vue实现移入移出事件

Html

class="icon" @mouseenter="enter(index)" @mouseleave="leave()">

JS

methods:{
      enter(index){
        this.seen = true;
        this.current = index;
      },
      leave(){
        this.seen = false;
        this.current = null;
      }
    }

原文：vue实现鼠标移入移出事件