Vue3 动态子页面和菜单栏同步

动态子页面

<router-view></router-view>显示子页面的内容

main.vue

<template>
  <a-layout id="components-layout-demo-top-side">
    <the-header-view></the-header-view>
    <a-layout style="padding: 24px 0; background: #fff">
      <the-sider-view></the-sider-view>
      <a-layout-content :style="{ padding: '0 24px', minHeight: '280px' }">
<!--        <p>会员总数: {{ count }}</p>-->
<!--        <button @click="handleCount">Refresh Count</button>-->
        <router-view></router-view>
      </a-layout-content>
    </a-layout>
<!--    <a-layout-content style="padding: 0 50px">-->
<!--      <a-breadcrumb style="margin: 16px 0">-->
<!--        <a-breadcrumb-item>Home</a-breadcrumb-item>-->
<!--        <a-breadcrumb-item>List</a-breadcrumb-item>-->
<!--        <a-breadcrumb-item>App</a-breadcrumb-item>-->
<!--      </a-breadcrumb>-->
<!--      -->
<!--    </a-layout-content>-->
<!--    <a-layout-footer style="text-align: center">-->
<!--      Ant Design 2018 Created by Ant UED-->
<!--    </a-layout-footer>-->
  </a-layout>
</template>

<script>
import { defineComponent } from 'vue';
import TheHeaderView from "@/components/the-header";
import TheSiderView from "@/components/the-sider";

export default defineComponent({
  components: {
    TheSiderView,
    TheHeaderView,
  },
  setup() {
    return {
    };
  },
});
</script>

<style>
#components-layout-demo-top-side .logo {
  float: left;
  width: 120px;
  height: 31px;
  margin: 16px 24px 16px 0;
  background: rgba(255, 255, 255, 0.3);
}

.ant-row-rtl #components-layout-demo-top-side .logo {
  float: right;
  margin: 16px 0 16px 24px;
}

.site-layout-background {
  background: #fff;
}
</style>

实现效果：



其中header和sider是先前封装的组件

router中显示的就是子页面http://localhost:9001/welcome的内容

给header和sider组件添加menu

menu

<a-menu-item key="/welcome">
        <router-link to="/welcome">
          <coffee-outlined /> &nbsp; 欢迎
        </router-link>
      </a-menu-item>
      <a-menu-item key="/passenger">
        <router-link to="/passenger">
          <user-outlined /> &nbsp; 乘车人管理
        </router-link>
      </a-menu-item>

header

<template>
  <a-layout-header class="header">
    <div class="logo" />
    <div style="float: right; color: white;">
      您好：{{member.mobile}} &nbsp;&nbsp;
      <router-link to="/login" style="color: white;">
        退出登录
      </router-link>
    </div>
    <a-menu
        v-model:selectedKeys="selectedKeys1"
        theme="dark"
        mode="horizontal"
        :style="{ lineHeight: '64px' }"
    >
      <a-menu-item key="/welcome">
        <router-link to="/welcome">
          <coffee-outlined /> &nbsp; 欢迎
        </router-link>
      </a-menu-item>
      <a-menu-item key="/passenger">
        <router-link to="/passenger">
          <user-outlined /> &nbsp; 乘车人管理
        </router-link>
      </a-menu-item>
    </a-menu>
<!--    <div>{{member.mobile}}</div>-->
  </a-layout-header>
</template>

<script>
import {defineComponent, ref} from 'vue';
import store from "@/store";

export default defineComponent({
  name: "the-header-view",
  setup() {
    let member = store.state.member;
    return {
      selectedKeys1: ref(['2']),
      member
    };
  },
});
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>

</style>

sider

<template>
  <a-layout-sider width="200" style="background: #fff">
    <a-menu
        v-model:selectedKeys="selectedKeys2"
        v-model:openKeys="openKeys"
        mode="inline"
        style="height: 100%"
    >
      <a-menu-item key="/welcome">
        <router-link to="/welcome">
          <coffee-outlined /> &nbsp; 欢迎
        </router-link>
      </a-menu-item>
      <a-menu-item key="/passenger">
        <router-link to="/passenger">
          <user-outlined /> &nbsp; 乘车人管理
        </router-link>
      </a-menu-item>
      <a-sub-menu key="sub1">
        <template #title>
                <span>
                  <user-outlined />
                  subnav 11
                </span>
        </template>

      </a-sub-menu>
      <a-sub-menu key="sub2">
        <template #title>
                <span>
                  <laptop-outlined />
                  subnav 2
                </span>
        </template>
        <a-menu-item key="5">option5</a-menu-item>
        <a-menu-item key="6">option6</a-menu-item>
        <a-menu-item key="7">option7</a-menu-item>
        <a-menu-item key="8">option8</a-menu-item>
      </a-sub-menu>
      <a-sub-menu key="sub3">
        <template #title>
                <span>
                  <notification-outlined />
                  subnav 3
                </span>
        </template>
        <a-menu-item key="9">option9</a-menu-item>
        <a-menu-item key="10">option10</a-menu-item>
        <a-menu-item key="11">option11</a-menu-item>
        <a-menu-item key="12">option12</a-menu-item>
      </a-sub-menu>
    </a-menu>
  </a-layout-sider>
</template>

<script>
import {defineComponent, ref} from 'vue';

export default defineComponent({
  name: "the-sider-view",
  setup() {

    return {
      selectedKeys2: ref(['1']),
      openKeys:ref(['sub1'])
    };
  },
});
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>

</style>

实现效果：





但是，这时的header和sider的菜单显示并不同步，还会出现菜单与内容不符的问题

为解决这个问题，在header和sider中分别编写watch，监视地址的router地址的变化

watch

const selectedKeys = ref([]);

    watch(() => router.currentRoute.value.path, (newValue) => {
      console.log('watch', newValue);
      selectedKeys.value = [];
      selectedKeys.value.push(newValue);
    }, {immediate: true});

header

<template>
  <a-layout-header class="header">
    <div class="logo" />
    <div style="float: right; color: white;">
      您好：{{member.mobile}} &nbsp;&nbsp;
      <router-link to="/login" style="color: white;">
        退出登录
      </router-link>
    </div>
    <a-menu
        v-model:selectedKeys="selectedKeys"
        theme="dark"
        mode="horizontal"
        :style="{ lineHeight: '64px' }"
    >
      <a-menu-item key="/welcome">
        <router-link to="/welcome">
          <coffee-outlined /> &nbsp; 欢迎
        </router-link>
      </a-menu-item>
      <a-menu-item key="/passenger">
        <router-link to="/passenger">
          <user-outlined /> &nbsp; 乘车人管理
        </router-link>
      </a-menu-item>
    </a-menu>
<!--    <div>{{member.mobile}}</div>-->
  </a-layout-header>
</template>

<script>
import {defineComponent, ref, watch} from 'vue';
import store from "@/store";
import router from "@/router";

export default defineComponent({
  name: "the-header-view",
  setup() {
    let member = store.state.member;
    const selectedKeys = ref([]);

    watch(() => router.currentRoute.value.path, (newValue) => {
      console.log('watch', newValue);
      selectedKeys.value = [];
      selectedKeys.value.push(newValue);
    }, {immediate: true});

    return {
      selectedKeys,
      member
    };
  },
});
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>

</style>

sider

<template>
  <a-layout-sider width="200" style="background: #fff">
    <a-menu
        v-model:selectedKeys="selectedKeys"
        v-model:openKeys="openKeys"
        mode="inline"
        style="height: 100%"
    >
      <a-menu-item key="/welcome">
        <router-link to="/welcome">
          <coffee-outlined /> &nbsp; 欢迎
        </router-link>
      </a-menu-item>
      <a-menu-item key="/passenger">
        <router-link to="/passenger">
          <user-outlined /> &nbsp; 乘车人管理
        </router-link>
      </a-menu-item>
      <a-sub-menu key="sub1">
        <template #title>
                <span>
                  <user-outlined />
                  subnav 11
                </span>
        </template>

      </a-sub-menu>
      <a-sub-menu key="sub2">
        <template #title>
                <span>
                  <laptop-outlined />
                  subnav 2
                </span>
        </template>
        <a-menu-item key="5">option5</a-menu-item>
        <a-menu-item key="6">option6</a-menu-item>
        <a-menu-item key="7">option7</a-menu-item>
        <a-menu-item key="8">option8</a-menu-item>
      </a-sub-menu>
      <a-sub-menu key="sub3">
        <template #title>
                <span>
                  <notification-outlined />
                  subnav 3
                </span>
        </template>
        <a-menu-item key="9">option9</a-menu-item>
        <a-menu-item key="10">option10</a-menu-item>
        <a-menu-item key="11">option11</a-menu-item>
        <a-menu-item key="12">option12</a-menu-item>
      </a-sub-menu>
    </a-menu>
  </a-layout-sider>
</template>

<script>
import {defineComponent, ref, watch} from 'vue';
import router from "@/router";

export default defineComponent({
  name: "the-sider-view",
  setup() {
    const selectedKeys = ref([]);

    watch(() => router.currentRoute.value.path, (newValue) => {
      console.log('watch', newValue);
      selectedKeys.value = [];
      selectedKeys.value.push(newValue);
    }, {immediate: true});

    return {
      selectedKeys,
      openKeys:ref(['welcome'])
    };
  },
});
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>

</style>

效果：