javascript - Codeigniter 使用 JavaScript 将数据从 View 传递到 Controller

Question

我想使用基于下拉值的javascript将两个以上的值从 View 传递到 Controller !这是我的代码

<select name="class" id="class">
   <option selected value='-1'>--Select class--</option>
   <?php foreach($classes as $class){ 
      echo '<option value="'.$class['class_id'].'">'.$class['class_name'].'</option>'; }
      ?>
</select>
<select name="subject" id="subject">
   <option selected value='-1'>--Select Subject--</option>
   <?php 
      foreach($subjects as $subject) {                       
        echo '<option value="'.$subject['subject_id'].'">'.$subject['subject_name'].'</option>';
      }
      ?>
</select>
<script type="text/javascript">
   $(document).on("change","#class",function(e){
   e.preventDefault();
   var classid = $(this).val(); 
   $.post('<?php echo  site_url("system_ctrl/select_student"); ?>',{"class_id":classid},function(responce){
   $("#names").html(responce);
   });
</script>

当类的值使用上面显示的 JavaScript 发生更改时，我想将 id subject 的值与 id class 的值一起发送到 Controller 。

Answer 1

您可以像这样传递任意数量的值，

$.post('<?php echo  site_url("system_ctrl/select_student"); ?>',{"class_id":classid, "subject":$('#subject').val()},function(responce){
    $("#names").html(responce);
});