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

WBOY
WBOYOriginal
2016-05-16 15:12:561788browse

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>

Readers who are interested in more jQuery-related content can check out the special topics on this site: "JQuery drag effects and skills summary", "jQuery extension skills summary", "JQuery common classic special effects summary", "jQuery animation and special effects usage summary", "jquery selector usage summary" and "jQuery common plug-ins and usage Summary》

I hope this article will be helpful to everyone in jQuery programming.

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