问题总结:
当下拉列表改变时,jQuery 触发 AJAX 来获取选定项目的 PM。项目中已有的 PM 数量在 PHP var$num_pms
中。(在下面的 AJAX 中,这是作为第二个隐藏输入字段 #num_pms 的值插入的。)
在 AJAX 成功回调 fn 中,input#num_pms.val()
读取并用于初始化一个计数器——但数字总是错误的。
为了排除故障,我试图从 读取该值input#num_pms
,将其递增并将其重新写入input#test
. 但是,提交表单后,test 的值为空。但是,奇怪的是,值input#num_pms
是正确的!
我必须做错事来读取input#num_pms
字段值......?
HTML:下拉菜单触发 jQuery 运行 AJAX 搜索。结果放入#reportstable div。
Project*:<br />
<?php include 'inc/widgets/dropdown_all_projects.php';?>
<form action="" method="post" name="updatepm" enctype="multipart/form-data" id="TheForm">
<div id="reportstable">
</div>
</form>
阿贾克斯:
$project_num = $_POST['project_num'];
$project_id = get_project_id_from_project_num($project_num);
$aPMs = get_climgr_for_project($project_id,'user_id','first_name','last_name');
$num_pms = mysql_num_rows($aPMs);
//>Snippet< -- Inject following markup into #reportstable div.
echo
'<th width="50">
Action
<input type="hidden" name="project_id" value="'.$project_id.'">
<input type="hidden" name="num_pms" id="num_pms" value="'.$num_pms.'">
<input type="hidden" name="test" id="test" value="">
</th>
';
jQuery:触发 AJAX,将结果返回到#reportstable
$('#project_pick').change(function(e) {
$('#project_pick').css('width', '500');
$.ajax({
type: "POST",
url: "ajax/ax_all_ajax_fns.php",
data: "project_num=" + $(this).val(),
success:function(data){
$('#reportstable').html(data);
//Tried adding this first
var count = $('#num_pms').val() + 1;
$('#test').val(count);
//Tried this after above wouldn't work. It didn't either.
//var count = 80;
} //END success fn
}); //END $.ajax()
}); //END dropdown .change() event