型text/html传输。我从nodemon更改为http-server，可以在这里找到。它立刻对我起了作用。

我的问题比这篇文章中的所有答案都要简单。

我必须设置IIS以包含静态内容。

这是因为您必须将内容类型设置为文本/html而不是文本/css为您的服务器页面(php,node.js等)

如果nodejs和使用express 下面的代码工作…

res.set('Content-Type', 'text/css');