Vuejs: Event on route change

Question

Setup a watcher on the $route in your component like this:

watch:{
    $route (to, from){
        this.show = false;
    }
} 

This observes for route changes and when changed ,sets show to false

If you are using v2.2.0 then there is one more option available to detect changes in $routes.

To react to params changes in the same component, you can watch the $route object:

const User = {
  template: '...',
  watch: {
    '$route' (to, from) {
      // react to route changes...
    }
  }
}

Or, use the beforeRouteUpdate guard introduced in 2.2:

const User = {
  template: '...',
  beforeRouteUpdate (to, from, next) {
    // react to route changes...
    // don't forget to call next()
  }
}

Reference: https://router.vuejs.org/en/essentials/dynamic-matching.html

Just in case anyone is looking for how to do it in Typescript, here is the solution:

@Watch('$route', { immediate: true, deep: true })
onUrlChange(newVal: Route) {
    // Some action
}

And yes as mentioned by @Coops below, please do not forget to include :

import { Watch } from 'vue-property-decorator';

Edit: Alcalyn made a very good point of using Route type instead of using any:

import { Watch } from 'vue-property-decorator';    
import { Route } from 'vue-router';

Watcher with the deep option didn't work for me.

Instead, I use updated() lifecycle hook which gets executed everytime the component's data changes. Just use it like you do with mounted().

mounted() {
   /* to be executed when mounted */
},
updated() {
   console.log(this.$route)
}

For your reference, visit the documentation.