【el-table如何禁用】

<el-table ref="table"
                  highlight-current-row="true"
                  header-row-class-name="el-table_color"
                  tooltip-effect="dark"
                  fit
                  border
                  stripe
                  :height="crud.tableHeight-180"
                  @row-click="crud.handleRowClick"
                  v-watermark="{text:syname,textColor:'rgba(180, 180, 180, 0.3)'}"  v-loading="crud.loading" :data="newArr"
                  size="small" style="width: 100%;" @selection-change="crud.selectionChangeHandlerAll">
          <el-table-column type="selection" :selectable="checkSelectable" width="40"  align="center" fixed="left"/>
          <el-table-column :show-overflow-tooltip="true" v-i