elementui table html,ElementUI table标签如何让某一行默认展开

:data="tableData5":row-key="getRowKeys":expand-row-keys="expands"style="100%">

{{ props.row.name }}

{{ props.row.shop }}

{{ props.row.id }}

{{ props.row.shopId }}

{{ props.row.category }}

{{ props.row.address }}

{{ props.row.desc }}

label="商品 ID"prop="id">

label="商品名称"prop="name">

label="描述"prop="desc">

exportdefault{

data() {return{

tableData5: [{

id:'12987122',

name:'好滋好味鸡蛋仔',

category:'江浙小吃、小吃零食',

desc:'荷兰优质淡奶，奶香浓而不腻',

address:'上海市普陀区真北路',

shop:'王小虎夫妻店',

shopId:'10333'}, {

id:'12987123',

name:'好滋好味鸡蛋仔',

category:'江浙小吃、小吃零食',

desc:'荷兰优质淡奶，奶香浓而不腻',

address:'上海市普陀区真北路',

shop:'王小虎夫妻店',

shopId:'10333'}, {

id:'12987125',

name:'好滋好味鸡蛋仔',

category:'江浙小吃、小吃零食',

desc:'荷兰优质淡奶，奶香浓而不腻',

address:'上海市普陀区真北路',

shop:'王小虎夫妻店',

shopId:'10333'}, {

id:'12987126',

name:'好滋好味鸡蛋仔',

category:'江浙小吃、小吃零食',

desc:'荷兰优质淡奶，奶香浓而不腻',

address:'上海市普陀区真北路',

shop:'王小虎夫妻店',

shopId:'10333'}],//获取row的key值

getRowKeys(row) {returnrow.id;

},//要展开的行，数值的元素是row的key值

expands: []

}

},

mounted() {//在这里你想初始化的时候展开哪一行都可以了

this.expands.push(this.tableData5[1].id);

}

}

font-size: 0;

}

.demo-table-expand label {

90px;

color: #99a9bf;

}

.demo-table-expand .el-form-item {

margin-right: 0;

margin-bottom: 0;50%;

}