code: function (Counter, o) {
      let newCounter = new Counter();
      let acl = new AV.ACL();
      acl.setPublicReadAccess(true);
      acl.setPublicWriteAccess(true);
      newCounter.setACL(acl);
      newCounter.set('url', o.url)
      newCounter.set('xid', o.xid)
      newCounter.set('title', o.title)
      newCounter.set('time', 1)
      newCounter.save().then(ret => {
          Utils.find(o.el, '.leancloud-visitors-count').innerText = 1
      }).catch(ex => {
          console.log(ex)
      });
  }
docs: 新建Counter对象