### 添加标签，判断是否登录 ``` <span id="login-tag" data-is-login="1" style="display: none"></span> ``` ### 通过ajax传递数据 ``` $(function () { $('#comment-btn').click(function (event) { event.preventDefault(); var loginTag = $('#login-tag').attr("data-is-login"); // console.log(loginTag); if (!loginTag) { window.location = '/signin/'; }else{ var content = window.ue.getContent(); var post_id = $("#post-content").attr('data-id'); zlajax.post({ 'url':'/acomment/', 'data':{ 'content':content, 'post_id':post_id, }, 'success':function (data) { if(data['code'] == 200) { window.location.reload(); } else{ zlalert.alertInfo(data["message"]); } }, 'fail':function () { zlalert.alertNetworkError(); } }); } }); }); ```