CORS是ajax跨域请求的一个解决方案,详细见:css
浏览器同源政策及其规避方法
跨域资源共享 CORS 详解html
ajax能够设置请求头,和get响应头。jquery
jQuery and AJAX response header
How can I add a custom HTTP header to ajax request with js or jQuery?git
先感觉一下,编写index.html:github
<!DOCTYPE html> <html> <head> <title>test</title> </head> <body> <button id="test">click</button> <script src="//cdn.bootcss.com/jquery/3.1.0/jquery.min.js"></script> <script> $('#test').on('click', function(){ console.log('click me'); var url = 'https://api.github.com/users/octocat/gists'; var geturl = $.ajax({ type: "GET", url: 'https://api.github.com/users/octocat/gists', success: function (data) { console.log('header:\n', geturl.getAllResponseHeaders()); console.log('data:\n', data); } }); }); </script> </body> </html>
npm安装http-server模块,在index.html目录下执行http-server命令,浏览器打开 http://127.0.0.1:8080/
,点击按钮,看下console的输出:ajax
这个响应头是被过滤过的,另外原则上是没法获取Set-cookie的值。 见How to get a cookie from an AJAX response? 。npm
jQuery如何获取响应头: http://api.jquery.com/jQuery.ajax/#jqXHRapi