我为用户提交表单创建了一个快捷代码。我想在不加载页面的情况下提交此表单（Ajax）。

这是我的短代码

add_shortcode(\'et-test-plugin_shortcode\', function($atts, $content) {

    $atts = shortcode_atts(array(
        \'name-field\' => \'Name\',
        \'phone-field\' => \'Phone Number\',
        \'email-field\' => \'Email Address\',
        \'budget-field\' => \'Desired Budget\',
        \'min-budget\' => \'1000\',
        \'max-budget\' => \'10000\',
        \'message-field\' => \'Message\',
        \'submit-btn-label\' => \'Submit\',
    ), $atts);

    ob_start();
    ?>
    <form action="<?php echo admin_url(\'admin-ajax.php\'); ?>" class="et_test_form" method="post">
        <div class="row">
            <div class="col-sm-6">
                <input type="text" name="_name" placeholder="<?php echo esc_attr($atts[\'name-field\']) ?>">
            </div>
            <div class="col-sm-6">
                <input type="text" name="_phone" placeholder="<?php echo esc_attr($atts[\'phone-field\']) ?>">
            </div>
            <div class="col-sm-6">
                <input type="email" name="_email" placeholder="<?php echo esc_attr($atts[\'email-field\']) ?>">
            </div>
            <div class="col-sm-6">
                <input type="number" name="_budget" min="<?php echo esc_attr($atts[\'min-budget\']) ?>" max="<?php echo esc_attr($atts[\'max-budget\']) ?>" placeholder="<?php echo esc_attr($atts[\'budget-field\']) ?>">
            </div>
        </div>
        <textarea class="form-control" rows="3" cols="10" name="_message" placeholder="<?php echo esc_attr($atts[\'message-field\']) ?>"></textarea>
        <input type="submit" name="submit" value="<?php echo $atts[\'submit-btn-label\']; ?>"/>
        <div id="note"></div>
    </form>
    <?php

    $html = ob_get_clean();

    add_action(\'wp_ajax_et_test_plugin_create_post\', \'et_test_plugin_create_post\');
    add_action(\'wp_ajax_nopriv_et_test_plugin_create_post\', \'et_test_plugin_create_post\');

    function et_test_plugin_create_post() {
        if (isset($_POST[\'submit\'])) {
            $name = !empty($_POST[\'_name\']) ? $_POST[\'_name\'] : \'\';
            $phone = !empty($_POST[\'_phone\']) ? $_POST[\'_phone\'] : \'\';
            $email = !empty($_POST[\'_email\']) ? $_POST[\'_email\'] : \'\';
            $budget = !empty($_POST[\'_budget\']) ? $_POST[\'_budget\'] : \'\';
            $message = !empty($_POST[\'_message\']) ? $_POST[\'_message\'] : \'\';
            if ($name) {
                wp_insert_post(
                    array(
                        \'post_title\' => wp_strip_all_tags($name) . \' submitted a form\',
                        \'post_type\' => \'customer\',
                        \'post_status\' => \'private\', /* Or "draft", if required */
                        \'meta_input\' => array(
                            \'et-test-plugin_customer_name\' => wp_strip_all_tags($name),
                            \'et-test-plugin_customer_phone\' => wp_strip_all_tags($phone),
                            \'et-test-plugin_customer_email\' => wp_strip_all_tags($email),
                            \'et-test-plugin_customer_budget\' => wp_strip_all_tags($budget),
                            \'et-test-plugin_customer_message\' => wp_strip_all_tags($message),
                        )
                    )
                );
            }
        }
    }

    ?>
    <script type="text/javascript">
        var $a = jQuery.noConflict();

        $a(window).load(function(){

            $a(".et_test_form").submit(function(e){

                e.preventDefault();
                var input_data = $a(this).serialize();
                $a.ajax({
                    type: "POST",
                    url: "<?php echo admin_url(\'admin-ajax.php\') ?>",
                    data: input_data,
                    action: \'et_test_plugin_create_post\',
                    success: function(alrt){
                        $a("#note").ajaxComplete(function(event, request, settings){
                            if(alrt == "OK"){
                                result = "Thanks for sending the message.";
                                $a(".et_test_form").hide();
                            } else {
                                result = \'Error\';
                            }
                            $a(this).html(result);
                        });
                    }
                });

                return false;
            });
        });

    </script>
    <?php

    return $html;

});