updata

src/components/exam/question.vue

@@ -212,7 +212,7 @@ export default {
     },
     // 问答题回答
     QAChange(pId, cId, length) {
-      if (length < 500) {
+      if (length.length < 500) {
         this.questionParams.answerRecord[pId]
           ? this.questionParams.answerRecord[pId][cId]
             ? this.questionParams.answerRecord[pId][cId].answer = [this.questionData.textContent]