XMLHttpRequest cannot load . No 'Access-Control-Allow-Origin'

Question

XMLHttpRequest cannot load http://media.learn.baidu.com/v1/kanbaidu/v/dbcb567e-9631-4ddb-a6ef-02fe2e9f…2F-1%2F%2F105d050e6f1736f7f5dc82ca691a5c12d98360feb0b7befd2a03bd0ca4e6a26d. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:5678' is therefore not allowed access.
前端怎么解决跨域问题啊？？求助！

Answer 1

后端允许你访问就好了呀