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用DOM实现用户的增删改

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <title>User.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">
  <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
  <script type="text/javascript" src="../js/wpCalendar.js"></script>
 </head>

 <body>
  <div align="center">
   <h2>
    所有的用户信息
   </h2>
   <!-- 显示区域 -->
   <div
    style="border: 1px red solid; margin-bottom: 30px; padding: 10px 10%; width: 600px">
    <table border="1px" cellpadding="0" cellspacing="0" id="tusers">
     <thead>
      <tr>
       <th>
        <input type="checkbox" name="chbk" id="chbk1" onclick="selectAll()"/>
       </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">
      <!-- 添加信息和分页控件 -->
     </tbody>
    </table>
    <div id="pages">
    </div>
   </div>
   <!-- 编辑区 -->
   <div style="border: 1px red solid; width: 400px">
    <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="oo"
          onclick="showCalendar(this,document.all.bir)">
        </td>
       </tr>
       <tr id="add1">
        <td colspan="2" align="center">
         <input type="button" value="添加" onclick="addUser()" id="add" />
        </td>
       </tr>
       <tr id="update1">
        <td colspan="2" align="center">
         <input type="button" value="修改" id="upduser" />
        </td>
       </tr>
      </tbody>
     </table>
    </form>
   </div>
  </div>
 </body>
</html>
<script type="text/javascript">
<!--
    window.onload=function(){
 document.getElementById("update1").style.display="none";
 }

 //添加操作
 function addUser(){
    //获取文本框中的内容
    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");
        
         //创建cbk列
         var cbk = document.createElement("td");
        
         //创建tname列
         var tname = document.createElement("td");
        
         //创建tsex列
         var tsex = document.createElement("td");
        
         //创建temail列
         var temail = document.createElement("td");
        
         //创建tbir列
         var tbir = document.createElement("td");
        
         //创建toper列
         var toper = document.createElement("td");
        
         //创建一个checkbox对象cbk1
         var cbk1 = document.createElement("input");
         cbk1.setAttribute("type","checkbox");
         cbk1.setAttribute("name","chbk");
        
         //把checkbox对象cbk1放到cbk列中
         cbk.appendChild(cbk1);
        
         //创建name对象并把它放到tname列中
         tname.appendChild(document.createTextNode(name));
        
         //创建sex对象并把它放到tsex列中
         tsex.appendChild(document.createTextNode(sex));
        
         //创建email对象并把它放到temail列中
         temail.appendChild(document.createTextNode(email));
        
         //创建bir对象并把它放到tbir中
         tbir.appendChild(document.createTextNode(bir));
        
         //创建a元素adelete和aupdate
         var adelete = document.createElement("a");
         var aupdate = document.createElement("a");
        
         //并分别给它们设置属性
         adelete.setAttribute("href","#");
         aupdate.setAttribute("href","#");
        
         //在设置它们的文本节点
         adelete.appendChild(document.createTextNode("删除 |"));
         aupdate.appendChild(document.createTextNode("修改"));
        
         //把a元素的对象adelete和aupdate放到toper列中
         toper.appendChild(adelete);
         toper.appendChild(aupdate);
        
         //把列添加行中
        tr1.appendChild(cbk);
        tr1.appendChild(tname);
        tr1.appendChild(tsex);
        tr1.appendChild(temail);
        tr1.appendChild(tbir);
        tr1.appendChild(toper);
       
        //获取将其要添加到的地方的元素节点
        var users = document.getElementById("users");       
        //将创建的行放入
        users.appendChild(tr1);    
        //再放入表格 对象  中
        tusers.appendChild(users);
        //删除操作
        adelete.onclick = function(){
            users.removeChild(adelete.parentNode.parentNode);
          }
        //修改操作
        aupdate.onclick = function(){
          //隐藏添加标签
               document.getElementById("add1").style.display="none";
               document.getElementById("update1").style.display="block";              
               //获取行对象
            var utr = aupdate.parentNode.parentNode;           
            //获取行的所有子节点
            var utrs= utr.childNodes;           
            //将获取的内容放到文本框中
            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;           
            //获取修改按钮的节点元素
            var upUser = document.getElementById("upduser");
            //点击修改按钮
            upUser.onclick = function(){           
            //将文本框的值添加到表格中
            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           
            //隐藏修改标签
            document.getElementById("update1").style.display="none";
            document.getElementById("add1").style.display="block";
            }      
           }
     
       //添加分页
       testPage();
 }
 
//定义分页标签节点对象并创建
var indexPage = document.createElement("a");
var upPage = document.createElement("a");
var downPage = document.createElement("a");
var endPage = document.createElement("a");
var nowpage = 1;

//分页技术的实现
function testPage() {
 var tbodyUsers = document.getElementById("users");
 var trUsers = tbodyUsers.getElementsByTagName("tr");
 //获取总记录数
 var countRecord = trUsers.length;
 //每页显示的记录数
 var PAGESIZE = 2;
 //总页数
 var countPage = (countRecord % PAGESIZE == 0 ? countRecord / PAGESIZE
   : Math.ceil(countRecord / PAGESIZE));
 //当前页信息
 // =======>从那条记录开始 (nowpage-1)*PAGESIZE;
 //var nowpage = countPage;

 //获取创建分页标签的节点对象
 var pages = document.getElementById("pages");
 //如果没有创建分页标签的节点则创建节点对象
 if (!pages.hasChildNodes()) {
  getPages(nowpage);
 }
 //当点击首页时的操作
 indexPage.onclick = function() {
  nowpage = 1;
  //显示首页的记录
  indexPageInfo(countRecord, trUsers);
 }
 //当点击上一页的操作
 upPage.onclick = function() {
  if (nowpage - 1 > 1) {
   nowpage -= 1;
  } else {
   nowpage = 1;
   indexPageInfo(countRecord, trUsers);
  }
  //显示上一页记录
  var startindex = (nowpage - 1) * PAGESIZE;
  var endindex = startindex + PAGESIZE;
  PageInfo(startindex, endindex, countRecord, trUsers)
 }
 //当点击下一页的操作
 downPage.onclick = function() {
  if (nowpage + 1 >= countPage) {
   nowpage = countPage;
  } else {
   nowpage += 1;
  }
  //显示上一页记录
  var startindex = (nowpage - 1) * PAGESIZE;
  var endindex = startindex + PAGESIZE;
  PageInfo(startindex, endindex, countRecord, trUsers)
 }
 //当点击最后一页的操作
 endPage.onclick = function() {
  nowpage = countPage;
  if (nowpage > 1) {
   var startindex = (nowpage-1)*PAGESIZE;
   for ( var i = 0; i < countRecord; i++) {
    if (i < startindex) {
     trUsers[i].style.display = "none";
    } else {
     trUsers[i].style.display = "block";
    }

   }
  } else {
   indexPageInfo(countRecord, trUsers);
  }

 }
}
//首页的显示记录
function indexPageInfo(countRecord, trUsers) {
 if (countRecord <= 2) {
  for ( var i = 0; i < PAGESIZE; i++) {
   trUsers[i].style.display = "block";
  }
 } else {
  for ( var i =2; i < countRecord; i++) {
   trUsers[i].style.display = "none";
  }
 }
}
//上一页 下一页的显示记录
function PageInfo(startindex, endindex, countRecord, trUsers) {
 for ( var i = 0; i < countRecord; i++) {
  if (i >= startindex && i < endindex) {
   trUsers[i].style.display = "block";
  } else {
   trUsers[i].style.display = "none";
  }
 }

}

//最后一页的显示记录

//创建分页的相应链接地址
function getPages(numpage) {

 indexPage.appendChild(document.createTextNode("首页"));
 indexPage.setAttribute("href", "#");

 upPage.appendChild(document.createTextNode("上一页"));
 upPage.setAttribute("href", "#");

 downPage.appendChild(document.createTextNode("下一页"));
 downPage.setAttribute("href", "#");

 endPage.appendChild(document.createTextNode("末页"));
 endPage.setAttribute("href", "#");

 //获取创建连接的位置的节点对象
 var pages = document.getElementById("pages");

 //添加到节点中
 pages.appendChild(indexPage);
 pages.appendChild(upPage);
 pages.appendChild(downPage);
 pages.appendChild(endPage);

}
function selectAll() {
 //获取所有用户信息的根节点
 var users = document.getElementById("users");
 //获取根节点中的input标签节点
 var ips = users.getElementsByTagName("input");

 //获取chbk的节点对象
 var chbk = document.getElementById("chbk1");

 for ( var i = 0; i < ips.length; i++) {
  //让遍历的结果于chbk中接到的checked属性值一致即可
  ips[i].setAttribute("checked", chbk.getAttribute("checked"));
 }

}

//-->
</script>

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