weixin_33713503 2020-04-11 08:19 采纳率: 0%
浏览 21


I know this is asked question but none has helped me. I have 2 fields product & sub_prod in my tables. I want to show options in sub_prod select according to option selected in product.I tried example described HERE it enables the sub_prod but it doesn't have any values. I have query with MYSQL and it gives values, hence query is correct. I alert(response) it shows me product's select option. I know I have a silly mistake but couldn't figure out.
my php page:

                <select name="product" id="product" class="form-control form-control-sm">
                            <option selected="selected">Select Product </option>

                            $sql = mysqli_query($con, "SELECT DISTINCT product From prod_masteer");
                            $row = mysqli_num_rows($sql);
                            while ($row = mysqli_fetch_array($sql)){
                            echo "<option value='". $row['product'] ."'>" .$row['product'] ."</option>" ;
                           <select name="sub_prod" id="sub_prod" class="form-control form-control-sm" disabled>
                            <option selected="selected">Select Sub product </option>
  <script type="text/javascript">
   $('#product').change(function() {
   var prod = $(this).val();
   //These are to disable enable other select
if( $(this).val() == "Vehicle") {
    $('#make').prop( "disabled", false );
    $('#model').prop( "disabled", false );
    $('#year').prop( "disabled", false );
} else {       
    $('#make').prop( "disabled", true );
    $('#model').prop( "disabled", true );
    $('#year').prop( "disabled", true );
    $('#sub_prod').prop( "disabled", false );


            success:function(response){//I tried here with html too
               // alert(response);
                //$('#city').html('<option value="">Select state first</option>'); 


my ajaxData.php

//Include database configuration file
include './db_config.php';

if(isset($_POST["product"]) && !empty($_POST["product"])){
//Get all state data

$query = $db->query("SELECT * FROM prod_masteer WHERE product = ".$_POST['product']." ORDER BY sub_prod ASC");

//Count total number of rows
$rowCount = $query->num_rows;

//Display states list
if($rowCount > 0){
    echo '<option value="">Select sub Product</option>';
    while($row = $query->fetch_assoc()){ 
        echo '<option value="'.$row['sub_prod'].'">'.$row['sub_prod'].'</option>';
    echo '<option value="">State not available</option>';

Here is the screenshot of the response I am getting from developer console. enter image description here

  • 写回答

0条回答 默认 最新



      • ¥15 存储过程或函数中的结果集类型变量如何使用。
      • ¥80 关于海信电视聚好看安装应用的问题
      • ¥15 vue引入sdk后的回调问题
      • ¥15 求一个智能家居控制的代码
      • ¥15 ad软件 pcb布线pcb规则约束编辑器where the object matpcb布线pcb规则约束编辑器where the object matchs怎么没有+15v只有no net
      • ¥15 虚拟机vmnet8 nat模式可以ping通主机,主机也能ping通虚拟机,但是vmnet8一直未识别怎么解决,其次诊断结果就是默认网关不可用
      • ¥20 求各位能用我能理解的话回答超级简单的一些问题
      • ¥15 yolov5双目识别输出坐标代码报错
      • ¥15 这个代码有什么语法错误
      • ¥15 给予STM32按键中断与串口通信