修复 ckeditor

client/client/components/player/exam/exam.vue

@@ -294,11 +294,12 @@ export default {
     },
     initckeditor () {
       if (!this.exam.shortAnswerList) { return }
+      /* 删除所有 ckeditor 实例 */
+      let instances = CKEDITOR.instances
+      for (let name in instances) { instances[name].destroy() }
       for (let i = 0; i < this.exam.shortAnswerList.length; i++) {
-        let instances = CKEDITOR.instances
-        let tmpEditor = null
         if (!instances['editor-exam' + i]) {
-          tmpEditor = CKEDITOR.replace('editor-exam' + i, {
+          CKEDITOR.replace('editor-exam' + i, {
             height: 300,
             uiColor: '#eeeeee',
             filebrowserImageUploadUrl: '/api/ckeditor/img/upload',
@@ -319,7 +320,7 @@ export default {
             ]
           })
         }
-        this.exam.shortAnswerList[i].ckeditor = tmpEditor || instances['editor-exam' + i]
+        this.exam.shortAnswerList[i].ckeditor = instances['editor-exam' + i]
       }
     },
     /**