WordPress Bootstrap Navwalker移动端展开问题求助

Hey there! I can see why your mobile menu isn't expanding—let's break down the issues in your code and fix them step by step.

The Core Problems #

1. Nested <ul> Tags: You wrapped the wp_nav_menu() call inside a manual <ul class="nav navbar-nav">, but the navwalker already generates this <ul> for you (via the menu_class parameter). This creates invalid nested list structure that breaks Bootstrap's collapse functionality.
2. Incorrect Container Placement: The container parameter in wp_nav_menu() is set to create the collapse div, but you placed it inside a manual <ul> instead of having it as a sibling to the navbar-header—which is required for Bootstrap's toggle to work properly.

Corrected Navigation Code #

Here's the fixed version of your nav code, with comments explaining the changes:

<nav class="main-menu navbar navbar-bg thetop" role="navigation">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <!-- navbar-brand is hidden on larger screens, but visible when the menu is collapsed -->
      <a class="navbar-brand" href="<?php echo home_url(); ?>">
        <?php if (function_exists('the_custom_logo')) { the_custom_logo(); } else{ bloginfo('name'); } ?>
      </a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <?php 
    wp_nav_menu( array( 
      'theme_location' => 'primary', 
      'depth' => 2, 
      'container' => 'div', 
      'container_class' => 'collapse navbar-collapse', 
      'container_id' => 'bs-example-navbar-collapse-1', 
      'menu_class' => 'nav navbar-nav', 
      'fallback_cb' => 'WP_Bootstrap_Navwalker::fallback', 
      'walker' => new WP_Bootstrap_Navwalker()
    ) ); 
    ?>

    <!-- Search Form -->
    <form id="searchform" class="navbar-form navbar-right" role="form" action="<?php echo home_url( '/' ); ?>">
      <div class="input-group">
        <input type="text" class="form-control" name="s" placeholder="Ara">
        <span class="input-group-btn">
          <button type="submit" class="btn btn-default btn-primary -red">
            <span class="glyphicon glyphicon-search"></span>
          </button>
        </span>
      </div>
      <a href="#" class="btn btn-top-cta affirmation hidden-xs hidden-sm"></a>
    </form>
  </div>
</nav>

Additional Checks to Ensure It Works #

• Confirm Bootstrap Assets Are Loaded: Make sure your theme is properly including Bootstrap's CSS and JavaScript (Bootstrap depends on jQuery, so jQuery must load before Bootstrap JS).
• Verify Navwalker File: Double-check that wp-bootstrap-navwalker.php is in your theme's root directory (the same folder as functions.php), and that the file is up-to-date with the latest version of the navwalker.

That should get your mobile menu expanding correctly! Let me know if you run into any other issues.

内容的提问来源于stack exchange，提问作者Nick