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【前端成长之路】什么是跨域 #13

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AmamiyaCx opened this issue Sep 4, 2022 · 0 comments

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AmamiyaCx commented Sep 4, 2022

什么是跨域

由于浏览器的同源策略影响，当请求源与请求地址存在协议、域名、端口有任何一个不同时，就会引起跨域

注意：跨域是浏览器引起的

例如：

请求源	请求地址	是否跨域
http://localhost:3000	http://localhost:3001	是，端口不同
https://www.baidu.a.com	https://www.baidu.b.com	是，域名不同
http://localhost:3000	https://localhost:3000	是，协议不同
http://localhost:3000	http://localhost:3000/api	否

怎么解决跨域

JSONP
Nginx代理
CORS

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