答案 0 :(得分：1)
我认为这篇文章恰好包含了您的需求！
WordPress菜单默认显示为无序列表。您可能希望将它们显示为选择菜单。下面是创建菜单“walker”的示例，该菜单将其呈现为选择菜单。当您使用wp_nav_menu（）显示菜单时，请包含＆＃39; walker＆＃39; =＆GT;新的Walker_Nav_Menu_Dropdown（）告诉WordPress使用这种格式而不是默认格式。
的functions.php
<?php
// Nav Menu Dropdown Class
include_once( CHILD_DIR . '/lib/classes/nav-menu-dropdown.php' );
/**
* Mobile Menu
*
*/
function be_mobile_menu() {
wp_nav_menu( array(
'theme_location' => 'mobile',
'walker' => new Walker_Nav_Menu_Dropdown(),
'items_wrap' => '<div class="mobile-menu"><form><select onchange="if (this.value) window.location.href=this.value">%3$s</select></form></div>',
) );
}
add_action( 'genesis_before_header', 'be_mobile_menu' );
NAV-菜单dropdown.php
class Walker_Nav_Menu_Dropdown extends Walker_Nav_Menu {
function start_lvl(&$output, $depth){
$indent = str_repeat("\t", $depth); // don't output children opening tag (`<ul>`)
}
function end_lvl(&$output, $depth){
$indent = str_repeat("\t", $depth); // don't output children closing tag
}
/**
* Start the element output.
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $item Menu item data object.
* @param int $depth Depth of menu item. May be used for padding.
* @param array $args Additional strings.
* @return void
*/
function start_el(&$output, $item, $depth, $args) {
$url = '#' !== $item->url ? $item->url : '';
$output .= '<option value="' . $url . '">' . $item->title;
}
function end_el(&$output, $item, $depth){
$output .= "</option>\n"; // replace closing </li> with the option tag
}
}