可靠的下拉不能同时工作

I'm working on dependendable dropdown using Javascript and jQuery Ajax fetching the database from database.
First Dropdown menu :

$(document).ready(function () {         

        $(function() {   
            $.ajax({
                type: 'POST',
                url: 'getGroupzBase.php', 
                datatype: 'json',
                success: function(data) {
                    // Call this function on success                
                    console.log(data);
                    var yourArray = JSON.parse(data);
                    console.log(yourArray);                                          
                    $.each(yourArray, function (index, yourArray) {                 
                        $('#builder_group').append($('<option/>', { 
                            value: yourArray.id,
                            text : yourArray.name, 
                        }));
                    }); 
                },
                error: function() {
                    displayDialogBox('Error', err.toString());
                }
          });              
 });

HTML :

<select id="builder_group"></select>

Second dropdownmenu :

 $(document).ready(function () {            

            $(function() {   
                $.ajax({
                    type: 'POST',
                    url: 'getGroupzCode.php', 
                    datatype: 'json',
                    success: function(data) {
                        // Call this function on success                
                        console.log(data);
                        var yourArray = JSON.parse(data);
                        console.log(yourArray);                                          
                        $.each(yourArray, function (index, yourArray) {                 
                            $('#build_group').append($('<option/>', { 
                                value: yourArray.id,
                                text : yourArray.name, 
                            }));
                        }); 
                    },
                    error: function() {
                        displayDialogBox('Error', err.toString());
                    }
               });              
    });  

PHP :

<?php echo $form->dropDownList($model,'selectionList',array('rows'=>6, 'cols'=>50)); ?>  

Both this dropdownlists do not work together. What is causing it to not work at the same time.