jQuery实现新闻播报滚动及淡入淡出效果示例
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2022-04-21 08:40:18
本文实例讲述了jquery实现新闻播报滚动及淡入淡出效果。分享给大家供大家参考,具体如下:
下面是上下滚动源码
本文实例讲述了jquery实现新闻播报滚动及淡入淡出效果。分享给大家供大家参考,具体如下:
下面是上下滚动源码
<!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> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <title>www.jb51.net 向上滚动代码带上下翻按钮滚动特效</title> <style type="text/css"> body{ color:#333; font-size:13px;} h3,ul,li{margin:0;padding:0; list-style:none;} .scrollbox{ width: 340px; margin: 0 auto; overflow: hidden; border: 1px solid #cfcfcf; padding: 10px; } #scrolldiv{width:340px;height:359px; overflow:hidden;}/*这里的高度和超出隐藏是必须的*/ #scrolldiv li{max-height:90px; width:300px; padding:0 20px;background:url(ico-4.gif) no-repeat 10px 23px; overflow:hidden; vertical-align:bottom; zoom:1; border-bottom:#b7b7b7 dashed 1px;} #scrolldiv li h3{ height:24px; padding-top:13px; font-size:14px; color:#353535; line-height:24px; width:300px;} #scrolldiv li h3 a{color:#353535; text-decoration:none}#scrolldiv li h3 a:hover{ color:#f00} #scrolldiv li div{ height:36px; width:300px; color:#416a7f; line-height:18px; overflow:hidden} #scrolldiv li div a{ color:#416a7f; text-decoration:none} .scroltit{ height:26px; line-height:26px; padding-bottom:4px; margin-bottom:4px;} .scroltit h3{ width:100px; float:left;} .scroltit .updown{float:right; width:32px; height:22px; margin-left:4px} #but_up{ background:url(up.gif) no-repeat 0 0; text-indent:-9999px} #but_down{ background:url(down.gif) no-repeat 0 0; text-indent:-9999px} #n{margin:10px auto; width:920px; border:1px solid #ccc;font-size:12px; line-height:30px;} #n a{ padding:0 4px; color:#333} .test{ margin-top: 50px; background: #cccccc; border: .5px solid #ddd; overflow: hidden; height: 44px; width: 100px; } .test li{ height: 44px; width: 100%; float: left; line-height: 44px; font-size: 18px; border-top: .5px solid #ddd; } </style> <script src="jquery-1.4.4.min.js" type="text/javascript"></script> <script src="jq_scroll.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function(){ $("#scrolldiv").scroll({line:1,speed:500,timer:2000,up:"but_up",down:"but_down"}); (function(){ var lineh = $(".test").find("li:first").height(); var appendto = function(){ $(".test").find("li:first").appendto($(".test")); $(".test ul").css("margintop", 0); }; var animate = function(){ $(".test ul").eq(0).animate({ margintop: -lineh },500,appendto) }; var delayer = setinterval(animate, 2000); })() }); </script> </head> <body> <p align="center"><strong>特效效果如下:</strong></p> <p> </p> <div class="scrollbox"> <div id="scrolldiv"> <ul> <li><h3><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="linktit">移动娱乐业务突飞</a></h3></li> <li><h3><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="linktit">不停转动向上滚动可控制向上向下滚动特效</a></h3> <div>div css js自动不断向上一个一个滚动可控制向上向下滚动特效... </div></li> <li><h3><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="linktit">全国涂料总产量呈现直线下滑态势</a></h3> <div>我国涂料工业将面临涂料消费税征收全面铺开,环保压力持续增加,2015年的形势不容乐观... </div></li> <li><h3><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="linktit">镂空渔网超吸睛</a></h3> <div>镂空罩衫,短短的版型穿起来显高又俏皮,内搭长款连衣裙,非常大方哦... </div></li> <li><h3><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="linktit">主题创业街亮相</a></h3> <div>目前已有包括咖啡厅、酒吧、餐厅、瑜伽室在内的8家商铺入驻该火车... </div></li> </ul> </div> <div class="scroltit"><div class="updown" id="but_down">向上</div><div class="updown" id="but_up">向下</div></div> </div> <div class="test"> <ul> <li>sections1</li> <li>sections2</li> <li>sections3</li> <li>sections4</li> </ul> </div> </body> </html>
下面是jq插件源码
/* jq向上滚动带上下翻页按钮 */ (function($){ $.fn.extend({ scroll:function(opt,callback){ //参数初始化 if(!opt) var opt={}; var _btnup = $("#"+ opt.up);//shawphy:向上按钮 var _btndown = $("#"+ opt.down);//shawphy:向下按钮 var timerid; var _this=this.eq(0).find("ul:first"); var lineh=_this.find("li:first").height(), //获取行高,此处行高固定但是当文字伟一行或者两行时,要动态获取吧?? line=opt.line?parseint(opt.line,10):parseint(this.height()/lineh,10), //每次滚动的行数,默认为一屏,即父容器高度 speed=opt.speed?parseint(opt.speed,10):500; //卷动速度,数值越大,速度越慢(毫秒) timer=opt.timer //?parseint(opt.timer,10):3000; //滚动的时间间隔(毫秒) if(line==0) line=1; var upheight=0-line*lineh; //滚动函数 var scrollup=function(){ _btnup.unbind("click",scrollup); //shawphy:取消向上按钮的函数绑定 _this.animate({ //当滚动的元素height为max-height时,实时获取元素height margintop:-_this.find("li:first").height() },speed,function(){ // for(i=1;i<=line;i++){ // _this.find("li:first").appendto(_this); // } _this.find("li:first").appendto(_this); _this.css({margintop:0}); _btnup.bind("click",scrollup); //shawphy:绑定向上按钮的点击事件 }); } //shawphy:向下翻页函数 var scrolldown=function(){ _btndown.unbind("click",scrolldown); for(i=1;i<=line;i++){ _this.find("li:last").show().prependto(_this); } _this.css({margintop:-_this.find("li:first").height()}); _this.animate({ margintop:0 },speed,function(){ _btndown.bind("click",scrolldown); }); } //shawphy:自动播放 var autoplay = function(){ if(timer)timerid = window.setinterval(scrollup,timer); }; var autostop = function(){ if(timer)window.clearinterval(timerid); }; //鼠标事件绑定 _this.hover(autostop,autoplay).mouseout(); _btnup.css("cursor","pointer").click( scrollup ).hover(autostop,autoplay);//shawphy:向上向下鼠标事件绑定 _btndown.css("cursor","pointer").click( scrolldown ).hover(autostop,autoplay); } }) })(jquery);
另外再贴一份,删改之后的脚本
/* jq向上滚动带上下翻页按钮 */ (function($){ $.fn.extend({ txtscroll:function(opt,callback){ //参数初始化 if(!opt) var opt={}; var _btnup = $("#"+ opt.up);//shawphy:向上按钮 var _btndown = $("#"+ opt.down);//shawphy:向下按钮 var timerid; var _this=this.eq(0).find("ul:first"); speed=opt.speed?parseint(opt.speed,10):500; //卷动速度,数值越大,速度越慢(毫秒) timer=opt.timer?parseint(opt.timer,10):2000; //滚动的时间间隔(毫秒) //滚动函数 var scrollup=function(){ _btnup.unbind("click",scrollup); //shawphy:取消向上按钮的函数绑定 _this.animate({ //当滚动的元素height为max-height时,实时获取元素height margintop: -_this.find("li:first").height() },speed,function(){ _this.find("li:first").appendto(_this); _this.css({"margintop":0}); _btnup.bind("click",scrollup); //shawphy:绑定向上按钮的点击事件 }); } //shawphy:向下翻页函数 var scrolldown=function(){ _btndown.unbind("click",scrolldown); _this.find("li:last").show().prependto(_this); _this.css({margintop:-_this.find("li:first").height()}); _this.animate({ margintop:0 },speed,function(){ _btndown.bind("click",scrolldown); }); } //shawphy:自动播放 var autoplay = function(){ if(timer) setintervalt = window.setinterval(scrollup,timer); }; var autostop = function(){ if(timer)window.clearinterval(setintervalt); }; //鼠标事件绑定 _this.hover(autostop,autoplay).mouseout(); _btnup.css("cursor","pointer").click( scrollup ).hover(autostop,autoplay);//shawphy:向上向下鼠标事件绑定 _btndown.css("cursor","pointer").click( scrolldown ).hover(autostop,autoplay); } }) })(jquery);
运行效果如下:
更多关于jquery相关内容感兴趣的读者可查看本站专题:《jquery常用插件及用法总结》、《jquery扩展技巧总结》、《jquery拖拽特效与技巧总结》、《jquery常见经典特效汇总》、《jquery动画与特效用法总结》及《jquery选择器用法总结》
希望本文所述对大家jquery程序设计有所帮助。
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