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jQuery实现经典的网页3D轮播图封装功能【附源码下载】

2019-11-19 12:08:30
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本文实例讲述了jQuery实现的网页3D轮播图封装功能。分享给大家供大家参考,具体如下:

网页伪3D轮播图,其实就是轮播图旋转木马效果。其实在jquery插件库也有很多旋转木马的插件,但是博主封装的这个新的插件比起以上的都适应性更好。其适应性好表现在:调用灵活性高用法更简单,css样式都封装好了基本不用写,在body里面写ul>li>img标签即可,可设置参数多,甚至不同图片的大小都可以自适应轮播,各个浏览器兼容性好(包括IE,虽然我没测过IE8以下浏览器,不过IE8以上都没问题),好了,以下看代码和用法。

head引入两个文件,第一个是jquery的插件(这是1.11.0版本,当然其他版本也可以哦,不过低版本的相对IE兼容性更好),第二个是我封装好的javascript脚本

<script src="js/jquery-1.11.0.js" type="text/javascript" charset="utf-8"></script><script src="js/Figure_3D.js" type="text/javascript" charset="utf-8"></script>

body里面插入轮播图,ul的id要为pic_play,当然我这里是7张图,你也可以增加减少图片,但是这里有一个重要问题是,图片数量要为单数,不能为偶数,否则会出问题,这是一个小小的bug。当然你也可以在li里面写<a><img src/></a>也是可以的。

<ul id="pic_play">  <li><img src="img/dc1.jpg"/></li>  <li><img src="img/dc2.jpg"/></li>  <li><img src="img/dc3.jpg"/></li>  <li><img src="img/dc4.jpg"/></li>  <li><img src="img/dc5.jpg"/></li>  <li><img src="img/dc6.jpg"/></li>  <li><img src="img/dc7.jpg"/></li></ul>

css基本不用写,不过要习惯性给padding和margin归0

*{  margin: 0;  padding: 0;  list-style: none;}

重要封装脚本Figure_3D.js

//    ulwidth:父节点ul总宽度(number),//    height:ul和图片的初始化最大高度(中间)(number),//    liwidth:图片的初始化最大宽度(中间)(number),//    minopacity:图片最小透明度(0~1),//    minscale:图片最小缩放系数(0~1),//    direction:默认轮播方向("left","right"),//    speed:动画速度(number),//    delayed:每张图片延时停留时间(number)(注:delayed>=speed),//    mousestop:鼠标经过是否停止(false,true),function init(ulwidth,height,liwidth,minopacity,minscale,direction,speed,delayed,mousestop){  $("#pic_play").css({"position":"relative","width":ulwidth,"height":height});  $("#pic_play>li").css({"position":"absolute","width":liwidth,"height":height});  if($("#pic_play>li>a").size()>0){    $("#pic_play>li>a").css("display","block");  }  if($("#pic_play>li>a>img").size()>0){    $("#pic_play>li>a>img").css({"display":"block","width":"100%","height":"100%"});  }else if($("#pic_play>li>img").size()>0){    $("#pic_play>li>img").css({"display":"block","width":"100%","height":"100%"});  }else return;  var len=$("#pic_play>li").size();  jsonstyle=[];  var display=-1;  var minopacity=minopacity;  var opacitystep=(1-minopacity)/(Math.floor(len/2)-1);  var minscale=minscale;  var scalestep=(1-minscale)/(Math.floor(len/2));  var Dvalue=Math.round((($("#pic_play").innerWidth()-$("#pic_play>li").eq(0).outerWidth())/2)/Math.floor(len/2));  $("#pic_play>li").each(function(i){    if(i<Math.floor(len/2)){      var realoff=i*Dvalue;      display++;      var realwidth=Math.round(minscale*$("#pic_play>li").eq(i).outerWidth());      var realheight=Math.round(minscale*$("#pic_play>li").eq(i).outerHeight());      var realtop=Math.round(($("#pic_play>li").eq(Math.floor(len/2)).outerHeight()-realheight)/2);      jsonstyle[i]={"realOff":realoff,"realIndex":display,"realOpacity":minopacity,"realWidth":realwidth,"realHeight":realheight,"realTop":realtop};      $("#pic_play>li").eq(i).css({"left":realoff,"z-index":display,"opacity":minopacity,"width":realwidth,"height":realheight,"top":realtop});      minopacity+=opacitystep;      if(minopacity>=1){        minopacity=1.0;      }      minscale+=scalestep;    }else if(i==Math.floor(len/2)){      display++      var realwidth=Math.round(minscale*$("#pic_play>li").eq(i).outerWidth());      var realheight=Math.round(minscale*$("#pic_play>li").eq(i).outerHeight());  var realoff=Math.round(($("#pic_play").innerWidth()-$("#pic_play>li").eq(i).outerWidth())/2);      jsonstyle[i]={"realOff":realoff,"realIndex":display,"realOpacity":1,"realWidth":realwidth,"realHeight":realheight,"realTop":0};      $("#pic_play>li").eq(i).css({"left":realoff,"z-index":display,"opacity":1,"width":realwidth,"height":realheight,"top":0});    }else{      display--;      minscale-=scalestep;      var realwidth=Math.round(minscale*$("#pic_play>li").eq(i).outerWidth());      var realheight=Math.round(minscale*$("#pic_play>li").eq(i).outerHeight());      var realoff=Math.round($("#pic_play").innerWidth()-(realwidth+(len-1-i)*Dvalue));      var realtop=Math.round(($("#pic_play>li").eq(Math.floor(len/2)).outerHeight()-realheight)/2);      jsonstyle[i]={"realOff":realoff,"realIndex":display,"realOpacity":minopacity,"realWidth":realwidth,"realHeight":realheight,"realTop":realtop};      $("#pic_play>li").eq(i).css({"left":realoff,"z-index":display,"opacity":minopacity,"width":realwidth,"height":realheight,"top":realtop});      minopacity-=opacitystep;    }  });  animationPlay(direction,speed,delayed);  if(mousestop==true){    animationStop(direction,speed,delayed);  }}//offset:左右按钮分别距离ul左右边距(number),//top:左右按钮距离ul上边距(number),//direction:默认轮播方向("left","right"),一般和init里的一样,如果你不想点击后改变运动方向,//speed:动画速度(number),一般和init里的一样,如果你不想点击后改变动画速度,//delayed:每张图片延时停留时间(number)(注:delayed>=speed),一般和init里的一样,如果你不想点击后改变延时停留时间,function btn(offset,top,direction,speed,deleyed){  var leftbtn=$("<span></span>");  leftbtn.css({"width":32,"height":32,"display":"inline-block","position":"absolute","left":offset,"top":top,"background":"url(img/slider-arrow.png) no-repeat -100px 0","cursor":"pointer","z-index":100});  var rightbtn=$("<span></span>");  rightbtn.css({"width":32,"height":32,"display":"inline-block","position":"absolute","right":offset,"top":top,"background":"url(img/slider-arrow.png) no-repeat 0 0","cursor":"pointer","z-index":100});  $("#pic_play").append(leftbtn);  $("#pic_play").append(rightbtn);  leftbtn.hover(function(){    $(this).css("background-position","-160px 0");  },function(){    $(this).css("background-position","-100px 0");  });  rightbtn.hover(function(){    $(this).css("background-position","-60px 0");  },function(){    $(this).css("background-position","0 0");  });  leftbtn.click(function(){    clearInterval(timeplay);    $("#pic_play>li").stop(true);    var li=$("#pic_play>li").first();    $("#pic_play").append(li);    $("#pic_play>li").each(function(list){      $("#pic_play>li").eq(list).css("z-index",jsonstyle[list]["realIndex"]).animate({"left":jsonstyle[list]["realOff"],"opacity":jsonstyle[list]["realOpacity"],"width":jsonstyle[list]["realWidth"],"height":jsonstyle[list]["realHeight"],"top":jsonstyle[list]["realTop"]},speed);    });    animationPlay(direction,speed,deleyed);  });  rightbtn.click(function(){    clearInterval(timeplay);    $("#pic_play>li").stop(true);    var li=$("#pic_play>li").last();    $("#pic_play").prepend(li);    $("#pic_play>li").each(function(list){      $("#pic_play>li").eq(list).css("z-index",jsonstyle[list]["realIndex"]).animate({"left":jsonstyle[list]["realOff"],"opacity":jsonstyle[list]["realOpacity"],"width":jsonstyle[list]["realWidth"],"height":jsonstyle[list]["realHeight"],"top":jsonstyle[list]["realTop"]},speed);    });    animationPlay(direction,speed,deleyed);  });}//JSON动画function animationPlay(direction,speed,deleyed){  timeplay=setInterval(function(){    if(direction.toLowerCase()=="left"){      var li=$("#pic_play>li").first();      $("#pic_play").append(li);    }else if(direction.toLowerCase()=="right"){      var li=$("#pic_play>li").last();      $("#pic_play").prepend(li);    }else return;    $("#pic_play>li").each(function(list){      $("#pic_play>li").eq(list).css("z-index",jsonstyle[list]["realIndex"]).animate({"left":jsonstyle[list]["realOff"],"opacity":jsonstyle[list]["realOpacity"],"width":jsonstyle[list]["realWidth"],"height":jsonstyle[list]["realHeight"],"top":jsonstyle[list]["realTop"]},speed);    });  },deleyed);}function animationStop(direction,speed,delayed){  $("#pic_play").mouseenter(function(){    clearInterval(timeplay);  });  $("#pic_play").mouseleave(function(){    animationPlay(direction,speed,delayed)  });}

脚本的调用方法,调用一个init函数初始化,定义的参数意义是:自定父节点ul总宽度(number),自定ul和图片的初始化最大高度(中间那图)(number),图片的初始化最大宽度(中间那图)(number),图片最小透明度(0~1),图片最小缩放系数(0~1),默认轮播方向("left","right"),动画速度ms(number),轮播图片延时停留时间ms(number)(注:这个参数必须大于动画速度),鼠标经过是否停止(false,true)。

$(function(){  init(1300,600,600,0.7,0.5,"right",500,3000,false);});

为了运行效果更为显眼,给ul加个边框居中吧。

#pic_play{  position: relative;  border: 1px solid black;  margin: 30px auto;}

看以下运行效果:这里其实每张图的大小都不一样啊,都可以自适应轮播了

大家会发现没有左右切换的按钮?没关系,我们可以调用btn()函数。btn里面的参数意义分别是:左右按钮分别距离ul左右边距(number),左右按钮距离ul上边距(number),默认轮播方向("left","right")一般和init里的一样如果你不想点击后改变运动方向,动画速度ms(number)一般和init里的一样如果你不想点击后改变动画速度,每张图片延时停留时间ms(number)(注:这个参数必须大于动画速度)一般和init里的一样如果你不想点击后改轮播停留时间。

$(function(){  init(1000,460,460,0.7,0.5,"right",500,3000,false);  btn(40,230,"right",500,3000);});

下面来看效果:

如果想用自己的按钮款式,可以直接在我的btn封装函数里面换啊。

附:这里给出了一个完整测试实例(图片替换成了养眼的美女图片),可点击此处本站下载

更多关于jQuery相关内容感兴趣的读者可查看本站专题:《jQuery图片操作技巧大全》、《jQuery表格(table)操作技巧汇总》、《jQuery切换特效与技巧总结》、《jQuery扩展技巧总结》、《jQuery常用插件及用法总结》、《jQuery常见经典特效汇总》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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