优化答题

src/pages/exam/mockExam/exam/index.vue

@@ -23,6 +23,7 @@
         </div>
       </div>
       <div class="foot" id="foot-h">
+        <template v-if="Object.values(beforeChangeData).length">
           <div class="exam-btn">
             <div
               @click="changeIndex('prev')"
@@ -39,13 +40,16 @@
               <div class="txt">{{ questionParams.question.isCollection ? '已收藏' : '收藏' }}</div>
             </div>
             <div class="sign2" @click="setSign" v-if="!$route.query.id">
-            <div :class="questionParams.question.sign ? 'icon active' : 'icon'"></div>
-            <div class="txt">{{ questionParams.question.sign ? '已标记' : '标记' }}</div>
+              <div :class="isSignText() ? 'icon active' : 'icon'"></div>
+              {{questionParams.answerRecord[questionParams.question.question_item_id][questionParams.id]}}
+              <div class="txt">{{isSignText() ? '已标记' : '标记'}}</div>
+              <!-- answerRecord -->
             </div>
             <div class="end-exam-btn">
               <div class="btn" @click="endExam" v-if="!$route.query.id">交卷</div>
             </div>
           </div>
+        </template>
       </div>
     </div>
   </div>
@@ -105,6 +109,19 @@ export default {
     this.getTopic()
   },
   methods: {
+    isSignText() {
+      let flag = false
+      const ansRecord = this.questionParams.answerRecord
+      const qData = this.questionParams.question
+      ansRecord[qData.question_item_id]
+        ? ansRecord[qData.question_item_id][qData.id]
+          ? ansRecord[qData.question_item_id][qData.id].sign
+            ? flag = true
+            : flag = false
+          : flag = false
+        : flag = false
+      return flag
+    },
     // 收藏试题
     collectQuestion() {
       const data = this.questionParams.question