如何防止在提交表单时加载页面

我终于设法让我的插件工作了。但是，在提交后，整个页面将与我的输出一起重新加载到表单上方。如何避免页面完全重新加载，并且在提交表单后不显示表单？

<?php    
function installer(){
    include(\'installer.php\');
}
register_activation_hook( __file__, \'installer\' ); //executes installer php when installing plugin to create new database

add_action(\'admin_menu\',\'result_menu\'); //wordpress admin menu creation

function result_menu()
{
    add_menu_page(\'Result\',\'Result\',\'administrator\',\'xenon-result\');
    add_submenu_page( \'xenon-result\', \'Manage Marks\', \' Manage Marks\', \'administrator\', \'Manage-Xenon-Marks\', \'Xenon_Marks\' );
}

function Xenon_Marks() //function to add marks addition form in admin view
{
    include(\'new/result-add-marks.php\');
}

function html_form_code() 
{
echo \'<form action="" method="post">\';
echo \'<fieldset>\';
echo \'<legend>Student Information</legend>\';
echo \'Roll Number: <input type="number" min="170001" max="171000" name="rollNumber"><br>\';
echo \'<input type="submit">\';
echo \'<input type ="reset">\';
echo \'</form>\';
}

function result_display(){
global $wpdb;
$student_id = $_POST[\'rollNumber\'];
$query = "SELECT * FROM `wp_xenonresult` WHERE `student_id` = $student_id";
$result = $wpdb->get_row($query);
echo $result->student_name;
}

if(isset($_POST[\'submit\']))
{
   result_display();
}

function display_shortcode() {
    ob_start();
    result_display();
    html_form_code();
    return ob_get_clean();
}

add_shortcode( \'xenon_result_display\', \'display_shortcode\' );
// Enable shortcodes in text widgets
add_filter(\'widget_text\',\'do_shortcode\');

$("form").on("submit", function(event) { var data = $(this).serialize()); $.ajax({ type: "POST", url: /path/to/admin-ajax.php, data: data, action: something_descriptive }) event.preventDefault(); });

add_filter(\'wp_ajax_something_descriptive\', \'your_ajax_handler\'); add_filter(\'wp_ajax_nopriv_something_descriptive\', \'your_ajax_handler\'); function your_ajax_handler() { /*do your form handling here, anything passed in the data object will be available as a $_POST variable. TO return content to the AJAX call echo it out. Be sure to die() at the end of the function*/ }

无法在模板函数.php中使用IS_HOME

我试图在标题中加载一个滑块，但只在主页上加载。如果有帮助的话，我正在使用Ultralight模板。我正在尝试（在template functions.php中）执行以下操作：<?php if ( is_page( \'home\' ) ) : ?> dynamic_sidebar( \'Homepage Widget\' ); <?php endif; ?> 但这行不通。现在，通过快速的google，我似乎需要将请

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无法在模板函数.php中使用IS_HOME