JQ加通根目录下的文件为什么会有跨域

Question

Access to XMLHttpRequest at 'file:///Users/saonianiphone6/Desktop/YK-SEM/sem-web/js/strings.properties?_=1603856497824' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, chrome-untrusted, https.

Answer 1

要测试 ajax 的话，最好是本地起一个服务器，提供 http 服务。

Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, chrome-untrusted, https.

翻译成中文就是：

跨域请求仅支持下面几种协议： http, data, chrome, chrome-extension, chrome-untrusted, https。

本地文件的协议头是 file ，要知道允许网页直接读取本地文件是一件非常危险的事情。