用jquery 获取一个表格里面第3行第4列的值!

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<html>

<head>

 <script type="text/javascript" src="http://www.w3school.com.cn/jquery/jquery.js"></script>

<script type="text/javascript">

    $(document).ready(function(){ var tt = $("tr:eq(2)>td:eq(3)").css("background-color","red").text(); alert(tt);});

</script>

 </head>

<body>

<hr />

 <table width="500" border="0">

        <tr>

              <td>1</td>

              <td>2</td>

              <td>3</td>

              <td>4</td>

       </tr>

        <tr>

              <td>11</td>

              <td>22</td>

              <td>33</td>

              <td>44</td>

        </tr>

         <tr> <td>111</td> <td>222</td> <td>333</td> <td>444</td> </tr>

         <tr> <td>5555</td> <td>6666</td> <td>7777</td> <td>8888</td> </tr>

 </table>

</body>

</html>