问React js在单击按钮时获取表数据

EN

item.map(k => (
    <TableRow >
        <TableCell >{k.key}</TableCell>
        {
            k.val.map(r => (
                <TableRow >
                <TableCell>{r}</TableCell>
                </TableRow> 
    
            ))
        }
        <TableCell >
            <select  onChange={this.getListID} >
                <option value="noImport" >Dont import</option>
                {
                    item && item.map(k => <option key={k.key} value={k.key}>{k.key}</option>)
                }
            </select>
        </TableCell>
    </TableRow>     
  ))
}