修改动态头像

图片地址：

代码：

var ajax = new XMLHttpRequest();  
ajax.open('post','[![](https://p3-xtjj-sign.byteimg.com/tos-cn-i-73owjymdk6/afba66765ab04510938847169654d215~tplv-73owjymdk6-jj-mark-v1:0:0:0:0:5o6Y6YeR5oqA5pyv56S-5Yy6IEAg5bey5rOo6ZSA:q75.awebp?rk3s=f64ab15b&x-expires=1771470753&x-signature=yeS4Hye2hBYVPy%2FgUyEMTekCdjg%3D)juejin.cn](https://juejin.cn/web/user/update/user_info/ "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-xtjj-sign.byteimg.com/tos-cn-i-73owjymdk6/3ad5ab0673dd4397be2f4888e78e6742~tplv-73owjymdk6-jj-mark-v1:0:0:0:0:5o6Y6YeR5oqA5pyv56S-5Yy6IEAg5bey5rOo6ZSA:q75.awebp?rk3s=f64ab15b&x-expires=1771470753&x-signature=oVkVJ1Dab9uIFOWtDFYvAKjFPhk%3D)p1-juejin.byteimg.com](https://link.juejin.cn/?target=https%3A%2F%2Fp1-juejin.byteimg.com%2Ftos-cn-i-k3u1fbpfcp%2F07504cebe01f4b938bb217931abcae06~tplv-k3u1fbpfcp-watermark.image "https://p1-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/07504cebe01f4b938bb217931abcae06~tplv-k3u1fbpfcp-watermark.image")");  
ajax.onreadystatechange = function (){  
if(ajax.readyState==4&&ajax.status==200){  
var c = ajax.responseText;  
console.log(c)  
}  
}