Affichage des codes
1, le répertoire des cas est le suivant :
2, affichage de tous les codes :
conn.inc.php:
<?php define("HOST",'localhost'); define("USER",'root'); define("PWD",'root'); define("DBNAME",'php');
mysqli. php:
<?php include 'conn.inc.php'; $mysqli=new mysqli(HOST,USER,PWD,DBNAME); if($mysqli->connect_errno){ die('数据库链接出错'.$mysqli->connect_error); }
region.html:
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="./jquery-1.11.0.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function() { // 加载所有的省份 $.ajax({ type: "get", url: "region_action.php", // type=1表示查询省份 data: {"parent_id": "1", "type": "1"}, dataType: "json", success: function(data) { $("#provinces").html("<option value=''>请选择省份</option>"); $.each(data, function(i, item) { // alert(item.region_id); $("#provinces").append("<option value='" + item.region_id + "'>" + item.region_name + "</option>"); }); } }); $("#provinces").change(function() { $.ajax({ type: "get", url: "region_action.php", // type =2表示查询市 data: {"parent_id": $(this).val(), "type": "2"}, dataType: "json", success: function(data) { $("#citys").html("<option value=''>请选择市</option>"); $.each(data, function(i, item) { $("#citys").append("<option value='" + item.region_id + "'>" + item.region_name + "</option>"); }); } }); }); $("#citys").change(function() { $.ajax({ type: "get", url: "region_action.php", // type =2表示查询市 data: {"parent_id": $(this).val(), "type": "3"}, dataType: "json", success: function(data) { $("#countys").html("<option value=''>请选择县</option>"); $.each(data, function(i, item) { $("#countys").append("<option value='" + item.region_id + "'>" + item.region_name + "</option>"); }); } }); }); //显示地址 $("#countys").change(function() { var value = $("#provinces").find("option:selected").text() + $("#citys").find("option:selected").text() + $("#countys").find("option:selected").text(); // alert(value); $("#region").append("选择的地址是:"+"<input value='" + value + "'>"); }); }); </script> </head> <body> <h1 align="center">PHP+Ajax+Mysql省市县三级联动</h1> <table align="center" border="1" cellpadding="3" cellspacing="0" width="30%"> <tr bgcolor="skyblue"> <th>省份</th> <th>市</th> <th>县</th> </tr> <tr style="height: 100px"> <th> <select id="provinces"> <option value="">请选择省份</option> </select> </th> <th> <select id="citys"> <option value="">请选择市</option> </select> </th> <th> <select id="countys"> <option value="">请选择县</option> </select><br> </th> </tr> </table> <h4> <div align="center" id="region"></div></th> </h4> </body> </html>
region_action.php:
<?php header("Content-Type:text/html;charset=utf-8"); include './mysqli.php'; $type = isset($_GET["type"]) ? $_GET["type"] : ""; $parent_id = isset($_GET["parent_id"]) ? $_GET["parent_id"] : ""; // 链接数据库 if ($type == "" || $parent_id == "") { exit(json_encode(array("flag" => false, "msg" => "查询类型错误"))); } else { // 链接数据库 $sql="select *from global_region where parent_id=$parent_id AND region_type=$type"; $result=$mysqli->query($sql); if($result->num_rows>0) { $arr=[]; while ($row=$result->fetch_assoc()) { $arr[$row["region_id"]]['region_id']=$row["region_id"];//$arr[1]["title"]=$row["title"] $arr[$row["region_id"]]['region_name']=$row["region_name"];//$arr[1]["content"]=$arr["content"] } } $provinces_json = json_encode($arr); exit($provinces_json); } ?>