Element-ui 表格table实现单选

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<el-table :data="chooseMcaterialData" highlight-current-row border @selection-change="handleSelectionChange" @current-change="chooseMcaterialChange" ref="Table" >

1       handleSelectionChange(val) {
2         if (val.length > 1) {
3         this.$refs.Table.clearSelection()
4         this.$refs.Table.toggleRowSelection(val.pop())
5       } 
6         this.multipleSelection = val;
7       },

1       chooseMcaterialChange(val){
2         this.$refs.Table.toggleRowSelection(val)
3       },