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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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175 | if ( $args->container ) { |
176 | /** |
177 | * Filters the list of HTML tags that are valid for use as menu containers. |
178 | * |
179 | * @since 3.0.0 |
180 | * |
181 | * @param string[] $tags The acceptable HTML tags for use as menu containers. |
182 | * Default is array containing 'div' and 'nav'. |
183 | */ |
184 | $allowed_tags = apply_filters( 'wp_nav_menu_container_allowedtags', array( 'div', 'nav' ) ); |
185 |
|
186 | if ( is_string( $args->container ) && in_array( $args->container, $allowed_tags, true ) ) { |
187 | $show_container = true; |
188 | $class = $args->container_class ? ' class="' . esc_attr( $args->container_class ) . '"' : ' class="menu-' . $menu->slug . '-container"'; |
189 | $id = $args->container_id ? ' id="' . esc_attr( $args->container_id ) . '"' : ''; |
190 | $aria_label = ( 'nav' === $args->container && $args->container_aria_label ) ? ' aria-label="' . esc_attr( $args->container_aria_label ) . '"' : ''; |
191 | $nav_menu .= '<' . $args->container . $id . $class . $aria_label . '>'; |
192 | } |
193 | } |