jQuery implements the method of obtaining the value of the first column of the table

jQuery implements the method of obtaining the value of the first column of the table_jquery

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Release： 2016-05-16 15:12:56

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The example in this article describes the jQuery method of obtaining the value of the first column of the table. Share it with everyone for your reference, the details are as follows:

Let’s take a look at the screenshots of the running effect:

The complete code is as follows:

<!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>
<title>无标题页</title>
<script src="jquery-1.4.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
  $("#Button1").click(function(){
    var cols="";
    $("#tb tr").each(function(){
      var text = $(this).children("td:first").text();
      cols+=text+"|";
    })
    cols=cols.length>0&#63;cols.substring(0,cols.length-1):"";
    alert(cols);
  })
})
</script>
</head>
<body>
  <input id="Button1" type="button" value="button" />
  <table id="tab1" border="1" style="width:100%;">
    <tr>
      <th>Id</th>
      <th>Name</th>
      <th>Address</th>
    </tr>
    <tbody id="tb">
    <tr>
      <td>11</td>
      <td>leaf</td>
      <td>gz</td>
    </tr>
    <tr>
      <td>22</td>
      <td>flower</td>
      <td>gz</td>
    </tr>
    </tbody>
  </table>
</body>
</html>

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