Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 网页浏览器 mui ajax 调用服务器地址时报上面错误,网上说 跨域问题,”调试的时候chrome控制台报错,然后给c
错误例子: error: command 'cc' failed with exit status 1 clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future] clang: note: this will be a hard error (cannot be downgraded to a warning) in the fu