<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<meta charset="UTF-8">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
<title>jQuery</title>
<script language="javascript" type="text/javascript">
$(function(){
//$('table tr:not(:first)').remove();
var len = $('table tr').length;
for(var i = 1;i<len;i++){
$('table tr:eq('+i+') td:first').text(i);
}
});
</script>
</head>
<body>
<table width=500 border=2>
<tr><td width=250>序号</td><td width=250>项目</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
<tr><td></td><td>Port</td></tr>
</table>
</body>
</html>正文完