<head> <script type="text/javascript" src="style/js/jquery.min.js"></script> <link href="style/css/bootstrap.min.css" rel="stylesheet"> <link href="style/css/site.min.css" rel="stylesheet"> <script type="text/javascript" src="style/js/jquery.min.js"></script> </head>
1 设备类型： 2 <select id="key_type" name="key_type"> 3 <option selected disabled style="display:none" value="">请选择</option> 4 <?php for ($i=0; $i <count($res_type); $i++): ?> 5 <option value="<?php echo $res_type[$i]['type']; ?>"> <?php echo $res_type[$i]['type']; ?> </option> 6 <?php endfor;?> 7 </select> 8 设备型号： 9 <select id="key_model" name="key_model" > 10 </select> 11 <script> 12 $(function(){ 13 $("#key_type").change(function(){ 14 var key_type = $('#key_type option:selected').val(); 15 16 if(key_type == 0){ 17 return; 18 }else{ 19 $.ajax({ 20 url:'./lib/get_dd.php', 21 type:'post', 22 data:{key_type:key_type}, 23 dataType:'json', 24 success:function(res){ 25 if(res.code == 200){ 26 var option = '<option>请选择类型</option>'; 27 var list = res.list; 28 for (var i = 0; i < list.length; i++) { 29 option += "<option value="+list[i]+">" + list[i] + "</option>"; 30 } 31 }else{ 32 var option = '<option>请选择类型</option>'; 33 } 34 $("#key_model").html(option); 35 36 } 37 38 }) 39 } 40 }) 41 }) 42 </script>
1 <?php 2 header('Content-type:application/json'); 3 require_once './info.class.php'; 4 5 $key_type= isset($_POST['key_type'])?$_POST['key_type']:''; 6 $se_type= isset($_POST['se_type'])?$_POST['se_type']:''; 7 $sel_type= isset($_POST['sel_type'])?$_POST['sel_type']:''; 8 9 $value; 10 if ($key_type!="") 11 { 12 $value=$key_type; 13 } 14 elseif($se_type!="") 15 { 16 $value=$se_type; 17 } 18 elseif($sel_type!="") 19 { 20 $value=$sel_type; 21 } 22 23 if ($value) { 24 $pdo=connect(); 25 $sql_model="SELECT model FROM equipment_dd_model Where type='".$value ."';"; 26 $stmt=$pdo->prepare($sql_model); 27 $stmt->execute(); 28 $res_model=$stmt->fetchAll(PDO::FETCH_ASSOC); 29 con_close($pdo); 30 31 $list = array(); 32 for($i=0;$i<count($res_model);$i++){ 33 $list[$i]=$res_model[$i]['model']; 34 } 35 echo json_encode(['code'=>200, 'list'=>$list]); 36 } else { 37 echo json_encode(['code'=>500]); 38 } 39 40 41 ?>