数据库
数据库下载地址：https://files.cnblogs.com/files/fan-bk/packet_region.zip
php
<?php
namespace appindexcontroller;
use thinkController;
use thinkDb;
use thinkfacadeRequest;
class Index extends Controller
{
public function index()
{
if (Request::isPost()) {
$data = Request::param();
$id = $data['pro_id'];
$region = Db::name('packet_region')->where(['parent_id' => $id])->select();
$opt = '<option>--请选择--</option>';
foreach($region as $key=>$val){
$opt .= "<option value='{$val['id']}'>{$val['name']}</option>";
}
echo json_encode($opt);
die;
}
$region = Db::name('packet_region')->where(['level_type' => 1])->select();
$this->assign('region', $region);
return $this->fetch();
}
public function hello($name = 'ThinkPHP5')
{
return 'hello,' . $name;
}
}
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<!-- 省份 -->
<select name="pro" id="pro">
<option>--请选择--</option>
{foreach $region as $vo}
<option value="{$vo.id}">{$vo.name}</option>
{/foreach}
</select>
<!-- 城市 -->
<select name="city" id="city">
<option>--请选择省--</option>
</select>
<!-- 区县 -->
<select name="area" id="area">
<option>--请选择市--</option>
</select>
<script src="https://cdn.bootcss.com/jquery/3.3.0/jquery.min.js"></script>
<script>
$('#pro').change(function(){
$.ajax({
type:"post",
url:"{:url('index/index')}",
data:'pro_id='+$('#pro').val(),
dataType:"json",
success:function(data){
console.log(data);
$('#city').html(data);
$('#area').html('<option>--请选择市--</option>');
}
});
});
$('#city').change(function(){
$.ajax({
type:"post",
url:"{:url('index/index')}",
data:'pro_id='+$('#city').val(),
dataType:"json",
success:function(data){
console.log(data);
$('#area').html(data);
}
});
});
</script>
</body>
</html>
参考：http://www.thinkphp.cn/topic/41905.html