VUE DOM加载后执行自定义事件的方法

created:function(){
   var url="/indexitem";
   var _self=this;
   $.get(url,function(data){
   _self.items=data;
   });
   $.get('/banner',function(data){
   _self.banners=data；
   });
  }

<div id="slider" class="mui-slider" @click="greet()">
  <div class="mui-slider-group mui-slider-loop">
   <div class="mui-slider-item mui-slider-item-duplicate"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" :style="{backgroundImage: 'url(' + banners[banners.length-1].src+ ')',backgroundSize:'cover'}"></a></div>
   <div class="mui-slider-item" v-for="cc in banners"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" :style="{backgroundImage: 'url(' + cc.src+ ')',backgroundSize:'cover'}"></a></div>
   <div class="mui-slider-item mui-slider-item-duplicate"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" :style="{backgroundImage:'url('+banners[0].src+')',backgroundSize:'cover'}"></a></div>
  </div>
  <div class="mui-slider-indicator">
   <div class="mui-indicator mui-active"></div>
   <div class="mui-indicator"></div>
   <div class="mui-indicator"></div>
   <div class="mui-indicator"></div>
  </div>
  </div>

 setTimeout(function(){
  console.log($('#slider').length);
  var gallery = mui('.mui-slider');
  gallery.slider({
   interval: 3000//自动轮播周期，若为0则不自动播放，默认为0；
  });
  },1000);