jquery实现简单实用的轮播器

2019-11-19 16:31:03

字体：大中小

来源：转载

供稿：网友

WEB开发经常实用到一种情况，即某个容器内的各项轮流循环播放显示，同时有相应的导航条提示，因为这个在很多地方可以使用，而且功能很相似的，所以写一个这样的播放功能，共享一下，需要注意的是这个需要jQuery的支持, 这个自己网上搜索下载即可，下面总结出来如下，直接看代码，

一、把如下保存为一个独立的文件 itemPlayerApp.js ：

//attend: this need jQuery.js support var itemPlayerApp={  author:'shenzhenNBA',  version:'v1.0',  appMaxNum:0,  playData:'1xplay',  playerID:"",  speed:3000,  appPlay:function(){    var f=this.playData.toLowerCase().split('x');   if(f[1]=='play'){    var i;    try{i=parseInt(f[0]);}catch(e){i=0;}    if(i>=this.appMaxNum){i=0;}       this.appTab(i);      this.playData=(++i)+"xplay";   }    },  appTab:function(tabIndex){   var k,j;   try{k=parseInt(tabIndex);}catch(e){k=0;}     for(j=0;j<this.appMaxNum;j++){       if(k==j){         $('#itemNav'+j).css({'background-color':'#333333','color':'#FFFFFF'});        $('#item'+j).show('fast');       }else{      $('#itemNav'+j).css({'background-color':'#CCCCCC','color':'#000000'});    $('#item'+j).hide('fast');     }   }    },  appActive:function(){   var _this = this;   this.playerID = setInterval(function(){ _this.appPlay(); },this.speed);  },  init:function(refContainerId,intervalTime,refWidth,refHeight){    var cid = "";    var w = 300;   var h = 200;   if(refContainerId == 'undefined' || refContainerId == null || refContainerId == ''){    return;   }else{    cid = $.trim(refContainerId);   }    if(refWidth == 'undefined' || refWidth == null || refWidth == ''){    w = 300;   }else{    w = parseInt(refWidth);   }    if(refHeight == 'undefined' || refHeight == null || refHeight == ''){    h = 200;   }else{    h = parseInt(refHeight);   }       $('#' + cid).css({"position":"relative",'width':w,'height':h,'overflow':'hidden'});   $('#' + cid + "NavCon").css({'color':'#333333','height':'26px','position':'absolute','width':'95%','left':'0','bottom':'3px','text-align':'right','display':'block'});   var t = 0;   if(intervalTime == 'undefined' || intervalTime == null){    t = 3000;   }else{    try{ t = parseInt(intervalTime);}catch(e){ t = 3000;}   }   this.speed = t;   var navList = "#" + cid + "NavCon a";   this.appMaxNum = $(navList).size();   if(0 == this.appMaxNum){ return; }   var _this = this;   $(navList).each(function(i){    $(this).css({'padding':'2px 5px','margin-right':'2px','background-color':'#CCCCCC'});    if(i == 0){     $(this).css({'background-color':'#333333','color':'#FFFFFF'});    }        $(this).mouseover(function(){    _this.playData=i+'xstop';    _this.appTab(i);     });    $(this).mouseout(function(){    _this.playData=i+'xplay';    _this.appTab(i);    });   });  } };

二、如何使用：

1.需要使用的web页面中引入jQery文件和本 itemPlayerApp.js 文件，例如:

2.建立如下格式的HTML文件

<div id="containerID"><div id="containerIDNavCon"><a id="itemNav0" class="item1" href="#">1</a><a id="itemNav1" class="item1" href="#">2</a><a id="itemNav2" class="item1" href="#">3</a></div><div id="containerIDItemCon"><a id="item0" href="#"><img src="img/pic0.jpg" width="300" height="200"></a><a id="item1" href="#"><img src="img/pic1.jpg" width="300" height="200"></a><a id="item2" href="#"><img src="img/pic2.jpg" width="300" height="200"></a></div></div>

注意：因为尽量简单，所以需要建立适当格式的HTML,主要要求如下，注意颜色部分，

//A, id = containerIDNavCon和 id = containerIDItemCon 中的连接 A 元素的数量应该相等；
//B, 导航容器的 ID 构成应为主容器 ID 加上 NavCon，如上 containerIDNavCon；
//C, 导航容器中的每个 A 元素的 ID 构成为，itemNav 加上以0开始的递增数字序列，如上面的绿色部分；
//D, 显示项目容器内的每个 A 元素的 ID 构成为，item 加上以0开始的递增数字序列，如上面的紫色部分；

3.在WEB页面中的加载事件onload，初始化和启用该轮播功能，例如:
window.onload=function(){
itemPlayerApp.init('containerID',3000,300,200);
itemPlayerApp.active();
}

三、如下一个例子

假如所有文件都放在一个文件夹里，

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>TEST</title> <script language="javascript" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script> <script language="javascript" type="text/javascript" src="itemPlayerApp.js"></script> <style type="text/css"> *{font-family:"宋体",verdana,arial; font-size:12px;color:#000000;} #playerBox{font-family:"宋体",verdana,arial; font-size:12px;color:#000000;} </style> </head> <body> <div id="playerBox" class="columnLeft01 box02"> <div id="playerBoxNavCon"> <a id="itemNav0" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >1</a> <a id="itemNav1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >2</a> <a id="itemNav2" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >3</a> </div> <div id="playerBoxItemCon"> <a id="item0" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><img src="http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif" width="100%" height="200" border="0"></a> <a id="item1" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><img src="http://csdnimg.cn/www/images/csdnindex_logo.gif" width="100%" height="200" border="0"></a> <a id="item2" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><img src="http://avatar.csdn.net/5/1/9/1_shenzhennba.jpg" width="100%" height="200" border="0"></a> </div> </div> <p> </p> <p>项目循环轮播功能</p> <script language="javascript" type="text/javascript"> window.onload=function(){ itemPlayerApp.init('playerBox',3000,300,200); itemPlayerApp.appActive(); } </script> </body> </html>

提示: jQuery.js 的文件请网上自己下载。
在使用到的时候直接使用即可。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持武林网。

上一篇：最常用的jQuery表单验证(简单)

下一篇：vue.js 左侧二级菜单显示与隐藏切换的实例代码