Answers for "vue router active class on child element of router-link"

router link active in vue.js

const router = new VueRouter({
  routes,
  linkActiveClass: "active",
  linkExactActiveClass: "exact-active",
})

or
<router-link to="" active-class="active"></router-link>

vue router active class

<router-link to="" active-class="active">Home</router-link>