update

src/components/pages/addCourse.vue

@@ -4435,7 +4435,7 @@ export default {
           let _unitJson2 = JSON.parse(JSON.stringify(this.unitJson));
           let _unitJson = [];
           let _chapAarry = [];
-          let _unitIndex = this.unitIndex;
+          let _unitIndex = JSON.parse(JSON.stringify(this.unitIndex));
           let index = 1;
           let chapindex;
           if (_unitJson2.length > unitJson.length) {
@@ -4515,23 +4515,23 @@ export default {
               this.isDelete = 2;
               this.unitIndex--;
             } else if (
-              _unitJson2[this.unitIndex].chapterInfo[0].chapterid !=
-              _unitJson[this.unitIndex].chapterInfo[0].chapterid
+              _unitJson2[_unitIndex].chapterInfo[0].chapterid !=
+              _unitJson[_unitIndex].chapterInfo[0].chapterid
             ) {
               this.isDelete = 2;
               for (let n = 0; n < _unitJson.length; n++) {
                 if (
-                  _unitJson2[this.unitIndex].chapterInfo[0].chapterid ==
+                  _unitJson2[_unitIndex].chapterInfo[0].chapterid ==
                   _unitJson[n].chapterInfo[0].chapterid
                 ) {
                   this.unitIndex = n;
-                  _unitJson[n] = _unitJson2[this.unitIndex];
+                  _unitJson[n] = _unitJson2[_unitIndex];
                   break;
                 }
               }
             }
           } else if (index != 2) {
-            _unitJson[this.unitIndex] = _unitJson2[this.unitIndex];
+            _unitJson[this.unitIndex] = _unitJson2[_unitIndex];
           }
           if (index == 1) {
             this.unitJson = _unitJson;