javascript - 修复触摸设备上的响应式导航

Question

我正在使用 WordPress _s 主题创建一个网站，并尝试使用其 native 导航文件 + 为了使用子菜单而进行的一些修改。

这里是该网站的链接: http://www.listsofscholarships.com/

在我的电脑上，我可以看到它在 Chrome 或 Firefox 中运行，就像我希望它运行一样，但在触摸设备上，问题是我无法双击来关闭每个子菜单。

我尝试了一些方法，但似乎无法解决这个问题，任何帮助将不胜感激，谢谢!

这是它的 JavaScript:

/**
 * File navigation.js.
 *
 * Handles toggling the navigation menu for small screens and enables TAB key
 * navigation support for dropdown menus.
 */
( function() {
    var container, button, menu, links, subMenus, i, len;

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

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

    menu = container.getElementsByTagName( 'ul' )[0];

    // Hide menu toggle button if menu is empty and return early.
    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' );
        }
    };

    // Get all the link elements within the menu.
    links    = menu.getElementsByTagName( 'a' );
    subMenus = menu.getElementsByTagName( 'ul' );

    // Set menu items with submenus to aria-haspopup="true".
    for ( i = 0, len = subMenus.length; i < len; i++ ) {
        subMenus[i].parentNode.setAttribute( 'aria-haspopup', 'true' );
    }

    // Each time a menu link is focused or blurred, toggle focus.
    for ( i = 0, len = links.length; i < len; i++ ) {
        links[i].addEventListener( 'mouseup', toggleFocused, true );
    }

    /**
     * Sets or removes .focus class on an element.
     */
    function toggleFocused(event) {
        var self = this;

        if(document.getElementById('site-navigation').classList.contains('toggled')){

            // Move up through the ancestors of the current link until we hit .nav-menu.
            while ( -1 === self.className.indexOf( 'nav-menu' ) ) {

                // On li elements toggle the class .focus.
                if ( 'li' === self.tagName.toLowerCase() ) {
                    if ( -1 !== self.className.indexOf( 'focus' ) ) {
                        self.className = self.className.replace( ' focus', '' );
                    } else {
                        self.className += ' focus';
                    }
                }

                self = self.parentElement;
            }

        }
    }

    // Each time a menu link is focused or blurred, toggle focus.
    for ( i = 0, len = links.length; i < len; i++ ) {
        links[i].addEventListener( 'touchstart', toggleFocus, true );
    }

    /**
     * Sets or removes .focus class on an element.
     */
    function toggleFocus(event) {
        var self = this;
        return false;
        /*event.preventDefault();*/
        event.stopPropagation();

        if(document.getElementById('site-navigation').classList.contains('toggled')){

            // Move up through the ancestors of the current link until we hit .nav-menu.
            while ( -1 === self.className.indexOf( 'nav-menu' ) ) {

                // On li elements toggle the class .focus.
                if ( 'li' === self.tagName.toLowerCase() ) {
                    if ( -1 !== self.className.indexOf( 'focus' ) ) {
                        self.className = self.className.replace( ' focus', '' );
                    } else {
                        self.className += ' focus';
                    }
                }

                self = self.parentElement;
            }

        }
    }

    /**
     * Toggles `focus` class to allow submenu access on tablets.
     */
    ( function( container ) {
        var touchStartFn, i,
            parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );

        if ( 'ontouchstart' in window ) {
            touchStartFn = function( e ) {
                var menuItem = this.parentNode, i;

                if ( ! menuItem.classList.contains( 'focus' ) ) {
                    e.preventDefault();
                    for ( i = 0; i < menuItem.parentNode.children.length; ++i ) {
                        if ( menuItem === menuItem.parentNode.children[i] ) {
                            continue;
                        }
                        menuItem.parentNode.children[i].classList.remove( 'focus' );
                    }
                    menuItem.classList.add( 'focus' );
                } else {
                    menuItem.classList.remove( 'focus' );
                }
            };

            for ( i = 0; i < parentLink.length; ++i ) {
                parentLink[i].addEventListener( 'touchstart', touchStartFn, false );
            }
        }
    }( container ) );
} )();

Answer 1

尝试删除toggleFocus函数

( function() {
    var container, button, menu, links, subMenus, i, len;

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

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

    menu = container.getElementsByTagName( 'ul' )[0];

    // Hide menu toggle button if menu is empty and return early.
    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' );
        }
    };

    // Get all the link elements within the menu.
    links    = menu.getElementsByTagName( 'a' );
    subMenus = menu.getElementsByTagName( 'ul' );

    // Set menu items with submenus to aria-haspopup="true".
    for ( i = 0, len = subMenus.length; i < len; i++ ) {
        subMenus[i].parentNode.setAttribute( 'aria-haspopup', 'true' );
    }

    // Each time a menu link is focused or blurred, toggle focus.
    for ( i = 0, len = links.length; i < len; i++ ) {
        links[i].addEventListener( 'mouseup', toggleFocused, true );
    }

    /**
     * Sets or removes .focus class on an element.
     */
    function toggleFocused(event) {
        var self = this;

        if(document.getElementById('site-navigation').classList.contains('toggled')){

            // Move up through the ancestors of the current link until we hit .nav-menu.
            while ( -1 === self.className.indexOf( 'nav-menu' ) ) {

                // On li elements toggle the class .focus.
                if ( 'li' === self.tagName.toLowerCase() ) {
                    if ( -1 !== self.className.indexOf( 'focus' ) ) {
                        self.className = self.className.replace( ' focus', '' );
                    } else {
                        self.className += ' focus';
                    }
                }

                self = self.parentElement;
            }

        }
    }

    // Each time a menu link is focused or blurred, toggle focus.
    for ( i = 0, len = links.length; i < len; i++ ) {
        links[i].addEventListener( 'touchstart', toggleFocus, true );
    }



    /**
     * Toggles `focus` class to allow submenu access on tablets.
     */
    ( function( container ) {
        var touchStartFn, i,
            parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' );

        if ( 'ontouchstart' in window ) {
            touchStartFn = function( e ) {
                var menuItem = this.parentNode, i;

                if ( ! menuItem.classList.contains( 'focus' ) ) {
                    e.preventDefault();
                    for ( i = 0; i < menuItem.parentNode.children.length; ++i ) {
                        if ( menuItem === menuItem.parentNode.children[i] ) {
                            continue;
                        }
                        menuItem.parentNode.children[i].classList.remove( 'focus' );
                    }
                    menuItem.classList.add( 'focus' );
                } else {
                    menuItem.classList.remove( 'focus' );
                }
            };

            for ( i = 0; i < parentLink.length; ++i ) {
                parentLink[i].addEventListener( 'touchstart', touchStartFn, false );
            }
        }
    }( container ) );
} )();