AJAX的返回类型json与xml 

ajax返回类型有TEXT,JSON,XML
XML：页面之间传递数据，跨平台传递

HTML：超文本标记语言,核心标签

XML特点：
1.标签名可以自己定义
2.有且只有一个根
3.大小写敏感
4.标签必须完整

例题方法一：

<body>
<select id="sel">
</select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
    
    $.ajax({
        url:"ChuLi.php",
        dataType:"JSON",
        success: function(data){
            
            //alert(data);
            var str = "";
            for(var k in data)
            {
                str+="<option value='"+data[k][0]+"'>"+data[k][1]+"</option>";
            }
            
            $("#sel").html(str);
            
            }
        });
    
});
</script>
</html>

处理页面php

<?php

include("../DBDA.php");
$db = new DBDA();

$sql = "select * from Nation";
$attr = $db->Query($sql);

echo json_encode($attr);



?>

XML的应用

<!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>
<select id="sel"></select>
</body>
<script type="text/javascript">
$(document).ready(function(e) {
    
    $.ajax({
        url:"chulixml.php",
        dataType:"XML",
        success:function(data){
            
            var ch = $(data).find("nation").children();
            var str = "";
            for(var i=0;i<ch.length;i++)
            {
                var code = $(ch[i]).find("code").text();
                var name = $(ch[i]).find("name").text();
                
                str+="<option value='"+code+"'>"+name+"</option>";
            }
            $("#sel").html(str);
            
            }
        });
});
</script>
</html>

例题方法二：

<?php
include("../DBDA.php");
$db = new DBDA();

$sql = "select * from Nation";

$attr = $db->Query($sql);


echo "<nation>";

foreach($attr as $k=>$v)
{
    echo "<shuju{$k}>";
    
    echo "<code>{$v[0]}</code>";
    echo "<name>{$v[1]}</name>";
    
    echo "</shuju{$k}>";
}

echo "</nation>";

结果:

posted @ 2016-05-24 11:36  幸福的谎言  阅读(737)  评论(0)  编辑  收藏  举报