下面用js实现可以生成用户所需行数的表格。

1.首先在body中填入下列代码，获取用户填入的行数值

 1 <table>
 2     <tr>
 3     <td>动态生成表格</td>
 4     <td><input id="Cold" type="text" class="input" size="10" name="Num"/>行</td>
 5     </tr>
 6 </table>
 7 </br>  
 8 <input name="" type="button" value="生成" class="buttton" onclick="table()"/></br>  
 9 </br>  
10 <div id="div1" style="display: none" mce_style="display: none">    
11     <div id="table1"></div>        
12 </div>    
13 <div id="errmsg1" class="formmsg"></div>

效果如下图所示：

2.header中添加js代码

 1 <script>
 2         function table() {
 3             if (document.getElementById("Num").value == "" || document.getElementById("Num").value.search("^[0-9]*$") == -1) {
 4                 document.getElementById("errmsg1").style.display = "block";//判断Num是否为空或不是数字    提示错误
 5                 document.getElementById("errmsg1").innerHTML = "提示信息：行数为空或不是数字！";
 6             }
 7             else {
 8                 document.getElementById("errmsg1").style.display = "none";//隐藏提示信息
 9                 var Num = parseInt(document.getElementById("Num").value); //获取行数           
10                 var flag = true;
11                 var data = "";
12                 data += " <table >";
13                 data += " <tr>" +
14                             "<td >we are</td>" +
15                             "<td >zhuzhu</td>" +
16                             "<td >dudu</td>" +                            
17                         "</tr>" ;
18                 for (var i = 1; i <= Num; i++) {                   
19                     data += "<tr >";
20                     data += "<td>" + i + "</td>";
21                     data += "<td><input name='ColdDay"+i+"' type='text' class='input'></td>";
22                     data += "<td><input name='ColdCureMethod"+i+"' type='text' class='input'></td>";                                  
23                     data += "</tr>";
24                 }
25                 
26                 data += "</table>";
27                 document.getElementById("div1").style.display = "block";
28                 document.getElementById("table1").innerHTML = data;
29             }
30         } 
31 </script>

生成效果如下：

3.所有代码如下

  1 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
  2 <%
  3 String path = request.getContextPath();
  4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  5 %>
  6 
  7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  8 <html>
  9   <head>
 10     <base href="<%=basePath%>">
 11     
 12     <title>test</title>
 13     
 14     <meta http-equiv="pragma" content="no-cache">
 15     <meta http-equiv="cache-control" content="no-cache">
 16     <meta http-equiv="expires" content="0">    
 17     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
 18     <meta http-equiv="description" content="This is my page">
 19 
 20     <style type="text/css">    
 21         .right{
 22             margin:0% 10%;
 23             width:600px;
 24         }
 25         .right table{
 26             background:white;
 27             width:100%;
 28             border:1px solid #499B33;
 29         }
 30         .right td{
 31             background:blue;
 32             text-align:center;
 33             padding:2px;
 34             border:1px solid #499B33;
 35         }
 36         .right td{
 37             background:#8FBC8F;
 38         }        
 39         .item{
 40             text-align:center;            
 41             width:100px;
 42         }
 43         .assigned{
 44             border:1px solid #BC2A4D;
 45         }        
 46     </style>
 47 <script>
 48         function table() {
 49             if (document.getElementById("Num").value == "" || document.getElementById("Num").value.search("^[0-9]*$") == -1) {
 50                 document.getElementById("errmsg1").style.display = "block";//判断payNum是否为空或不是数字    提示错误
 51                 document.getElementById("errmsg1").innerHTML = "提示信息：行数为空或不是数字！";
 52             }
 53             else {
 54                 document.getElementById("errmsg1").style.display = "none";//隐藏提示信息
 55                 var Num = parseInt(document.getElementById("Num").value); //获取分期数           
 56                 var flag = true;
 57                 var data = "";
 58                 data += " <table >";
 59                 data += " <tr>" +
 60                             "<td >we are</td>" +
 61                             "<td >zhuzhu</td>" +
 62                             "<td >dudu</td>" +                            
 63                         "</tr>" ;
 64                 for (var i = 1; i <= Num; i++) {                   
 65                     data += "<tr >";
 66                     data += "<td>" + i + "</td>";
 67                     data += "<td><input name='ColdDay"+i+"' type='text' class='input'></td>";
 68                     data += "<td><input name='ColdCureMethod"+i+"' type='text' class='input'></td>";                                  
 69                     data += "</tr>";
 70                 }
 71                 
 72                 data += "</table>";
 73                 document.getElementById("div1").style.display = "block";
 74                 document.getElementById("table1").innerHTML = data;
 75             }
 76         } 
 77 </script>   
 78 
 79   </head>
 80   
 81   <body>
 82     <br>
 83 <div style="width:750px;">
 84 <div class="right">
 85 <table>
 86     <tr>
 87     <td>动态生成表格</td>
 88     <td><input id="Num" type="text" class="input" size="10" name="Num"/>行</td>
 89     </tr>
 90 </table>
 91 </br>  
 92 <input name="" type="button" value="生成" class="buttton" onclick="table()"/></br>  
 93 </br>  
 94 <div id="div1" style="display: none" mce_style="display: none">    
 95     <div id="table1"></div>        
 96 </div>    
 97 <div id="errmsg1" class="formmsg"></div>
 98 </div>
 99 </div>
100   </body>
101 </html>
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