Javascript alert the rest of the row content using a checkbox

I have code currently where I can output the value inside the selected checkboxes:

<button name="save_multicheckbox" class="btn-primary" onClick="getCheckbox()">Save Checkbox</button>


function getCheckbox() {
    var checks = document.getElementsByClassName('checks');
    var id_value = '';

    for ( i=0; i<4; i++) {
        if (checks[i].checked === true){
            id_value += checks[i].value + " ";
            title_value += checks_title[i].value + " ";

        }
    }

    alert(id_value);
}


            <?php foreach($result as $res){
                    ?><tr>
                        <td><h6><?php echo $res->id_num; ?></h6></td>
                        <td><h6 class="checks-title"><?php echo $res->title; ?></h6></td>
                        <td id="h-center" class="checks-type">
                            <?php if ($res->eh_type == 'post') {
                                     echo '<h6 id="color-p">POST</h6>'; 
                                  } else if ($res->eh_type == 'tribe_events') { 
                                     echo '<h6 id="color-e">EVENT</h6>'; }
                            ?>
                        </td>
                        <td id="h-center"><h6 class="checks-date"><?php echo $res->eh_date; ?></h6></td>
                        <td><h6 class="checks-url"><a href="https://ioc-westpac.org/event/training-on-coral-larval-reseeding/"><?php echo $res->slug; ?></a></h6></td>
                        <td id="h-center"><input type="checkbox" class="checks" name="ckb" value ="<?php echo $res->id_num; ?>" onclick="chkcontrol(<?php echo $res->chkbox_num; ?>)"></td>
                    </tr>
                    <?php
                } ?>

as you can see below, the getCheckbox() function works when I get the value from the checkbox (output with alert)

what I want to do now is to also output the rest of the row info using still using the getCheckbox() function, what can I add?