模板部分代码：

<form method='post' action='' id='myform' name='myform'>

<dl><dt>地址</dt>

<dd>

<select name='prov' id='prov'>

<option value=''>省份</option>

<?php $prov=M('')->where($where)->order('order')->select();?>

<?php foreach($prov as $k){?>

<option value='<?php echo $k["id"];?>'><?php echo $k['name'];?></option>

<?php }?>

</select>

<select name='city' id='city'>

<option value=''>城市</option>

</select>

<select name='zone' id='zone'>

<option value=''>区域</option>

</select>

</dd>

</dl>

</form>

<script>

$('#prov').on('change',function(){

if($(this).val()=='')

$('#city').empty();

else {

var prov=$(this).val();

$.get('/index.php/moduel/controller/getcity?prov='+prov,function(data){

var s='';

$.each(data,function(i,n){

s+='<option value="'+n.id+'">'+n.name+'</option>';

});

$('#city').html(s);

$('#city').trigger('change');

});

}

});

$('#city').on('change',function(){

if($(this).val()=='')

$('#zone').empty();

else {

var city=$(this).val();

$.get('/index.php/moduel/controller/getzone?city='+city,function(data){

var s='';

$.each(data,function(i,n){

s+='<option value="'+n.id+'">'+n.name+'</option>';

});

$('#zone').html(s);

});

}

});

</script>

控制器部分代码：

<?php

namespace app\moduel\controller;

class Controller extends controller

{

public function getcity()

{

$prov=$_GET['prov'];

$where=;

if($prov==2||$prov==3||$prov==4||$prov==5)
                    $where=array('linkageid'=>$prov,'keyid'=>1,'city'=>1);

$data=;

return $data;

}

public function getzone()

{

$city=$_GET['city'];

$where=;

$data=;

return $data;

}

}

?>