vue2-使用watch監聽路由的變化

watch:{
  $route(to,from){
    console.log(to.path);
  }
}

watch: {
  '$route':'getPath'
},
methods: {
  getPath(){
    console.log(this.$route.path);
  }
}

watch: {
  $route: {
    handler: function(val, oldVal){
      console.log(val);
    },
    // 深度觀察監聽
    deep: true
  }
}