fetch 跨域

Question

用fetch 请求数据，存在跨域报错，添加mode后依旧报错，怎么能够正确跨域，后端已经设置Access-Control-Allow-Origin:*

Answer 1

result.then(res => res.json()).then(data => console.log(data))

Answer 2

chrome并且本地调试的话可以装个插件 Allow-Control-Allow-Origin: *