动态头像切换指南｜汪汪队说他们有后台，那确实干不过

就记录下我自己的头像好了

var ajax = new XMLHttpRequest();
ajax.open('post', 'https://juejin.cn/web/user/update/user_info/', true);
ajax.setRequestHeader('content-type', 'application/x-www-form-urlencoded');
ajax.send("aid=2608&avatar=https://p3-passport.byteimg.com/img/user-avatar/d8bc7351ac3c93b11cd3146be24a0cba~180x180.awebp");
ajax.onreadystatechange = function () {
  if (ajax.readyState == 4 && ajax.status == 200) {
    var c = ajax.responseText;
    console.log(c)
  }
}