if so, what attributes do you need to add?
Note: without knowing how many pieces of data there are
post a code:
<el-collapse v-model="activeNames">
<el-collapse-item v-for="(item,index) in typesContractData" :key="item.id" :title="item.name" :name="index">
</el-collapse-item>
</el-collapse>activeNames:[]
...
for(var i = 0; i < this.typesContractData.length; iPP) {
this.activeNames.push(i.toString())
} set the name of el-collapse-item to the same as the value of el-collapse
< el-collapse v handleChange model = "activeNames" @ change= "handleChange" >
activeNames: ['1','2','3','4']
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