花了一个下午学习如何做到这一点,它工作得很好。在这里为其他人发布了新代码....
感谢http://forum.codecall.net/topic/59341-php-sql-jquery-and-ajax-populate-select-boxes/的教程。
并感谢这里的每一个人。
PHP 为第一个构建:
function agency_select() {
include('../include/dbase.php');
$agencies = $pdo->query("SELECT * FROM agency WHERE Status='active' ORDER BY AgencyName");
$opt = '';
while ($age_array = $agencies->fetch(PDO::FETCH_ASSOC)) {
$opt .= '<option value="'.$age_array['AgencyId'].'">'.$age_array['AgencyId'].' - '.$age_array['AgencyName'].' - '.$age_array['AgencySuburb'].'</option>'."\n\t\t\t\t\t\t\t";
}
return $opt;
}
两个元素的 HTML:
<label for="AgencyId">Client/Agency:</label>
<select class="uniform" id="AgencyId" name="AgencyId" style="width: 400px; overflow-x: hidden">
<?php echo agency_select(); ?>
</select>
<label for="Contact">Contact: </label>
<select class="uniform" id="Contact" name="Contact" style="width: 300px; overflow-x: hidden">
<option value="">----Select Client/Agency----</option>
</select>
AJAX 文件:
if(isset($_POST['AgencyId'])) {
include('../include/dbase.php');
$option = '<option value="">----Select Contact----</option>';
$query = $pdo->prepare("SELECT * FROM client WHERE AgencyId= ? AND Status='active' ORDER BY FirstName");
$result = $query->execute(array($_POST['AgencyId'])));
while ($row = $result->fetch(PDO::FETCH_ASSOC)) {
$option .= '<option value="'.$row['id'].'">'.$row['FirstName'].' '.$row['LastName'].'</option>';
}
echo $option;
}
jQuery:
$(document).ready(function () {
update_contacts();
});
function update_contacts() {
$('#AgencyId').change(function() {
$('#Contact').fadeOut();
$('#loader').show();
$.post('../ajax/ajax_contact_select.php', {
AgencyId: $('#AgencyId').val()
}, function (response) {
setTimeout("finishajax('Contact', '"+escape(response)+"')", 400);
});
return false;
});
}
function finishajax(id,response) {
$('#loader').hide();
$('#'+id).html(unescape(response));
$('#'+id).fadeIn();
}