ajax实现改变状态和删除无刷新的实例

?php
  include './include/Mysql.class.php';
  include './libs/Smarty.class.php';
  $db=new Mysql;
  $smarty=new Smarty;
  $lists=$db->getALL('users');
  $smarty->assign('lists',$lists);
  $smarty->display('list.html');
?>

!DOCTYPE html>
html>
head>
  meta charset=utf-8>
  title>用户权限展示表/title>
/head>
body>
    //给table体设置一个div，方便js调用
    div id="table">
    table align="center" border="1" width="500">
      center>h2>用户权限表/h2>/center>
      tr>
        th>uid/th>th>用户名/th>th>密码/th>th>锁定状态/th>th>角色/th>th>操作/th>
      /tr>  
      {foreach $lists as $list}
        tr align="center">
          td>{$list.uid}/td>
          td>{$list.username}/td>
          td>{$list.password}/td>
          {if $list.is_lock==1}
            td>a href="javascript:lock(0,{$list.uid});" rel="external nofollow" >锁定/a>/td>
            {else}
            td>a href="javascript:lock(1,{$list.uid})" rel="external nofollow" ;>取消锁定/a>/td>  
          {/if}    
          {if $list.role==1}
              td>管理员/td>
          {else}
              td>编辑者/td>    
          {/if}
          td>a href="javascript:del({$list.uid})" rel="external nofollow" >删除/a>/td>
        /tr>    
      {/foreach}  
    /table>
    /div>  
/body>
    script type="text/javascript">
      function lock(lock,uid){
          //创建ajax对象
          var xhr=new XMLHttpRequest();
          //打开一个链接
          xhr.open('post','02.php');
          //设置头信息
          xhr.setRequestHeader('content-type','application/x-www-form-urlencoded');
          //取值,多个参数用分开
          var data="is_lock="+lock+"uid="+uid;
          //发送ajax数据请求
          xhr.send(data);
          //设置回调、监听函数
          xhr.onreadystatechange=function(){
            //如果ajax状态码响应正常且网络正常，获取响应文本
            if(xhr.readyState==4xhr.status==200){
              if(xhr.responseText){
                document.getElementById('table').innerHTML=xhr.responseText;
              }else{
                alert("切换状态失败！");
              }
            }
          }
        }
    function del(uid){
      var del=window.confirm("您确定要删除吗？");
      if(del){
        //创建ajax对象
        var xhr=new XMLHttpRequest();
        //打开一个链接
        xhr.open('post','del.php');
        //设置header头
        xhr.setRequestHeader('content-type','application/x-www-form-urlencoded');
        //data取值
        var data="uid="+uid;
        //发送ajax请求
        xhr.send(data);
        //设置监听
        xhr.onreadystatechange=function(){
          //如果ajax状态码响应正常且网络正常，获取响应文本
          if(xhr.readyState==4xhr.status==200){
            if(xhr.responseText){
              //用ajax响应内容替换本模板中table标签的内容
              document.getElementById('table').innerHTML=xhr.responseText;
            }else{
              alert("删除失败！");
            }
          }
        }
      }
    }    
    /script>
/html>

?php
  include './include/Mysql.class.php';
  include './libs/Smarty.class.php';
  $lock=$_POST['is_lock'];
  $uid=$_POST['uid'];
  $smarty=new Smarty;
  $db=new Mysql;
  $result=$db->update('users',"is_lock=$lock","uid=$uid");
  if($result){
    //修改成功重新遍历数据库并输出smarty模板
    $lists=$db->getALL('users');
    $smarty->assign('lists',$lists);
    $smarty->display('list.html');
  }else{
    echo false;
  }
?>

?php
  include './include/Mysql.class.php';
  include './libs/Smarty.class.php';
  $db=new Mysql;
  $smarty=new Smarty;
  $uid=$_POST['uid'];
  $res=$db->delete('users',$uid);
  if($res>0){
    $lists=$db->getALL('users');
    $smarty->assign('lists',$lists);
    $smarty->display('list.html');
  }else{
    echo false;
  }
?>