jQuery DataTables鼠标悬停问题

我有这个页面.当我更改条目数时,新显示的条目的鼠标悬停失败.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript" src="http://www.datatables.net/release-datatables/media/js/jquery.js"></script>
<script type="text/javascript" src="http://www.datatables.net/release-datatables/media/js/jquery.dataTables.js"></script>

<link href="http://www.datatables.net/release-datatables/media/css/demo_table.css" rel="stylesheet" type="text/css"/>

<style type="text/css">
    .edit {display: none}
</style>

<script type="text/javascript" charset="utf-8">
    $(document).ready(function() {
        $('#example').dataTable();
    } );
</script>

<script>
    jQuery(document).ready(function() {
        jQuery('#example tr').mouSEOver(function() {
            jQuery(this).find('span:first').show();
        }).mouSEOut(function() {
            jQuery(this).find('span:first').hide();
        });
    }); 
</script>
</head>

<body>
<table id="example" class="display">
    <thead>
        <tr>
            <th>A</th>
            <th>B</th>
            <th>C</th>
            <th width="24em;">&nbsp;</th>
        </tr>
    </thead>
    <tbody>
        <tr class="gradeA" >
            <td>a1</td>
            <td>b1</td>
            <td>c1</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a2</td>
            <td>b2</td>
            <td>c2</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a3</td>
            <td>b3</td>
            <td>c3</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a4</td>
            <td>b4</td>
            <td>c4</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a5</td>
            <td>b5</td>
            <td>c5</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a6</td>
            <td>b6</td>
            <td>c6</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a7</td>
            <td>b7</td>
            <td>c7</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a8</td>
            <td>b8</td>
            <td>c8</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a9</td>
            <td>b9</td>
            <td>c9</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a10</td>
            <td>b10</td>
            <td>c10</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a11</td>
            <td>b11</td>
            <td>c11</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a12</td>
            <td>b12</td>
            <td>c12</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a13</td>
            <td>b13</td>
            <td>c13</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
        <tr class="gradeA" >
            <td>a14</td>
            <td>b14</td>
            <td>c14</td>
            <td> <span class="edit"> <a href="#">EDIT</a> </span> </td>
        </tr>
    </tbody>
</table>
</body>

解决方法

你需要事件授权.您不必将单独的侦听器附加到当前表中的每个行,而只将一个附加到容器(#table)并传入选择器(tr)以匹配事件目标(因为事件从表内部冒泡,除非停止使用stopPropagation()).

使用jQuery 1.7,你可以在jQuery< 1.7中使用$(容器).on(event,selectorString,func)函数,该函数等于$(container).delegate(event,func). 没有中间参数的调用on(如$(my_rows).on(event,func),将是$(my_rows).bind(‘mouSEOver’,func)的1.7当量,它只适用于当前在DOM中的元素.

jQuery(document).ready(function() {
    jQuery('#example').
      on('mouSEOver','tr',function() {
          jQuery(this).find('span:first').show();
      }).
      on('mouSEOut',function() {
          jQuery(this).find('span:first').hide();
      });
});

jQuery DataTables鼠标悬停问题

解决方法

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