<div>用户名：<input type="text" id="uid" /><span id="tt" style="display:none">用户名不存在</span></div>

<div>密&nbsp;码：<input type=‘password‘ id=‘pwd‘ /><span id="ts" style="display:none">密码不正确</span></div>
<div>新密码：<input type="password" id="pod" /><span id="ta" style="display:none">新密码不能为空</span></div>
<div>新密码：<input type="password" id="ppd" /><span id="tb" style="display:none">第二次新密码不能为空</span></div>
<div ><input type="button" value=http://www.mamicode.com/"修改" id="btn" />&nbsp;<a href=http://www.mamicode.com/"dengluzhu.php"><input type="submit" value=http://www.mamicode.com/"返回" /></a></div>








</div>
</div>



<script type="text/javascript">
$(document).ready(function(e){
$("#uid").blur(function(){
    var uid = $("#uid").val()
    $.ajax({
        url:"uidchuli.php",
        data:{uid:uid},
        dataType:"TEXT",
        type:"POST",
        success: function(data){
            //alert(data);
            if(data.trim()==0)
    {
        
        $("#tt").css("display","block");
        return false;
    }
    else if(data.trim()==1)
    {
        $("#tt").css("display","none");
        
    }
    }
    })
    })
    })
$("#pwd").blur(function(){
    var uid = $("#uid").val();
    var  pwd = $("#pwd").val();
    $.ajax({
        url:"uidpwdchuli.php",
        data:{pwd:pwd,uid:uid},
        type:"POST",
        dataType:"TEXT",
        success: function(data){
    
            if(data.trim()=="no")
    {
        $("#ts").css("display","block");
        return false;
    }
            if(data.trim()=="ok")
    {
        $("#ts").css("display","none");
        
        
    }
    }
    })
    })
$("#pod").blur(function(){
    var pod = $("#pod").val();
    if(pod.trim().length==0)
    {
        
    $("#ta").css("display","block");    
    return false;
    }
    else
    {
        
    $("#ta").css("display","none")    
    }
    })
    $("#ppd").blur(function(){
        var ppd = $("#ppd").val();
        if(ppd.trim().length==0)
    {
        
    $("#tb").css("display","block");    
    return false;
    }
    else
    {
        
    $("#tb").css("display","none")    
    }
    })


$("#btn").click(function(){
    var uid = $("#uid").val();
    var pod = $("#pod").val();
    var ppd = $("#ppd").val();
    
    if(pod.trim().length!=ppd.trim().length)
    {
    alert("输入的两次密码不相同");    
    return false;
    }
    
    else
    {
    $.ajax({
        url:"xugaichuli.php",
        data:{uid:uid,pod:pod,ppd:ppd},
        dataType:"TEXT",
        type:"POST",
        success: function(data){
        if(data.trim().length==1)
        {
            alert("修改成功");
            
        }
        }
        })
    }
    
    });
</script>



//ajax修改主页





<?php

$uid=$_POST["uid"];

include("js/DBDA.class.php");

$db=new DBDA();
$sql="select count(*) from admin where adminname=‘{$uid}‘";

echo $db->StrQuery($sql);



?>


//uid处理页面




<?php

$uid=$_POST["uid"];
$pwd=$_POST["pwd"];
include("js/DBDA.class.php");

$db=new DBDA();
$sql="select password from admin where adminname=‘{$uid}‘";

 $mm=$db->StrQuery($sql);
if($mm==$pwd && $pwd!="")
{
    
    echo "ok";    
    
}
else
{
echo "no";    
    
}


//判断密码处理页面





<?php

$uid=$_POST["uid"];
$pod=$_POST["pod"];
include("js/DBDA.class.php");
$db=new DBDA();


$sql="update admin set password=‘{$pod}‘ where adminname=‘{$uid}‘";

echo $db->StrQuery($sql,0);


?>



//执行修改处理页面