这是一个比较简单实用的菜单，最重要的是他不需要引用jQuery库。菜单在垂直方向上能做到自适应，当主菜单靠近顶部，子菜单将会在下面，当主菜单靠近底部，子菜单在上面。运用Modernizr的触摸检测功能，我们可以让子菜单的响应在pc上是hover，而在触摸设备上是点击。例子中还示范了如何在宽度比较窄的情况下如何调整布局。

html代码

<ul id="cbp-tm-menu"> <li> <a href="#">Home</a> </li> <li> <a href="#">Veggie made</a> <ul> <li><a href="#">Sorrel desert</a></li> <li><a href="#">Raisin kakadu</a></li> <li><a href="#">Plum salsify</a></li> <li><a href="#">Bok choy celtuce</a></li> <li><a href="#">Onion endive</a></li> <li><a href="#">Bitterleaf</a></li> <li><a href="#">Sea lettuce</a></li> </ul> </li> <li> <a href="#">Pepper tatsoi</a> <ul> <li><a href="#">Brussels sprout</a></li> <li><a href="#">Kakadu lemon</a></li> <li><a href="#">Juice green</a></li> <li><a href="#">Wine fruit</a></li> <li><a href="#">Garlic mint</a></li> <li><a href="#">Zucchini garnish</a></li> <li><a href="#">Sea lettuce</a></li> </ul> </li> <li> <a href="#">Sweet melon</a> <ul> <li><a href="#">Sorrel desert</a></li> <li><a href="#">Raisin kakadu</a></li> <li><a href="#">Plum salsify</a></li> <li><a href="#">Bok choy celtuce</a></li> <li><a href="#">Onion endive</a></li> <li><a href="#">Bitterleaf</a></li> </ul> </li> </ul>

css代码

/* Iconfont made with icomoon.com */ @font-face { font-family: 'cbp-tmicons'; src:url('../fonts/tmicons/cbp-tmicons.eot'); src:url('../fonts/tmicons/cbp-tmicons.eot?#iefix') format('embedded-opentype'), url('../fonts/tmicons/cbp-tmicons.woff') format('woff'), url('../fonts/tmicons/cbp-tmicons.ttf') format('truetype'), url('../fonts/tmicons/cbp-tmicons.svg#cbp-tmicons') format('svg'); font-weight: normal; font-style: normal; } /* reset list style */ .cbp-tm-menu, .cbp-tm-menu ul { list-style: none; } /* set menu position; change here to set to relative or float, etc. */ .cbp-tm-menu { display: block; position: absolute; z-index: 1000; bottom: 0; width: 100%; background: #47a3da; text-align: right; padding: 0 2em; margin: 0; text-transform: capitalize; } /* first level menu items */ .cbp-tm-menu > li { display: inline-block; margin: 0 2.6em; position: relative; } .cbp-tm-menu > li > a { line-height: 4em; padding: 0 0.3em; font-size: 1.2em; display: block; color: #fff; } .no-touch .cbp-tm-menu > li > a:hover, .no-touch .cbp-tm-menu > li > a:active { color: #02639d; } /* sumbenu with transitions */ .cbp-tm-submenu { position: absolute; display: block; visibility: hidden; opacity: 0; padding: 0; text-align: left; pointer-events: none; -webkit-transition: visibility 0s, opacity 0s; -moz-transition: visibility 0s, opacity 0s; transition: visibility 0s, opacity 0s; } .cbp-tm-show .cbp-tm-submenu { width: 16em; left: 50%; margin: 0 0 0 -8em; opacity: 1; visibility: visible; pointer-events: auto; -webkit-transition: visibility 0s, opacity 0.3s; -moz-transition: visibility 0s, opacity 0.3s; transition: visibility 0s, opacity 0.3s; } .cbp-tm-show-above .cbp-tm-submenu { bottom: 100%; padding-bottom: 10px; } .cbp-tm-show-below .cbp-tm-submenu { top: 100%; padding-top: 10px; } /* extreme cases: not enough space on the sides */ .cbp-tm-nospace-right .cbp-tm-submenu { right: 0; left: auto; } .cbp-tm-nospace-left .cbp-tm-submenu { left: 0; } /* last menu item has to fit on the screen */ .cbp-tm-menu > li:last-child .cbp-tm-submenu { right: 0; } /* arrow: depending on where the menu will be shown, we set the right position for the arrow */ .cbp-tm-submenu:after { border: solid transparent; content: " "; height: 0; width: 0; position: absolute; pointer-events: none; } .cbp-tm-show-above .cbp-tm-submenu:after { top: 100%; margin-top: -10px; } .cbp-tm-show-below .cbp-tm-submenu:after { bottom: 100%; margin-bottom: -10px; } .cbp-tm-submenu:after { border-color: transparent; border-width: 16px; margin-left: -16px; left: 50%; } .cbp-tm-show-above .cbp-tm-submenu:after { border-top-color: #fff; } .cbp-tm-show-below .cbp-tm-submenu:after { border-bottom-color: #fff; } .cbp-tm-submenu > li { display: block; background: #fff; } .cbp-tm-submenu > li > a { padding: 5px 2.3em 5px 0.6em; /* top/bottom paddings in 'em' cause a tiny "jump" in Chrome on Win */ display: block; font-size: 1.2em; position: relative; color: #47a3da; border: 4px solid #fff; -webkit-transition: all 0.2s; -moz-transition: all 0.2s; transition: all 0.2s; } .no-touch .cbp-tm-submenu > li > a:hover, .no-touch .cbp-tm-submenu > li > a:active { color: #fff; background: #47a3da; } /* the icons (main level menu icon and sublevel icons) */ .cbp-tm-submenu li a:before, .cbp-tm-menu > li > a:before { font-family: 'cbp-tmicons'; speak: none; font-style: normal; font-weight: normal; font-variant: normal; text-transform: none; line-height: 1; vertical-align: middle; margin-right: 0.6em; -webkit-font-smoothing: antialiased; } .cbp-tm-submenu li a:before { position: absolute; top: 50%; margin-top: -0.5em; right: 0.5em; } .cbp-tm-menu > li > a:not(:only-child):before { content: "f0c9"; font-size: 60%; opacity: 0.3; } .cbp-tm-icon-archive:before { content: "e002"; } .cbp-tm-icon-cog:before { content: "e003"; } .cbp-tm-icon-users:before { content: "e004"; } .cbp-tm-icon-earth:before { content: "e005"; } .cbp-tm-icon-location:before { content: "e006"; } .cbp-tm-icon-mobile:before { content: "e007"; } .cbp-tm-icon-screen:before { content: "e008"; } .cbp-tm-icon-mail:before { content: "e009"; } .cbp-tm-icon-contract:before { content: "e00a"; } .cbp-tm-icon-pencil:before { content: "e00b"; } .cbp-tm-icon-article:before { content: "e00c"; } .cbp-tm-icon-clock:before { content: "e00d"; } .cbp-tm-icon-videos:before { content: "e00e"; } .cbp-tm-icon-pictures:before { content: "e00f"; } .cbp-tm-icon-link:before { content: "e010"; } .cbp-tm-icon-refresh:before { content: "e011"; } .cbp-tm-icon-help:before { content: "e012"; } /* Media Queries */ @media screen and (max-width: 55.6875em) { .cbp-tm-menu { font-size: 80%; } } @media screen and (max-height: 25.25em), screen and (max-width: 44.3125em) { .cbp-tm-menu { font-size: 100%; position: relative; text-align: center; padding: 0; top: auto; } .cbp-tm-menu > li { display: block; margin: 0; border-bottom: 4px solid #3793ca; } .cbp-tm-menu > li:first-child { border-top: 4px solid #3793ca; } li.cbp-tm-show > a, .no-touch .cbp-tm-menu > li > a:hover, .no-touch .cbp-tm-menu > li > a:active { color: #fff; background: #02639d; } .cbp-tm-submenu { position: relative; display: none; width: 100%; } .cbp-tm-submenu > li { padding: 0; } .cbp-tm-submenu > li > a { padding: 0.6em 2.3em 0.6em 0.6em; border: none; border-bottom: 2px solid #6fbbe9; } .cbp-tm-submenu:after { display: none; } .cbp-tm-menu .cbp-tm-show .cbp-tm-submenu { display: block; width: 100%; left: 0; margin: 0; padding: 0; bottom: auto; top: auto; } }

javascript代码

/** * cbpTooltipMenu.js v1.0.0 * http://www.codrops.com * * Licensed under the MIT license. * http://www.opensource.org/licenses/mit-license.php * * Copyright 2013, Codrops * http://www.codrops.com */ ;( function( window ) { 'use strict'; var document = window.document, docElem = document.documentElement; function extend( a, b ) { for( var key in b ) { if( b.hasOwnProperty( key ) ) { a[key] = b[key]; } } return a; } // from https://github.com/ryanve/response.js/blob/master/response.js function getViewportH() { var client = docElem['clientHeight'], inner = window['innerHeight']; if( client < inner ) return inner; else return client; } // http://stackoverflow.com/a/11396681/989439 function getOffset( el ) { return el.getBoundingClientRect(); } // http://snipplr.com/view.php?codeview&id=5259 function isMouseLeaveOrEnter(e, handler) { if (e.type != 'mouseout' && e.type != 'mouseover') return false; var reltg = e.relatedTarget ? e.relatedTarget : e.type == 'mouseout' ? e.toElement : e.fromElement; while (reltg && reltg != handler) reltg = reltg.parentNode; return (reltg != handler); } function cbpTooltipMenu( el, options ) { this.el = el; this.options = extend( this.defaults, options ); this._init(); } cbpTooltipMenu.prototype = { defaults : { // add a timeout to avoid the menu to open instantly delayMenu : 100 }, _init : function() { this.touch = Modernizr.touch; this.menuItems = document.querySelectorAll( '#' + this.el.id + ' > li' ); this._initEvents(); }, _initEvents : function() { var self = this; Array.prototype.slice.call( this.menuItems ).forEach( function( el, i ) { var trigger = el.querySelector( 'a' ); if( self.touch ) { trigger.addEventListener( 'click', function( ev ) { self._handleClick( this, ev ); } ); } else { trigger.addEventListener( 'click', function( ev ) { if( this.parentNode.querySelector( 'ul.cbp-tm-submenu' ) ) { ev.preventDefault(); } } ); el.addEventListener( 'mouseover', function(ev) { if( isMouseLeaveOrEnter( ev, this ) ) self._openMenu( this ); } ); el.addEventListener( 'mouseout', function(ev) { if( isMouseLeaveOrEnter( ev, this ) ) self._closeMenu( this ); } ); } } ); }, _openMenu : function( el ) { var self = this; clearTimeout( this.omtimeout ); this.omtimeout = setTimeout( function() { var submenu = el.querySelector( 'ul.cbp-tm-submenu' ); if( submenu ) { el.className = 'cbp-tm-show'; if( self._positionMenu( el ) === 'top' ) { el.className += ' cbp-tm-show-above'; } else { el.className += ' cbp-tm-show-below'; } } }, this.touch ? 0 : this.options.delayMenu ); }, _closeMenu : function( el ) { clearTimeout( this.omtimeout ); var submenu = el.querySelector( 'ul.cbp-tm-submenu' ); if( submenu ) { // based on https://github.com/desandro/classie/blob/master/classie.js el.className = el.className.replace(new RegExp("(^|s+)" + "cbp-tm-show" + "(s+|$)"), ' '); el.className = el.className.replace(new RegExp("(^|s+)" + "cbp-tm-show-below" + "(s+|$)"), ' '); el.className = el.className.replace(new RegExp("(^|s+)" + "cbp-tm-show-above" + "(s+|$)"), ' '); } }, _handleClick : function( el, ev ) { var item = el.parentNode, items = Array.prototype.slice.call( this.menuItems ), submenu = item.querySelector( 'ul.cbp-tm-submenu' ) // first close any opened one.. if( this.current && items.indexOf( item ) !== this.current ) { this._closeMenu( this.el.children[ this.current ] ); this.el.children[ this.current ].querySelector( 'ul.cbp-tm-submenu' ).setAttribute( 'data-open', 'false' ); } if( submenu ) { ev.preventDefault(); var isOpen = submenu.getAttribute( 'data-open' ); if( isOpen === 'true' ) { this._closeMenu( item ); submenu.setAttribute( 'data-open', 'false' ); } else { this._openMenu( item ); this.current = items.indexOf( item ); submenu.setAttribute( 'data-open', 'true' ); } } }, _positionMenu : function( el ) { // checking where's more space left in the viewport: above or below the element var vH = getViewportH(), ot = getOffset(el), spaceUp = ot.top , spaceDown = vH - spaceUp - el.offsetHeight; return ( spaceDown <= spaceUp ? 'top' : 'bottom' ); } } // add to global namespace window.cbpTooltipMenu = cbpTooltipMenu; } )( window );

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