1.前端页面使用vue中的axios请求nodejs响应.报以下错误: Failed to load http://localhost:3000/users/validate: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://loc
1.前言 静态页面 加载 <script type="module" > 报CORS 跨域错误,提示Access to script at ftp:///xxx.js from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, ch