el-table 设置单选

@selection-change="handleChange"

事件 :

  handleChange(selection) {

//返回的数组

      console.log(selection);

      selection.forEach((item) => {

        this.form.postId = item.postId

        this.form.postName = item.postName

      })

//关键

      if (selection.length > 1) {

        let del_row = selection.shift()

        this.$refs.multipleTable.toggleRowSelection(del_row, false)

      }