如果查询参数在vue-router中没有值，我怎么能不显示它呢？

<template>
  <div>
    <div v-if="$route.query.param">显示的内容</div>
  </div>
</template>

const routes = [
  {
    path: '/example',
    redirect: to => {
      if (!to.query.param) {
        return '/other';
      }
    }
  },
  {
    path: '/other',
    component: OtherComponent
  }
];

methods: {
  redirectToOther() {
    if (!this.$route.query.param) {
      this.$router.push('/other');
    }
  }
}