我有一个从数据库动态生成的员工列表，每个员工都有一个id，现在我想在每次点击时打开一个关于id的div框，并在该框中显示他们的id。 我无法根据所选的ID访问该div。
include 'connect.php';
$ert=mysql_query("Select * from login_session where bit='0' and date='$date'") or die(mysql_error());
while($we=mysql_fetch_array($ert)){
$employee_id=$we['employee_id'];
?>
<li> <a href="#" data-employee="<?php echo $we['employee_id']; ?>" class="addClass"><?php echo $we['name'];?></a></li>
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
<div class="popup-head">
<div class="popup-head-left pull-left"><img src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" alt="iamgurdeeposahan"> Gurdeep Osahan
</div>
<div class="popup-head-right pull-right">
<div class="btn-group">
<button class="chat-header-button" data-toggle="dropdown" type="button" aria-expanded="false">
<i class="glyphicon glyphicon-cog"></i> </button>
<ul role="menu" class="dropdown-menu pull-right">
<li><a href="#">Media</a></li>
<li><a href="#">Block</a></li>
<li><a href="#">Clear Chat</a></li>
<li><a href="#">Email Chat</a></li>
</ul>
</div>
<button data-widget="remove" class="removeClass chat-header-button pull-right" type="button"><i class="glyphicon glyphicon-off"></i></button>
</div>
</div>
<div class="popup-messages">
<div class="direct-chat-messages">
<div class="chat-box-single-line">
<abbr class="timestamp">October 8th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="message user image" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-img-reply-small pull-left">
</span>
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
<!-- /.direct-chat-msg -->
<div class="chat-box-single-line">
<abbr class="timestamp">October 9th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img big-round">
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
</div>
</div>
<div class="popup-messages-footer">
<textarea id="status_message" placeholder="Type a message..." rows="10" cols="40" name="message"></textarea>
<div class="btn-footer">
<button class="bg_none"><i class="glyphicon glyphicon-film"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-camera"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-paperclip"></i> </button>
<button class="bg_none pull-right"><i class="glyphicon glyphicon-thumbs-up"></i> </button>
</div>
</div>
</div>
<script>
$(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
$(".removeClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).removeClass('popup-box-on');
});
})
</script>
答案 0 :(得分：0)
首先，在带有.addClass类的锚标记<a>内，您正在使用$we['employee_id']，然后对于它使用$employee_id的相应框，该框为空，结果为未定义变量误差。
您应该为触发器和目标选择器提供unqiue标识符，例如.addClass，您可以使用data属性将数据附加到目标。看下面：
<a href="#" data-employee="<?php echo $we['employee_id']; ?>" class="addClass"><?php echo $we['name'];?></a>
然后对于相应的框ID，您可以为其分配一个唯一的ID：
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
并且在javascript / jquery内部结束时，您可以使用data属性值触发它们，并放置我们为目标div创建的唯一标识符。假设.addClass的{{1}}属性包含data，这是一个员工ID，而34将包含.popup-box，因为我们需要通过一些独特的东西来识别它们而不仅仅是数字。
id="employee_34"最后你的php和html代码应如下所示：
$(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
});
和您的javascript代码如下：
include 'connect.php';
$ert=mysql_query("Select * from login_session where bit='0' and date='$date'") or die(mysql_error());
while($we=mysql_fetch_array($ert)){
?>
<li> <a href="#" data-employee="<?php echo $we['employee_id']; ?>" class="addClass"><?php echo $we['name'];?></a></li>
<div class="popup-box chat-popup" id="employee_<?php echo $employee_id; ?>">
<div class="popup-head">
<div class="popup-head-left pull-left"><img src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" alt="iamgurdeeposahan"> Gurdeep Osahan
</div>
<div class="popup-head-right pull-right">
<div class="btn-group">
<button class="chat-header-button" data-toggle="dropdown" type="button" aria-expanded="false">
<i class="glyphicon glyphicon-cog"></i> </button>
<ul role="menu" class="dropdown-menu pull-right">
<li><a href="#">Media</a></li>
<li><a href="#">Block</a></li>
<li><a href="#">Clear Chat</a></li>
<li><a href="#">Email Chat</a></li>
</ul>
</div>
<button data-widget="remove" id="removeClass" class="chat-header-button pull-right" type="button"><i class="glyphicon glyphicon-off"></i></button>
</div>
</div>
<div class="popup-messages">
<div class="direct-chat-messages">
<div class="chat-box-single-line">
<abbr class="timestamp">October 8th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="message user image" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-img-reply-small pull-left">
</span>
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
<!-- /.direct-chat-msg -->
<div class="chat-box-single-line">
<abbr class="timestamp">October 9th, 2015</abbr>
</div>
<!-- Message. Default to the left -->
<div class="direct-chat-msg doted-border">
<div class="direct-chat-info clearfix">
<span class="direct-chat-name pull-left">Osahan</span>
</div>
<!-- /.direct-chat-info -->
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img"><!-- /.direct-chat-img -->
<div class="direct-chat-text">
Hey bro, how’s everything going ?
</div>
<div class="direct-chat-info clearfix">
<span class="direct-chat-timestamp pull-right">3.36 PM</span>
</div>
<div class="direct-chat-info clearfix">
<img alt="iamgurdeeposahan" src="http://bootsnipp.com/img/avatars/bcf1c0d13e5500875fdd5a7e8ad9752ee16e7462.jpg" class="direct-chat-img big-round">
<span class="direct-chat-reply-name">Singh</span>
</div>
<!-- /.direct-chat-text -->
</div>
</div>
</div>
<div class="popup-messages-footer">
<textarea id="status_message" placeholder="Type a message..." rows="10" cols="40" name="message"></textarea>
<div class="btn-footer">
<button class="bg_none"><i class="glyphicon glyphicon-film"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-camera"></i> </button>
<button class="bg_none"><i class="glyphicon glyphicon-paperclip"></i> </button>
<button class="bg_none pull-right"><i class="glyphicon glyphicon-thumbs-up"></i> </button>
</div>
</div>
</div>
<?php } ?>
以这种方式同样删除员工div的相应框。
注意
由于弹出框div是多个并且已经在dom中，你不应该使用 $(function(){
$(".addClass").click(function () {
var var1=$(this).data('employee');
$('#employee_'+var1).addClass('popup-box-on');
});
});
选择器来移除触发器，因为它只会定位第一个div而不是其他，使用类来删除div还有id
删除更新
要删除div，请不要使用id删除div，将删除按钮更改为以下内容：
removeBox并使用以下jquery代码删除div
<button data-widget="remove" data-employee="<?php echo $we['employee_id']; ?>" class="chat-header-button removeClass pull-right" type="button"><i class="glyphicon glyphicon-off "></i></button>