<img src onclick="this.src='http://localhost:8081/captcha.jpg?uuid='+getUUID();"  title="看不清？点击换一张" id="yanZhengMa">

  function getUUID() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
      var r = Math.random() * 16 | 0,
              v = c == 'x' ? r : (r & 0x3 | 0x8);
      return v.toString(16);
    });
  }
我用这个实现了每次点击后，验证码都会变，而且后台存储了这个验证码和对应的uuid。可是再点“注册”的时候，uuid如何传给后台呢？谢谢
--
FROM 120.242.253.*