vue鼠标划过移入移出触发函数介绍

<ul>
 <li class="" v-on:mouseover="changeActive($event)" v-on:mouseout="removeActive($event)"></li>
</ul>

methods:{  // 鼠标移入加入class
  changeActive($event){
    $event.currentTarget.className="active";
  },
  removeActive($event){
    $event.currentTarget.className="";
  }
}