几个要点：

1.通过 selectable 绑定

2.绑定的方法只能返回0/1

               <el-table-column

                    type="selection"

                    width="55"

                    :selectable="checkbox_select">

                </el-table-column>
           checkbox_select(row, index){

                if (this.$MyComm.isEmpty(row.bug_id)){

                    return 0

                }else {

                    return 1

                }

参考文档：https://blog.csdn.net/rickiyeat/article/details/76595263

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