vue-router active-class 进入当前菜单的样式

App.vue

<template>
  <div id="nav">
    <!-- 导航 -->
    <router-link to="/" active-class="current">Home</router-link> |
    <router-link to="/about" active-class="current">About</router-link> |
    <router-link to="/test1_bak">Test1_bak</router-link> |
    <router-link to="/test1">Test1</router-link> |
    <router-link to="/test2">Test2</router-link>
  </div>
  <!-- 路由出口 -->
  <router-view/>
</template>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
}

#nav {
  padding: 10px;
  background-color: lightskyblue;
}

#nav a {
  font-weight: bold;
  color: #2c3e50;
}

/* 默认选中样式类 */
#nav a.router-link-exact-active {
  color:orangered;
}

.current{
  font-size: 24px;
  font-weight: bolder;
}
</style>

index.js

const router = createRouter({
  history: createWebHashHistory(),
  linkActiveClass:'current',
  routes
})