Vue-在一个固定的盒子里，内容列表滚动加载更多

<div class="index_mode4" v-if="hasData">
    				<div class="index_mode4_title">
    					<h2>最近访客</h2>
    					<span>记录当天最新访问次数</span>
    				</div>
    				<div class="scrolllistBox" @scroll="scrollEvent">
        				<ul class="list_ul"  :scrollTopForApp="scrollTopForApp">
        					<li :class="item.time.substring(0,10)==nowTime?‘timenow‘:‘‘" v-for="item in typeData1" :key="item.id" v-if="item.data.length>0">
        						<p class="time"><span>{{item.time}}</span></p>
        						<div class="ullist2">
            						<div class="userinfo" v-for="item2 in item.data">
            						   <span class="userhead"><img :src="item2.avatar"/></span>
            						   <span class="username">{{item2.nickname}}</span>
            						   <a :href="‘userinfo.html?openid=‘+item2.openid" class="goIntime">浏览过{{item2.num}}次</a>
            						</div>
        						</div>
        					</li>
        				</ul>
        				<p class="overData">到底咯~</p>
    				</div>
    			</div>