我正在尝试让ajax正常工作，因此当用户输入邮政编码并单击提交时，会出现一个警报，说明他们输入的邮政编码。

我对AJAX真的很陌生，所以如果下面的代码很糟糕，请原谅我！

单击“提交”时，会出现一个警报框，但会显示整个页面的源代码，而不是中的消息postcode_ajax2.

有人能帮忙吗？

function ajax_postcode_form_init() {
    wp_register_script(\'ajax-login-script\', get_bloginfo(\'stylesheet_directory\'). \'/ajax-postcode-script.js\', array(\'jquery\') ); 
    wp_enqueue_script(\'ajax-login-script\');

    wp_localize_script( \'ajax-login-script\', \'ajax_login_object\', array( 
        \'ajax_url\' => admin_url( \'admin-ajax.php\' ),
    ));

    // Enable the user with no privileges to run ajax_login() in AJAX
    add_action( \'wp_ajax_nopriv_ajaxlogin\', \'postcode_ajax2\' );
}

add_action(\'init\', \'ajax_postcode_form_init\');



function postcode_ajax2()  {
$postcode = false;
if(isset($_POST[\'postcode\'])){
    $postcode = $_POST[\'postcode\'];
}

echo \'Received postcode was: \' . $postcode;

die();

}

var $ = jQuery.noConflict();
            $(document).ready(function(){
                $(\'#postcode_checker\').on(\'submit\', function(e){
                    //Stop the form from submitting itself to the server.
                    e.preventDefault();
                    var postcode = $(\'#postcode\').val();
                    console.log(postcode);

                    $.ajax({
                        type: "POST",
                        url: ajax_login_object.ajaxurl,
                        data: {
                                action: "postcode_ajax2",
                                postcode: postcode
                        },
                         success: function(data) {
                            alert(data);
                        },
                        error : function(error){ 
                            console.log(error) 
                        }
                    });
                });
});
// JavaScript Document