fix 开考时间本机时间差异

src/features/OnlineExam/OnlineExamList.vue

@@ -164,7 +164,7 @@ export default {
     },
     async raceEnter(course) {
       const minutesAfterCourseStart = Math.floor(
-        moment(this.getNow()).diff(moment(course.startTime), "seconds") / 30
+        moment(this.now).diff(moment(course.startTime), "seconds") / 30
       );
 
       window._hmt.push([
@@ -223,6 +223,14 @@ export default {
         this.enterExam(course);
         // return true;
       } else {
+        window._hmt.push([
+          "_trackEvent",
+          "在线考试列表页面",
+          "摇号进入考试-courseId-" + course.examId,
+          minutesAfterCourseStart < 120
+            ? minutesAfterCourseStart / 2 + "分被限流"
+            : "60分后被限流",
+        ]);
         this.$Modal.warning({
           title: "提示",
           content: "考试人员过多，请稍等2分钟再试。",