一、Lateral On-Scroll Sliding with jQuery的使用
1. HTML结构
<div id="ss-container" class="ss-container"> <div class="ss-row"> <div class="ss-left"> <h2 id="november">November</h2> </div> <div class="ss-right"> <h2>2011</h2> </div> </div> <div class="ss-row ss-medium"> <div class="ss-left"> <a href="#" class="ss-circle ss-circle-1">Some title</a> </div> <div class="ss-right"> <h3> <span>November 28, 2011</span> <a href="#">Some Title</a> </h3> </div> </div> <div class="ss-row ss-large"> // ss-row ss-small ... </div> <!-- more rows... --> </div>
2. CSS
.ss-container{ width: 100%; position: relative; text-align: left; float: left; overflow: hidden; // don’t show scrollbar on the page padding-bottom: 500px; } /*create the middle line throughout the container */ .ss-container:before{ position: absolute; width: 4px; background: rgba(17,17,22,0.8); top: 0px; left: 50%; // position in the middle of the container margin-left: -2px; content: ''; height: 100%; } .ss-row{ width: 100%;clear: both; float: left; position: relative; padding: 30px 0;} .ss-left, .ss-right{ float: left; width: 48%; position: relative;} .ss-right{ padding-left: 2%;} .ss-left{ text-align: right; float: left; padding-right: 2%;} .ss-container h2{ font-size: 40px; text-transform: uppercase; color: rgba(78,84,123,0.2); text-shadow: 0px 1px 1px #fff; padding: 20px 0px;} .ss-container h3{ margin-top: 34px;padding: 10px 15px;background: rgba(26, 27, 33, 0.6); text-shadow: 1px 1px 1px rgba(26, 27, 33, 0.8)} /* create a circle, set the border radius of the anchor to 50% and add some neat box shadow*/ .ss-circle{ border-radius: 50%; overflow: hidden; display: block; text-indent: -9000px; text-align: left; box-shadow: 0px 2px 5px rgba(0,0,0,0.7) inset, 0px 0px 0px 12px rgba(61,64,85,0.3); background-size: cover; background-color: #f0f0f0; background-repeat: no-repeat; background-position: center center; } /*three different circle sizes*/ .ss-small .ss-circle{ width: 100px; height: 100px;} .ss-medium .ss-circle{ width: 200px; height: 200px;} .ss-large .ss-circle{ width: 300px;height: 300px;} .ss-left .ss-circle{ float: right; margin-right: 30%;} .ss-right .ss-circle{ float: left; margin-left: 30%;} /*the line and the arrow that will point to the middle line*/ .ss-circle-deco:before{ width: 29%; height: 0px; border-bottom: 5px dotted #ddd; border-bottom: 5px dotted rgba(17, 17, 22, 0.3); box-shadow: 0px 1px 1px #fff; position: absolute; top: 50%; content: ''; margin-top: -3px; } .ss-left .ss-circle-deco:before{ right: 2%; } .ss-right .ss-circle-deco:before{ left: 2%; } /* little arrow will be created by the border style and depending on if it’s a child of the left or right side*/ .ss-circle-deco:after{ width: 0px; height: 0px; border-top: 10px solid transparent; border-bottom: 10px solid transparent; content: ''; position: absolute; top: 50%; margin-top: -10px; } .ss-left .ss-circle-deco:after{ right: 0; border-right: 10px solid rgba(17,17,22,0.8);} .ss-right .ss-circle-deco:after{ left: 0;border-left: 10px solid rgba(17,17,22,0.8);} /*adjust the position of the headings on the other side according to circle sizes*/ .ss-container .ss-medium h3{ margin-top: 82px;} .ss-container .ss-large h3{ margin-top: 133px;} .ss-container .ss-left h3{ border-right: 5px solid rgba(164,166,181,0.8);} .ss-container .ss-right h3{ border-left: 5px solid rgba(164,166,181,0.8);} /*others*/ .ss-container h3 span{ color: rgba(255,255,255,0.8); font-size: 13px;display: block; padding-bottom: 5px;} .ss-container h3 a{ font-size: 28px; color: rgba(255,255,255,0.9);display: block;} .ss-container h3 a:hover{ color: rgba(255,255,255,1);} /*Each circle is going to have a different background image*/ .ss-circle-1{ background-image:url(../images/1.jpg);} .ss-circle-2{ background-image: url(../images/2.jpg);} .ss-circle-3{ background-image: url(../images/3.jpg);} /* and so on... */
3. JQuery
3.1 变量定义
// the row elements var $rows = $('#ss-container > div.ss-row'), // we will cache the inviewport // rows and the outside viewport rows $rowsViewport, $rowsOutViewport, // navigation menu links $links = $('#ss-links > a'), // the window element $win = $(window), // we will store the window sizes here winSize = {}, // used in the scroll setTimeout function anim = false, // page scroll speed scollPageSpeed = 2000 , // page scroll easing scollPageEasing = 'easeInOutExpo', // perspective? hasPerspective = true, perspective = hasPerspective && Modernizr.csstransforms3d,
3.2 初始化
// initialize function init = function() { // get window sizes getWinSize(); // initialize events initEvents(); // define the inviewport selector defineViewport(); // gets the elements that match the previous selector setViewportRows(); // if perspective add css if( perspective ) { $rows.css({ '-webkit-perspective' : 600, '-webkit-perspective-origin' : '50% 0%' }); } // show the pointers for the inviewport rows $rowsViewport.find('a.ss-circle').addClass('ss-circle-deco'); // set positions for each row placeRows(); },
3.3 function部分
/*defines a selector that gathers the row elements that are initially visible. An element is visible if its top is less than the window’s height. These elements will not be affected when scrolling the page*/ defineViewport = function() { $.extend( $.expr[':'], { inviewport : function ( el ) { if ( $(el).offset().top < winSize.height ) { return true; } return false; } }); }, /*checks which rows are initially visible*/ setViewportRows = function() { $rowsViewport = $rows.filter(':inviewport'); $rowsOutViewport = $rows.not( $rowsViewport ) }, /*gets the window width and height*/ getWinSize = function() { winSize.width = $win.width(); winSize.height = $win.height(); },
3.4 初始化event
initEvents = function() { // navigation menu links. // scroll to the respective section. $links.on( 'click.Scrolling', function( event ) { // scroll to the element that has id = menu's href $('html, body').stop().animate({ scrollTop: $( $(this).attr('href') ).offset().top }, scollPageSpeed, scollPageEasing ); return false; }); $(window).on({ // on window resize we need to redefine // which rows are initially visible // (this ones we will not animate). 'resize.Scrolling' : function( event ) { // get the window sizes again getWinSize(); // redefine which rows are initially // visible (:inviewport) setViewportRows(); // remove pointers for every row $rows.find('a.ss-circle').removeClass('ss-circle-deco'); // show inviewport rows and respective pointers $rowsViewport.each( function() { $(this).find('div.ss-left') .css({ left : '0%' }) .end() .find('div.ss-right') .css({ right : '0%' }) .end() .find('a.ss-circle') .addClass('ss-circle-deco'); }); }, // when scrolling the page change // the position of each row 'scroll.Scrolling' : function( event ) { // set a timeout to avoid that the // placeRows function gets called on // every scroll trigger if( anim ) return false; anim = true; setTimeout( function() { placeRows(); anim = false; }, 10 ); } }); },
3.5 sets the position of the rows (left and right row elements). Both of these elements will start with -50% for the left/right (not visible). This value should be 0% (final position) when the element is in the center of the window.
placeRows = function() { // how much we scrolled so far var winscroll = $win.scrollTop(), // the y value for the center of the screen winCenter = winSize.height / 2 + winscroll; // for every row that is not inviewport $rowsOutViewport.each( function(i) { var $row = $(this), // the left side element $rowL = $row.find('div.ss-left'), // the right side element $rowR = $row.find('div.ss-right'), // top value rowT = $row.offset().top; // hide the row if it is under the viewport if( rowT > winSize.height + winscroll ) { if( perspective ) { $rowL.css({ '-webkit-transform' : 'translate3d(-75%, 0, 0) rotateY(-90deg) translate3d(-75%, 0, 0)', 'opacity' : 0 }); $rowR.css({ '-webkit-transform' : 'translate3d(75%, 0, 0) rotateY(90deg) translate3d(75%, 0, 0)', 'opacity' : 0 }); } else { $rowL.css({ left : '-50%' }); $rowR.css({ right : '-50%' }); } } // if not, the row should become visible // (0% of left/right) as it gets closer to // the center of the screen. else { // row's height var rowH = $row.height(), // the value on each scrolling step // will be proporcional to the distance // from the center of the screen to its height factor = ( ( ( rowT + rowH / 2 ) - winCenter ) / ( winSize.height / 2 + rowH / 2 ) ), // value for the left / right of each side of the row. // 0% is the limit val = Math.max( factor * 50, 0 ); if( val <= 0 ) { // when 0% is reached show the pointer for that row if( !$row.data('pointer') ) { $row.data( 'pointer', true ); $row.find('.ss-circle').addClass('ss-circle-deco'); } } else { // the pointer should not be shown if( $row.data('pointer') ) { $row.data( 'pointer', false ); $row.find('.ss-circle').removeClass('ss-circle-deco'); } } // set calculated values if( perspective ) { var t = Math.max( factor * 75, 0 ), r = Math.max( factor * 90, 0 ), o = Math.min( Math.abs( factor - 1 ), 1 ); $rowL.css({ '-webkit-transform' : 'translate3d(-' + t + '%, 0, 0) rotateY(-' + r + 'deg) translate3d(-' + t + '%, 0, 0)', 'opacity' : o }); $rowR.css({ '-webkit-transform' : 'translate3d(' + t + '%, 0, 0) rotateY(' + r + 'deg) translate3d(' + t + '%, 0, 0)', 'opacity' : o }); } else { $rowL.css({ left : - val + '%' }); $rowR.css({ right : - val + '%' }); } } }); }; return { init : init };
二、 Technotarek - timeliner
项目地址： https://github.com/technotarek/timeliner
应用网站：
1、HTML结构
<div id="timelineContainer" class="timelineContainer"> <div class="timelineMajor"> <h2 class="timelineMajorMarker">Major Marker</h2><!-- marker -->
<dl class="timelineMinor">
<!--Separate the individual events (e.g., content for each century, year, decade etc) into elements--> <dt id="event01"><a>Event</a></dt> <dd class="timelineEvent" id="event01EX" style="display: none; "> <p>Content about the event goes here.</p> </dd><!-- /.timelineEvent --> </dl><!-- /.timelineMinor --> <dl class="timelineMinor"> <dt id="event02"><a>Another Event</a></dt> <dd class="timelineEvent" id="event02EX" style="display: none; "> <p>Content about the other event.</p> </dd><!-- /.timelineEvent --> </dl><!-- /.timelineMinor --> </div><!-- /.timelineMajor --> </div><!-- /#timelineContainer -->
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引人screen.css和timeliner.js (or timeliner.min.js).
div id="timelineContainer" class="timelineContainer"> ... </div> 内容<div class="timelineMajor">-
将event包裹在DT和A标签中，并赋予唯一的id号：
<dt id="19540517"><a>Brown vs Board of Education</a></dt> -
每个event包裹在隐藏（display为'none'）的DD标签中，其类名为 'timeline', id以EX结尾
<dd class="timelineEvent" id="19540517EX" style="display: none;"> ... </dd> -
实例化:
$.timeliner(); -
实例化多个timeline:
$.timeliner({timelineContainer: '#timelineContainer_1'}); $.timeliner({timelineContainer: '#timelineContainer_2'}); -
实例化参数:
$.timeliner({ timelineContainer: '#timelineContainer', // value: selector of the main element holding the timeline's content, default to #timelineContainer startState: 'closed', // value: closed | open, default to closed; determines whether the timeline is initially collapsed or fully expanded startOpen: [], // value: array of IDs of single timelineEvents, default to empty; determines the minor event that you want to display open by default on page load baseSpeed: 200, // value: any integer, default to 200; determines the base speed, some animations are a multiple (4x) of the base speed speed: 4, // value: numeric, defalut to 4; a multiplier applied to the base speed that sets the speed at which an event's conents are displayed and hidden fontOpen: '1.2em', // value: any valid CSS font-size value, defaults to 1em; sets the font size of an event after it is opened fontClosed: '1em', // value: any valid CSS font-size value, defaults to 1em; sets the font size of an event after it is closed expandAllText: '+ expand all', // value: string; defaults to '+ expand all' collapseAllText: '- collapse all' // value: string; defaults to '- collapse all' });
- id以Ex结尾，如['#event01EX'] 或['#event01EX','#event02EX']， 表明该timeline event默认是打开状态，见 http://www.technotarek.com/timeliner/timeliner.htm
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加入expandAll选项:
<div class="timelineToggle"><p><a class="expandAll">+ expand all</a></p></div>
