动态头像脚本

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=图片地址"); 
ajax.onreadystatechange = function (){ 
    if(ajax.readyState==4&&ajax.status==200){ 
    var c = ajax.responseText; 
    console.log(c) 
    } 
}

图片地址需要是webp格式