为什么前端的wp-ajax返回0，但是在admin中它可以正常工作？

Question

These are the functions I used them in plugin. It works in backend but in frontend it respons 0 . I copy past the same code and also prefer admin_enqueue_scripts with wp_enqueue_scripts .

add_action( 'wp_ajax_my_action', 'my_action_callback' );
add_action( 'wp_ajax_nopriv_my_action', 'my_action_callback' );

function my_action_callback() {
global $wpdb;
$whatever = intval( $_POST['whatever'] );
$whatever += 10;
    echo $whatever;
wp_die();
}

function testajax(){
var data = {
    'action': 'my_action',
    'whatever': ajax_object.we_value      // We pass php values differently!
};

jQuery.post(ajax_object.ajax_url, data, function(response) {
    alert('Got this from the server: ' + response);
});
};

I used it by onClick event.

I used also

add_action( 'admin_enqueue_scripts', 'my_enqueue' );

for admin and

add_action( 'wp_enqueue_scripts', 'my_enqueue' );

for frontend

add_action( 'wp_enqueue_scripts', 'my_enqueue' );
function my_enqueue($hook) {

wp_enqueue_script( 'ajax-script',    get_stylesheet_directory_uri().'/my_query.js', array('jquery') );


  wp_localize_script( 'ajax-script', 'ajax_object',
        array( 'ajax_url' => admin_url( 'admin-ajax.php' ), 'we_value' => 1234 ) );   
}

This is the script I want to be loaded in my custom page just in custom page but it doesn't load in custom page. For loading I must use it in functions.php, then when I use it in functions.php, it will be loaded in all pages as it says in comments. There is the problem.

Answer 1

Is it possible that the URL you're trying to call doesn't exist in the Admin? Try using ajaxurl instead of ajax_object.ajax_url

Answer 2

Ajax URL isn't available on front-end by default. You must localize it before using:

wp_localize_script('my_enqueue', 'ajax_object', array('ajax_url' => admin_url('wp-ajax.php')));