Will anyone help me in this regard. My problem is that when I ajax request WordPress, when I log that response in console it shows error/complete not response.

jQuery(document).ready(function($) {
$(".pincode_search_field").on('keyup', function(event) {
    var ajax_url = pin_shop.ajax_url;
    var pincode_search_field = $(this).val();
    var nonce  = $(this).data('nonce');

        url: ajax_url,
        type: 'POST',
        data: {
            'action'        : 'pincode_search_field',
            'nonce'         : nonce,
            'search_query'  : pincode_search_field,
    .done(function(response) {
    .fail(function() {


Here is my PHP code.

  add_action( "wp_ajax_pincode_search_field", 'pincode_search_field' );
add_action( "wp_ajax_nopriv_pincode_search_field", 'pincode_search_field' );

function pincode_search_field() {
    global $wpdb;
    $pincode = $_REQUEST['search_query'];
    if ( wp_verify_nonce( $_REQUEST['nonce'], "pin_shop_nonce") ) {
        $result['database_result'] = $wpdb->get_results("SELECT shop_id FROM cs_shop_details WHERE shop_pincode = $pincode");
        $result = json_encode( $result );
        echo $result;

Here is the enqueue script.

add_action( 'wp_enqueue_scripts', function(){
    wp_enqueue_script( 'pin-js', plugins_url() . '/pin-shop/inc/pin.js', array('jquery') );
    wp_localize_script( 'pin-js', 'pin_shop', array(
        'ajax_url' => admin_url('admin-ajax.php'), 
    ) );

EDIT: Here is the result in console log. enter image description here

1 Answer 1


As per jQuery documentation, dataType: 'json' is supported. That is the thing that is being returned and parsed by jQuery to your success function. There is more information needed to resolve your issue.

Does pin_shop.ajax_url properly resolve to //site.com/wp-admin/admin-ajax.php? If not, there's your first problem. (To check this, console.log(ajax_url); just before your $.ajax call. I see your enqueue has this.

(Also, did you notice you're not returning your result to the AJAX caller? I put a note of it in the code below.)

Next, you might not be sending your nonce. Check that $(this).data('nonce') resolves to the nonce? (To check this, console.log(nonce); just before your $.ajax call.)

Finally, you may not be resolving your nonce correctly on the server side. To primitively check this, comment out a few lines in your PHP code and see if success/complete is logged to the console, like so:

function pincode_search_field() {
    global $wpdb;
//  if ( wp_verify_nonce( $_REQUEST['nonce'], "pin_shop_nonce") ) {
        $result['database_result'] = $wpdb->get_results("SELECT ID FROM cs_shop_details WHERE pincode = '192124'");
        $result = json_encode( $result );
//  }

Lastly, there might be an error in your SQL (as in the tablecs_shop_details does not exist or the pincode field does not exist in that table). To check that, comment out $result['database_result'] = ... and set $result=array() so that an empty result will be returned (and make sure $result is echoed).

(Also, I'm new so if any of this helps, and upvote would be appreciated to help me get my score up so that I can comment.)

EDIT: A little debugging, and the problem was learned to be that the PHP function is not echo-ing the json encoded result: add echo $result; just before die().

EDIT 2: In helping to debug the JSON response. First, note the $wpdb->get_results() will return an array. You put that array into the database_result index of the $results array. So, your structure now looks like this...

Array (
    'database_result' => Array (
        [0] => Array(
            "shop_id" => 1
        ... (other results here, indexed sequentially)

So, this array is what is being returned to .done(). Access this array accordingly via the response JSON object passed to the related function. I think something like response.database_result[0]["shop_id"] or response.database_result[0].shop_id.

  • everything works fine, just showing undefined when i use response.database_result in console May 27, 2020 at 7:28
  • here is the status of code Request URL: localhost/cs/wp-admin/admin-ajax.php Request Method: POST Status Code: 200 OK Remote Address: Referrer Policy: no-referrer-when-downgrade May 27, 2020 at 7:31
  • You say "response in console it shows error/complete not response" ... that means the .fail() and .always() blocks of your AJAX are executing. In order for the .done() to execute, the AJAX call must be a success, failing which response.database_result will always be null. What is the value of ajax_url and nonce when logged in the manner I suggested?
    – Mort 1305
    May 27, 2020 at 7:32
  • that problem is solved by removing datatype. May 27, 2020 at 7:33
  • 1
    If you echo a json encoded object, AJAX will "guess" that you intended to put dataType: json in your AJAX call. Best practice is to define the dataType (so there is no guessing). Need a bit more info on the response output. What is the javascript you're using? Is it still console.log(response.database_result);?
    – Mort 1305
    May 27, 2020 at 7:54

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