themes-wordpress/gazette/js/navigation.js

( function( $ ) {

	var debounce = function( func, wait ) {
		var timeout, args, context, timestamp;
		return function() {
			context = this;
			args = [].slice.call( arguments, 0 );
			timestamp = new Date();
			var later = function() {
				var last = ( new Date() ) - timestamp;
				if ( last < wait ) {
					timeout = setTimeout( later, wait - last );
				} else {
					timeout = null;
					func.apply( context, args );
				}
			};
			if ( ! timeout ) {
				timeout = setTimeout( later, wait );
			}
		};
	};

	function menuDropdownToggle() {
		$( '.main-navigation .page_item_has_children > a, .main-navigation .menu-item-has-children > a, .widget_nav_menu .page_item_has_children > a, .widget_nav_menu .menu-item-has-children > a' ).each( function() {
			if ( ! $( this ).find( '.dropdown-toggle' ).length ) {
				$( this ).append( '<button class="dropdown-toggle" aria-expanded="false"/>' );
			}
		} );

		if ( $( window ).width() > 839 ) {
			$( '.main-navigation .dropdown-toggle' ).remove();
		}
	}

	$( window ).load( menuDropdownToggle ).resize( debounce( menuDropdownToggle, 500 ) );

	$( window ).load( function() {
		$( '.dropdown-toggle' ).click( function( event ) {
			event.preventDefault();
			$( this ).toggleClass( 'toggled' );
			$( this ).parent().next( '.children, .sub-menu' ).toggleClass( 'toggled' );
			$( this ).attr( 'aria-expanded', $( this ).attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
		} );
	} );

} )( jQuery );

( function() {

	var container, button, menu;

	container = document.getElementById( 'site-navigation' );
	if ( ! container ) {
		return;
	}

	button = container.getElementsByTagName( 'button' )[0];
	if ( 'undefined' === typeof button ) {
		return;
	}

	menu = container.getElementsByTagName( 'ul' )[0];
	if ( 'undefined' === typeof menu ) {
		button.style.display = 'none';
		return;
	}
	menu.setAttribute( 'aria-expanded', 'false' );

	if ( -1 === menu.className.indexOf( 'nav-menu' ) ) {
		menu.className += ' nav-menu';
	}

	button.onclick = function() {
		if ( -1 !== container.className.indexOf( 'toggled' ) ) {
			container.className = container.className.replace( ' toggled', '' );
			button.setAttribute( 'aria-expanded', 'false' );
			menu.setAttribute( 'aria-expanded', 'false' );
		} else {
			container.className += ' toggled';
			button.setAttribute( 'aria-expanded', 'true' );
			menu.setAttribute( 'aria-expanded', 'true' );
		}
	};

} )();