落伍首发 php+mysql 采用ajax技术的省市地 3级联动无刷新菜单源码

2015-01-24信息快讯网

绝对原创
测试地址： http://www.mlmm.cn/mypage/?name=ceshi

测试页代码：

<html>  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />  
<title>php+ajax动态生成下拉菜单</title>  
<script language="JavaScript" src="../include/js/regions.js"></script> 
</head>  
<body>  
<form name="form1" method="post" action="">  
<tr><td>{$regionss(中华人民共和国)}</td></tr> 
</form> 
</body>  
</html>

regionss 函数代码：
QUOTE:

//省市地3级联动下拉菜单函数 regionss 省.市.地    
function regionss($country="中华人民共和国")   
{        
        global $db; $i = 1;  
        $text="<select id=\"select1\" name=\"select1\" onchange=\"startRequest()\" style=\"width:90px;\"><option value=\"\">省/市/自治区</option>\n";  

        $result = $db->query("SELECT province FROM ".TABLE_PROVINCE." WHERE country='$country' ORDER BY provinceid");  
        while($r = $db->fetch_array($result))  
         {  
  $text .= "<option value=".$r['province'].">".$r['province']."</option> ";  
  $i++;  
         }  
        $text.="</select>";   
        $text.=" <select id=\"select2\" name=\"select2\" onchange=\"startRequesta()\" style=\"width:90px;\"><option value=\"\">市/县/区</option></select>\n";  
        $text.="<select id=\"select3\" name=\"select3\" style=\"width:90px;\"><option value=\"\">县级市/县</option></select>\n";     
        return $text;  

}

regions.js 的代码：

//var ab = new Array();   
var xmlHttp;   
var xmlHttpa;  
function createXMLHttpRequest() {   
    if (window.ActiveXObject) {   
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");   
    }    
    else if (window.XMLHttpRequest) {   
        xmlHttp = new XMLHttpRequest();   
    }   
}   
function createXMLHttpRequesta() {   
    if (window.ActiveXObject) {   
        xmlHttpa = new ActiveXObject("Microsoft.XMLHTTP");   
    }    
    else if (window.XMLHttpRequest) {   
        xmlHttpa = new XMLHttpRequest();   
    }   
}    

function startRequest() {   
    createXMLHttpRequest();   
    createXMLHttpRequesta();   
    xmlHttp.onreadystatechange = handleStateChange;   
    xmlHttpa.onreadystatechange = handleStateChangearea;   
    document.getElementById('select2').options.length = 0;   
    document.getElementById('select3').options.length = 0;  
    var url = document.form1.select1.value;   
    var qurl = "/regions.php?province="+url+"&time="+new Date().getTime();   
    xmlHttp.open("GET", qurl, true);   
    xmlHttp.send(null);   
    //setTimeout("startRequest()",2000);   
}   

function handleStateChange() {   
    if(xmlHttp.readyState == 4) {   
        if(xmlHttp.status == 200) {   
         var obj = document.getElementById('select2'); //将服务器返回的字符串写到页面中ID为select2的区域      
            obja = document.getElementById('select3'); //将服务器返回的字符串写到页面中ID为select3的区域     
            eval(xmlHttp.responseText);     

        }   
    }   
}   
function handleStateChangearea() {           
            eval(xmlHttpa.responseText);            
}   
//var ab = new Array();   

function startRequesta() {   
    createXMLHttpRequesta();   
    xmlHttpa.onreadystatechange = handleStateChangea;   
    document.getElementById('select3').options.length = 0;   
    var url = document.form1.select2.value;   
    var qurl = "/regions.php?city="+url+"&time="+new Date().getTime();   
    xmlHttpa.open("GET", qurl, true);   
    xmlHttpa.send(null);   
    //setTimeout("startRequest()",2000);   
}   

function handleStateChangea() {   
    if(xmlHttpa.readyState == 4) {   
        if(xmlHttpa.status == 200) {   
         var obja = document.getElementById('select3');   
            eval(xmlHttpa.responseText);    
        //将服务器返回的字符串写到页面中ID为select3的区域  

        }   
    }   
}

数据岛 regions.php 页面代码

<?php   
require "common.php";   
$city = $city ? $city : "";  
$area = $area ? $area : "";  
if($province && $city==''){  
  global $db; $i = 1;  

  $result = $db->query("SELECT DISTINCT city FROM ".TABLE_CITY." WHERE province='$province' ORDER BY cityid");  
  while($r = $db->fetch_array($result))  
    {  
       $r[city]=iconv('gb2312','UTF-8',$r[city]);  
echo "obj.options[obj.options.length] = new Option('".$r[city]."','".$r[city]."');\n";   
$i++;  
    }  
  $resultarea = $db->query("SELECT DISTINCT city FROM ".TABLE_CITY." WHERE province='$province' ORDER BY cityid");  
  $r = $db->fetch_array($resultarea);  
  $city = $r[city];  
  $resulta = $db->query("SELECT DISTINCT area FROM ".TABLE_CITY." WHERE city='$city' ORDER BY cityid");  
   while($ra = $db->fetch_array($resulta))  
    {  
       $ra[area]=iconv('gb2312','UTF-8',$ra[area]);  
echo "obja.options[obja.options.length] = new Option('".$ra[area]."','".$ra[area]."');\n";   
$i++;  
    }  


}  
if($city && $province==''){  
   global $db; $i = 1;  

   $result = $db->query("SELECT DISTINCT area FROM ".TABLE_CITY." WHERE city='$city' ORDER BY cityid");  
   while($r = $db->fetch_array($result))  
    {  
       $r[area]=iconv('gb2312','UTF-8',$r[area]);  
echo "obja.options[obja.options.length] = new Option('".$r[area]."','".$r[area]."');\n";   
$i++;  
    }  
}  
?>

地址信息数据库：

采用的是phpcms3.0里自带的数据库，我没有进行任何改动

本程序可以在phpcms3.0里直接使用，若在其他地方使用请自己修改

落伍首发 php+mysql 采用ajax技术的 省 市 地 3级联动无刷新菜单 源码

落伍首发 php+mysql 采用ajax技术的省市地 3级联动无刷新菜单源码