控制层：
<?phpnamespace app\index\controller;
use think\Controller;use think\Db;
class Addr extends Controller{ public function addr(){ $one = Db::name(‘global_region‘) -> where([‘parent_id‘ => 0]) -> select(); return view(‘addr‘,[‘one‘=>$one]); }
public function two(){ $region_id = input(‘region_id‘); $two = Db::name(‘global_region‘) -> where([‘parent_id‘ => $region_id]) -> select(); echo json_encode($two); }}
视图层：
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body><center> <form id="form"> <table> <tr> <td width="150"> 国家：<select id="one"> <option value="--请选择--">--请选择--</option> {volist name="one" id="vo"} <option value="{$vo.region_id}">{$vo.region_name}</option> {/volist} </select> </td> <td width="150"> 省份：<select id="two"> <option value="--请选择--">--请选择--</option>
</select> </td> <td width="200"> 区域、乡、镇：<select id="three"> <option value="--请选择--">--请选择--</option>
</select> </td> </tr> </table> </form></center></body></html><script src="__STATIC__/jquery-3.3.1.min.js"></script><script> $(‘#one‘).change(function(){ var region_id = $(this).val(); $.ajax({ url:"{:url(‘addr/two‘)}", data:{region_id:region_id}, method:"post" }).done(function(msg){ var res = JSON.parse(msg); console.log(msg); var str = ""; $.each(res,function (k,v) { str += "<option value=‘"+v.region_id+"‘>"+v.region_name+"</option>"; }); $(‘#two‘).append(str); }) }); $(‘#two‘).change(function(){ var region_id = $(this).val(); $.ajax({ url:"{:url(‘addr/two‘)}", data:{region_id:region_id}, method:"post" }).done(function(msg){ var res = JSON.parse(msg); // console.log(msg); var str = ""; $.each(res,function (k,v) { str += "<option value=‘"+v.region_id+"‘>"+v.region_name+"</option>"; }); $(‘#three‘).append(str); }) })</script>
原文地址：https://www.cnblogs.com/wanglongfei/p/9806773.html
时间： 2024-07-29 20:12:44