我调用这个接口，为啥出现这种错误？
来源：3-3 Koa 中间件与洋葱模型
edgar_programmer
2021-05-14
Access to fetch at ‘http://api.github.com/users’ from origin ‘http://localhost:3000’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.
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lewis
2021-05-14
跨域了，别在浏览器里调用
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