JavaScript仿腾讯新闻年份事件滑动效果代码

发布时间：2018-08-17 13:12:04 所属栏目：交互来源：站长网

导读：Java Script 仿腾讯新闻年份事件滑动效果，具体请看代码吧，里面的注释很丰富，效果也不错。现在在腾讯新闻专题页面还可见到此效果。演示： !DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transi

　　JavaScript 仿腾讯新闻年份事件滑动效果，具体请看代码吧，里面的注释很丰富，效果也不错。现在在腾讯新闻专题页面还可见到此效果。

　　演示：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>仿腾讯新闻年份事件滑动效果</title> <meta http-equiv="content-type" content="text/html;charset=gb2312"> <style type="text/css"> #itimeslide{position:relative;margin:0 20px;padding:15px 0} #itimeslide #date{display:none;position:absolute;left:74px;top:3px;width:70px} #itimeslide #date span{display:block;height:14px;padding:0 3px;background:#4e7db3;color:#fff;font-size:12px;line-height:14px} #itimeslide #date em{display:block;width:5px;height:3px;margin:0 auto;background:url(/uploads/allimg/1104/sprite.gif) no-repeat -61px 0} #itimeslide #timeline{overflow:visible;width:100%;height:2px;margin:16px 0 20px;background:#c7c7c7} #itimeslide #timeline li{display:block;position:absolute;left:0;top:24px;width:17px;height:17px;background:url(/uploads/allimg/1104/sprite.gif) no-repeat 0 0;text-indent:-999px;cursor:pointer} #itimeslide #timeline li.hover{background-position:-20px 0} #itimeslide span#titletop{display:none;position:absolute;top:45px;width:12px;height:8px;background:url(/uploads/allimg/1104/sprite.gif) no-repeat -88px -21px;z-index:1} #itimeslide #title{display:none;position:absolute;top:52px;padding:15px 10px;background:#f8f8ff;border:1px solid #708bab;border-radius:5px;-weblit-border-radius:5px;-moz-border-radius:5px;-webkit-box-shadow:3px 3px 3px #c7c7c7; -moz-box-shadow:3px 3px 3px #c7c7c7} </style> <script language="javascript"> var JSONData=[ {'date':'2010-12-25','title':'烈火下载','href':''}, {'date':'2010-11-01','title':'前台制作与脚本专栏','href':'http://bbs.blueidea.com'}, {'date':'2010-10-22','title':'纯CSS实现列表鼠标划过变色','href':'http://bbs.blueidea.com'}, {'date':'2010-09-23','title':'实现checkbox的全选/全不选','href':'http://bbs.blueidea.com'}, {'date':'2010-09-05','title':'JS<b>计时器</b>setTimeout()与setInterval()方法的区别','href':'http://bbs.blueidea.com'}, {'date':'2010-06-07','title':'加载xml文档的函数(原生JavaScript版及<b>jQuery</b>版)','href':'http://bbs.blueidea.com'}, {'date':'2010-05-09','title':'限制字符输入数功能(jQ版和原生JS版)','href':'http://bbs.blueidea.com'}, {'date':'2010-04-13','title':'奇或偶数行高亮显示及鼠标划过高亮显示类','href':'http://bbs.blueidea.com'}, {'date':'2010-03-01','title':'结构/表现/行为完全分离的选项卡(jQ版和原生JS版)','href':'http://bbs.blueidea.com'}, {'date':'2010-02-22','title':'简易的点击展开/关闭效果(原生JS版和JQ版)','href':'http://bbs.blueidea.com'}, {'date':'2010-02-01','title':'网站基本优化：php的gzip压缩方法','href':'http://bbs.blueidea.com'}, {'date':'2010-01-20','title':'基于jQuery的渐隐渐显图片轮换幻灯片','href':'http://bbs.blueidea.com'} ]; function iTimePoint(iTimeSlideId, dateId, timeLineId, titleTop, titleId, defaultShow){ /* 传入参数说明: * iTimeSlideId: 外围ID名. 本样例DOM中#itimeslide; * dateId: 日期ID名. 本样例DOM中#date; * timeLineId: 时间点分布ID名. 本样例DOM中#timeline; * titleTop: 标题容器上方小三角ID名. 本样例DOM中#titletop; * titleId: 标题容器ID名. 本样例DOM中#title; * defaultShow: 设定初始显示的时间点, 默认为0, 可不传值 */ //参数判断, 测试用, 成功运行后可删除 if (arguments.length < 5 || arguments.length>6) { alert('参数传入错误,请传入5或6个值! :)'); return false; } //通用方法 var iBase = { //document.getElementById Id: function(name){ return document.getElementById(name); }, //时间点动画显示 PointSlide: function(elem, val){ //可通过修改i+=5中的5控制滑动速度 for (var i = 0; i <= 100; i += 5) { (function(){ //这个pos定义很重要, 若直接使用闭包获取到的不是上面的i var pos = i; //平滑移动 setTimeout(function(){ elem.style.left = pos * val / 100 + 'px'; }, (pos + 1) * 10); })(); } }, //为元素添加样式 AddClass: function(elem, val){ //若元素无class, 直接赋值 if (!elem.className) { elem.className = val; }else { //否则通过添加空格新增一个class var oVal = elem.className; oVal += ' '; oVal += val; elem.className = val; } }, //获取元素索引 Index: function(cur, obj){ for (var i = 0; i < obj.length; i++) { if (obj[i] == cur) { return i; } } } } //整个函数变量定义区 var dataLen = JSONData.length; var iTimeSilde = iBase.Id(iTimeSlideId); var date = iBase.Id(dateId); var timeLine = iBase.Id(timeLineId); var titletop = iBase.Id(titleTop); var title = iBase.Id(titleId); var iTimeSildeW = iTimeSilde.offsetWidth;//幻灯区实际宽度 var timePoint = document.createElement('ul');//用来存储时间点的ul var timePointLeft = null;//时间点相对于父元素左边距离 var timePointLeftCur = null;//每两个时间点间距 var pointIndex = 0;//时间点在队列中的索引值 var defaultShow = defaultShow || 0;//默认显示的时间 var clearFun=null;//当用户无意识的划过时中止执行 var that=null; //根据数据条数生成对应的时间点html for (var i = 0; i < dataLen; i++) { timePoint.innerHTML += '<li></li>'; } //将时间点插入到时间线DIV中 timeLine.appendChild(timePoint) var timePoints = timeLine.getElementsByTagName('li'); //时间点平滑显示 for (var i = 0; i < timePoints.length; i++) { //每两个时间点间间距 timePointLeftCur = parseInt(iTimeSildeW / (dataLen + 1)); //计算对应时间点左边距 timePointLeft = (i + 1) * timePointLeftCur; //时间点动画形式初始化 iBase.PointSlide(timePoints[i], timePointLeft); //初始显示时间点 setTimeout(function(){ timePoints[defaultShow].onmouseover(); }, 1200); //获取时间点默认class值, 为鼠标事件做准备 timePoints[i].oldClassName = timePoints[i].className; timePoints[i].onmouseover = function(){ that = this;//确保clearFun中的this是当前的this //提升用户体验, 当用户无意识地划过时不执行函数 clearFun=setTimeout(function(){ pointIndex = iBase.Index(that, timePoints); //计算出当前时间点索引值, 为鼠标划出做准备 //为当前时间点加载高亮样式 iBase.AddClass(that, 'hover'); //切换日期及标题值 date.innerHTML = '<span>' + (JSONData[pointIndex]['date'] || '') + '</span><em></em>'; title.innerHTML = '<a href="' + (JSONData[pointIndex]['href'] || '') + '">' + (JSONData[pointIndex]['title'] || '') + '</a>'; //改变日期及标题的位置, 此处减去的数字, 可根据实际样式调整 date.style.left = ((pointIndex + 1) * timePointLeftCur - 25) + 'px'; titletop.style.left = ((pointIndex + 1) * timePointLeftCur + 6) + 'px'; //当标题框左边距与标题框宽度之和大于外围宽度时, 以右边为绝对点 if ((title.offsetWidth + (pointIndex + 1) * timePointLeftCur) < iTimeSildeW) { title.style.left = ((pointIndex + 1) * timePointLeftCur - timePointLeftCur) + 'px'; }else { title.style.left = (iTimeSildeW - title.offsetWidth) + 'px'; } //显示日期/时间点/标题 date.style.display = 'block'; titletop.style.display = 'block'; title.style.display = 'block'; },200);//200为认定无意识划过的时间, 可自行调节 } timePoints[i].onmouseout = function(){ //若停留时间低于200ms, 认定为无意识划过, 中止函数 clearTimeout(clearFun); //鼠标划出时, 保留最后一个鼠标划过的高亮样式 for (var m = 0; m < timePoints.length; m++) { if (m != pointIndex) { timePoints[m].className = timePoints[m].oldClassName } } } } } //样例加载该函数 window.onload = function(){ iTimePoint('itimeslide', 'date', 'timeline', 'titletop','title'); } </script> </head> <body> <div id="demo"> <div id="itimeslide"> <div id="date"></div> <div id="timeline"></div> <span id="titletop"></span> <div id="title"></div> </div> </div> </body> </html><br /><center>如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></center>
提示：可修改后代码再运行!

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