vue.js如何控制列表每一项

<p v-for="(i,index) in resultful_list" class="my_similar_collect_p" >
 <p v-bind:class="{add_class:i.isActive}" 
 style="height: 200px; font-size: 14px; width: 100%; color: rgb(122,122,122);" class="old_class">
 <p style="margin-top: 8px;">
 <span style="color: rgb(,158,255);">：</span>
 <span v-if="x.name.length<70" v-for="x in i.disease.disease"
 style=" display:inline-block;font-size: 14px; margin-right:5px;color:#7A7A7A;">
 <span v-if="x.name">{{x.name}}</span>
 </span>
 <span v-if="i.disease.disease"></span>
 <span v-else>无</span>
 <span v-if="x.name && x.name.length>=70" v-for="x in i.disease.disease"
 style=" display:inline-block;font-size: 14px; margin-right:5px;color:#7A7A7A;">
 {{x.name.substring(0,70) + '...'}}</span>
 </p>
 </p>
</p>

 v-bind:class="{add_class:i.isActive}"

var obj = {
 isActive:false,
 }
resultful_list.push(obj);