1.引入JS and Jquery包
<!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>
<script src="sanji.js"></script>
</head>
<body>
<div id="sanji">
</div>
</body>
</html>
2.JS包代码
// JavaScript Document $(document).ready(function(e) { //向DIV里面扔三个下拉 var str = "<select id='sheng'></select><select id='shi'></select><select id='qu'></select>"; $("#sanji").html(str); FillSheng(); FillShi(); FillQu(); $("#sheng").change(function(){ FillShi(); FillQu(); }) $("#shi").change(function(){ FillQu(); }) }); //填充省的方法 function FillSheng() { var pcode = "0001"; $.ajax({ async:false, url:"chuli.php", data:{pcode:pcode}, type:"POST", dataType:"TEXT", success: function(data){ var hang = data.split("|"); var str = ""; for(var i=0;i<hang.length;i++) { var lie = hang[i].split("^"); str += "<option value='"+lie[0]+"'>"+lie[1]+"</option>"; } $("#sheng").html(str); } }); } //填充市的方法 function FillShi() { var pcode = $("#sheng").val(); $.ajax({ async:false, url:"chuli.php", data:{pcode:pcode}, type:"POST", dataType:"TEXT", success: function(data){ var hang = data.split("|"); var str = ""; for(var i=0;i<hang.length;i++) { var lie = hang[i].split("^"); str += "<option value='"+lie[0]+"'>"+lie[1]+"</option>"; } $("#shi").html(str); } }); } //填充区的方法 function FillQu() { var pcode = $("#shi").val(); $.ajax({ url:"chuli.php", data:{pcode:pcode}, type:"POST", dataType:"TEXT", success: function(data){ var hang = data.split("|"); var str = ""; for(var i=0;i<hang.length;i++) { var lie = hang[i].split("^"); str += "<option value='"+lie[0]+"'>"+lie[1]+"</option>"; } $("#qu").html(str); } }); }
3.PHP处理页面
<?php include("DBDA.class.php"); $db = new DBDA(); $pcode = $_POST["pcode"]; $sql = "select * from chinastates where parentareacode='{$pcode}'"; echo $db->StrQuery($sql);