链接无法使用jquery

Probably a very simple answer, but I cannot seem to find a working solution. I am creating links from a php search script and it generates links based on query. I have written a sample jQuery script to open a div based on a tag being clicked, but when I click link, nothing happen. I cannot see any errors in firebug and would appreciate somke help. Thank you.

UPDATE: Added html and changed mailLink from id to class.

jQuery

$("a").click(function(e) {
        e.preventDefault();

        $('.mailShow').fadeIn(1500).html('This is the mailShow div');



    });

PHP

<?php

    while ($row = mysql_fetch_assoc($rsd))

{?>

    <div class="each_rec"><a href="#" class="mailLink"><?php echo $row['name_usr'];?>&nbsp;&nbsp;<?php echo $row['idcode_usr'];?></a></div>

<?php

}

    if($total==0){ echo '<div class="no-rec">No Record Found !</div>';}
?>

HTML

<div id="content">

    <div class="search-background">

        <label><img src="loader.gif" alt="" /></label>

    </div>

       <div id="sub_cont">

        <div class="mailShow"></div>

    </div>

</div>

Generated HTML from firebug

<div class="each_rec"><a href="#" class="mailLink">Demo User&nbsp;&nbsp;DEMO</a></div>

In jquery you have .mailShow and in PHP you use id="mailLink". You should change .mailShow to #mailLink.

JSFiddle for testing.

JSFIDDLE

Try this code:

$(document).ready(function () {
    $(document).on("click","a",function(e) {
            e.preventDefault();

            $('.mailShow').fadeIn(1500).html('This is the mailShow div');

        });
 });

<?php

    while ($row = mysql_fetch_assoc($rsd))

{?>

<div class="each_rec"><a href="#" class="mailLink"><?php echo $row['name_usr'];?>&nbsp;&nbsp;<?php echo $row['idcode_usr'];?></a></div>

<?php

}

    if($total==0){ echo '<div class="no-rec">No Record Found !</div>';}
?>

I see two probable issues: 1. You didn't use $(document).ready(); and put your code outside of it. Then you need to put the above code to docyument ready. 2. You inseert links dinamycaly - from ajax query. Thus you need to use jquery delegates instead.