用ajax做登录与删除

主页面
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script src="../jquery-1.11.2.min.js"></script>
</head>
 
<body>
<h1>显示数据</h1>
 
<table width="100%" border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td>代号</td>
        <td>名称</td>
        <td>操作</td>
    </tr>
     
    <tbody id="tb">
     
    </tbody>
     
</table>
 
 
</body>
<script type="text/javascript">
 
//加载数据
Load();
 
 
 
//加载数据的方法
function Load()
{
$.ajax({
        url:"jiazai.php",
        dataType:"TEXT",
        success: function(data){
                var str = "";
                var hang = data.split("|");
                for(var i=0;i<hang.length;i++)
                {
                    var lie = hang[i].split("^");
                    str = str+"<tr><td>"+lie[0]+"</td><td>"+lie[1]+"</td><td><input type='button' code='"+lie[0]+"' value='删除' class='sc' /></td></tr>";
                }
                $("#tb").html(str);
                 
                //删除事件
                $(".sc").click(function(){
                    var code = $(this).attr("code");
                    $.ajax({
                        url:"shanchu.php",
                        data:{code:code},
                        dataType:"TEXT",
                        type:"POST",
                        success: function(d){
                            if(d.trim()=="OK")
                            {
                                alert("删除成功");
                                Load();
                            }
                            else
                            {
                                alert("删除失败");
                            }
                        }
                        });
                    })
            }
    });
     
}
     
</script>
</html>

主页中,ajax引用的加载页面

<?php
include("../LZY.class.php");
$db = new LZY();
 
$sql = "select * from nation";
$arr = $db->Query($sql);
 
 
$str = "";
foreach($arr as $v)
{
    $str = $str.implode("^",$v)."|";
}
$str = substr($str,0,strlen($str)-1);
echo $str;

效果如下图

接着我们删除处理页面

<?php
include("../LZY.class.php");
$db = new LZY();
$code = $_POST["code"];
$sql = "delete from nation where code='{$code}'";
if($db->Query($sql,0))
{
    echo "OK";
}
else
{
    echo "NO";
}

  

原文地址:https://www.cnblogs.com/yyy251/p/6591453.html