vue路由跳转问题？

Question

  const newRoute = {  
                    path: '/new-route',  
                    component: () => import('@/views/helpPreview/index.vue'),  
                  };
    this.$router.addRoute(newRoute);  
    this.$router.push({path: '/new-route', query:{item:item}})

在组件内部新增路由，并且跳转到这个路由，在vue系统的路由标签页中显示组件，为什么这种方式不显示呢？
vue系统标签页

Answer 1

试试这个demo,我从element-ui官网借鉴写的:
https://element.eleme.cn/#/zh-CN/component/tabs

<script>
export default {
  data() {
    return {
      editableTabsValue: '2',
      editableTabs: [{
        title: 'Tab 1',
        name: '1',
        content: 'Tab 1 content'
      }, {
        title: 'Tab 2',
        name: '2',
        content: 'Tab 2 content'
      }],
      tabIndex: 2
    }
  },
  methods: {
    handleTabsEdit(targetName, action) {
      if (action === 'add') {
        let newTabName = ++this.tabIndex + '';
        this.editableTabs.push({
          title: 'New Tab',
          name: newTabName,
          content: 'New Tab content'
        });
        this.editableTabsValue = newTabName;
      }
      if (action === 'remove') {
        let tabs = this.editableTabs;
        let activeName = this.editableTabsValue;
        if (activeName === targetName) {
          tabs.forEach((tab, index) => {
            if (tab.name === targetName) {
              let nextTab = tabs[index + 1] || tabs[index - 1];
              if (nextTab) {
                activeName = nextTab.name;
              }
            }
          });
        }
        this.editableTabsValue = activeName;
        this.editableTabs = tabs.filter(tab => tab.name !== targetName);
      }
    },
    goToNewRoute() {
      let router = this.$router;
      const newRoute = {
        path: '/new-route',
        component: () => import('@/views/index.vue'),
      };
      router.addRoute(newRoute);
      let newTabName = ++this.tabIndex + '';
      this.editableTabs.push({
        title: '我是新增路由的标签标题',
        name: newTabName,
      });
      this.editableTabsValue = newTabName;
      router.push({ path: '/new-route', query: { item: "参数值" } });
    }
  }
}
</script>

<template>
  <div class="greetings">
    <el-tabs v-model="editableTabsValue" type="card" editable @edit="handleTabsEdit">
      <el-tab-pane :key="item.name" v-for="(item, index) in editableTabs" :label="item.title" :name="item.name">
        <div v-if="item.content">
          {{ item.content }}
        </div>
        <router-view></router-view>
      </el-tab-pane>
    </el-tabs>
    <el-button @click="goToNewRoute">点我去新增路由</el-button>
  </div>
</template>

<style lang="css" scoped>
h1 {
  font-weight: 500;
  font-size: 2.6rem;
  top: -10px;
}

h3 {
  font-size: 1.2rem;
}

.greetings h1,
.greetings h3 {
  text-align: center;
}

@media (min-width: 1024px) {

  .greetings h1,
  .greetings h3 {
    text-align: left;
  }
}
</style>

============我是分割线==================