sub_str += '<td><label for="article_show1_" class="cb-enable" '
+ (spec[spec_bunch][goods_commend] == 0 ? 'selected' : '')
+ ' >Да</label>';
или
sub_str += `<td><label for="article_show1_" class="cb-enable" ${spec[spec_bunch][goods_commend] == 0 ? 'selected' : ''} >Да</label>`;