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
绝对原创
测试地址： http://www.mlmm.cn/mypage/?name=ceshi
测试页代码：
复制代码 代码如下:
<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>{$regionss(中华人民共和国)}</td></tr> </form> </body> </html>
regionss 函数代码：
QUOTE:
复制代码 代码如下:
//省市地3级联动下拉菜单函数 regionss 省.市.地 function regionss($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：
复制代码 代码如下:
//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
复制代码 代码如下:
<?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
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