<el-collapse v-for="(val, index) in item.list" v-model="activeListNames" class="listCollapse">
<el-collapse-item title="-点击展开子列表-" :name="index"></el-collapse-item>
</el-collapse>
<el-collapse v-for="(val, index) in item.list" :key='index' v-model="activeListNames" class="listCollapse">
<el-collapse-item title="-点击展开子列表-" :name="index"></el-collapse-item>
</el-collapse>
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