Merge branch '00-formal'

src/components/detail/index.js

@@ -344,6 +344,7 @@ class Detail extends Component {
                     document.title = `${course_info.course_title} - 七月在线`;
                     if (course_info.group_status === 3 || course_info.group_status === 4) {
                         let endTime = course_info.pdd_group_info.groupon_member.end_time;
+                        if(endTime && endTime > 0) {
                             let date = endTime * 1000,
                                 hours = 0,
                                 minutes = 0,
@@ -358,6 +359,7 @@ class Detail extends Component {
                                 });
                             }, 1000)
                         }
+                    }
                     wxShare({
                         title: course_info.course_title,
                         desc: course_info.index_description,