三级面包屑回跳问题

src/components/breadcrumb.vue

@@ -3,7 +3,7 @@
         <el-breadcrumb separator="/">
             <el-breadcrumb-item>{{curmbFirst}}</el-breadcrumb-item>
             <el-breadcrumb-item v-if="curmbSecond" :to="{ path:  jumPathThird }">{{curmbSecond}}</el-breadcrumb-item>
-            <el-breadcrumb-item v-if="curmbThird">{{curmbThird}}</el-breadcrumb-item>
+            <el-breadcrumb-item v-if="curmbThird"  :to="{ path:  jumPathFouth }">{{curmbThird}}</el-breadcrumb-item>
             <el-breadcrumb-item v-if="curmbFouth">{{curmbFouth}}</el-breadcrumb-item>
         </el-breadcrumb>
     </div>
@@ -25,6 +25,9 @@ export default {
         },
         jumPathThird: {
             type: String
+        },
+        jumPathFouth: {
+            type: String
         }
     }
 }

src/views/learning/name-list.vue

 <template>
   <div class="name-list-wrap">
-    <bread-crumb :curmbFirst="curmbFirst" :curmbSecond="curmbSecond" :curmbThird="curmbThird" :curmbFouth="curmbFouth" :jumPathThird="jumPathThird"></bread-crumb>
+    <bread-crumb :curmbFirst="curmbFirst" :curmbSecond="curmbSecond" :curmbThird="curmbThird" :curmbFouth="curmbFouth" :jumPathThird="jumPathThird" :jumPathFouth="jumPathFouth"></bread-crumb>
     <div class="component-content screenSet" id="screenSet">
       <p class="course-p">地区：{{ queryData.region }}</p>
       <p class="course-p">选择机构：{{ queryData.organization }}</p>
@@ -133,8 +133,9 @@ export default {
       curmbFirst: "学情报告",
       curmbSecond: "项目管理",
       curmbThird: "",
-      curmbFouth: "课程培训情况",
+      curmbFouth: "",
       jumPathThird: "/report-list",
+      jumPathFouth: "",
       formData: {
         doctorName: "",
         learnFlag: -1,
@@ -197,6 +198,7 @@ export default {
       vm.queryData = this.$route.query;
       vm.tableType = vm.queryData.tableType;
       vm.curmbThird = vm.getUrlSearch(window.location.href, "projectName");
+      vm.jumPathFouth = '/item-list?id=' + vm.queryData.projectId + '&projectName=' + vm.queryData.projectName;
       console.log("queryData", vm.queryData);
       if(vm.queryData.type == 4) {
         vm.getHostital();
@@ -209,6 +211,7 @@ export default {
     search() {
       let query = this.queryData;
       if (this.tableType == 1) {
+        vm.curmbFouth = "课程培训情况";
         //课程分析
         // console.log('this.tableType',this.tableType)
         let req = {
@@ -237,6 +240,7 @@ export default {
           }
         });
       } else if (this.tableType == 2) {
+        vm.curmbFouth = "考试培训情况";
         //考试分析
         let reqRank = {
           projectId: query.projectId,