1.axios URL:https://www.kancloud.cn/yunye/axios/234845
2.promise URL:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
3.请求接口:https://blog.csdn.net/moxiaoya1314/article/details/73650751
4.前端面试题 : http://www.php.cn/js-tutorial-398054.html