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javascript dom 实现页面增、删、更新功能

JavaScriptHTML 
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>addUser.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">


<script type="text/javascript" src="../js/wpCalendar.js">

</script>

</head>

<body>
<div align="center">
<h1>
显示有的用户界面
</h1>

<div style="border: 1px red solid;margin-bottom: 100px; padding: 10px 10%">

<table border="1px" cellpadding="0" cellspacing="0" id="tusers">
<thead>
<tr>
   <th>
      <input type="checkbox" name="chbk" id="chbk1"/>
   </th>
<th>
名称
</th>
<th>
性别
</th>
<th>
邮箱
</th>
<th>
出生日期
</th>
<th>
   操作
</th>
</tr>
           </thead>
           <tbody id="users">
          
           </tbody>
</table>

</div>

<div style="border: 1px blue solid;">
<form>
<table id="divs">
<tbody id="addUsers">
<tr>
<td>
用户名:
</td>
<td>
<input type="text" name="name" id="name" />
</td>
</tr>
<tr>
<td>
性别:
</td>
<td>
<select id="sex">
<option value="男">
男
</option>
<option value="女">
女
</option>
</select>
</td>
</tr>

<tr>
<td>
邮箱:
</td>
<td>
<input type="text" name="email" id="email" />
</td>
</tr>
<tr>
<td>
出生日期:
</td>
<td>
<input type="text" id="bir" name="bir" />
<input type=button value="点击看我"
onclick="showCalendar(this,document.all.bir)">
</td>
</tr>

<tr id="addu">
<td colspan="2">
<input type="button" value="添加" onclick="addUser()" id="add"/>
</td>
</tr>

<tr id="addu1">
<td colspan="2">
<input type="button" value="修改"  id="upduser"/>
</td>
</tr>
</tbody>
</table>
</form>
</div>
</div>
</body>
</html>


<script>
     window.onload = function (){
        document.getElementById("addu1").style.display="none";
     }
    
     function addUser(){
          var name = document.getElementById("name").value;
          var sex = document.getElementById("sex").value;
          var email = document.getElementById("email").value;
          var bir = document.getElementById("bir").value;
         
         
         
          //获取表格节点对象
           var tusers = document.getElementById("tusers");
       
         //创建行
         var tr1 = document.createElement("tr");
         var cbk = document.createElement("td");
         var tname = document.createElement("td");
         var tsex = document.createElement("td");
         var temail = document.createElement("td");
         var tbir = document.createElement("td");
         var toper = document.createElement("td");
        
 
         var cbk1 = document.createElement("input");
         cbk1.setAttribute("type","checkbox");
         cbk1.setAttribute("name","chbk");
        
         cbk.appendChild(cbk1);
         tname.appendChild(document.createTextNode(name));
         tsex.appendChild(document.createTextNode(sex));
         temail.appendChild(document.createTextNode(email));
         tbir.appendChild(document.createTextNode(bir));
         var adelete = document.createElement("a");
         var aupdate = document.createElement("a");
        
         adelete.setAttribute("href","#");
         aupdate.setAttribute("href","#");
        
         adelete.appendChild(document.createTextNode("删除 |"));
         aupdate.appendChild(document.createTextNode("修改"));
         toper.appendChild(adelete);
         toper.appendChild(aupdate)
      
        
        //往行中添加
        tr1.appendChild(cbk);
        tr1.appendChild(tname);
        tr1.appendChild(tsex);
        tr1.appendChild(temail);
        tr1.appendChild(tbir);
        tr1.appendChild(toper);
       
       var users =  document.getElementById("users");
       users.appendChild(tr1);
       tusers.appendChild(users);
      
      
          //删除操作
          adelete.onclick = function(){
             users.removeChild(adelete.parentNode.parentNode);
          }
         
      
          //修改操作
          aupdate.onclick = function(){
               document.getElementById("addu").style.display="none";
               document.getElementById("addu1").style.display="block";
              
           var utr = aupdate.parentNode.parentNode;
           var utrs= utr.childNodes;
          
           document.getElementById("name").value=utrs[1].innerHTML;
           document.getElementById("sex").value=utrs[2].innerHTML;
           document.getElementById("email").value=utrs[3].innerHTML;
           document.getElementById("bir").value=utrs[4].innerHTML;
          
           var upUser = document.getElementById("upduser");
          
           upUser.onclick = function(){
           utr.childNodes[1].innerHTML = document.getElementById("name").value;
           utr.childNodes[2].innerHTML = document.getElementById("sex").value;
           utr.childNodes[3].innerHTML = document.getElementById("email").value
           utr.childNodes[4].innerHTML = document.getElementById("bir").value
           document.getElementById("addu1").style.display="none";
           document.getElementById("addu").style.display="block";
           }
        
           }
   
     }
</script>
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