jQuery实现经典的网页3D轮播图封装功能【附源码下载】

<script src="/UploadFiles/2021-04-02/jquery-1.11.0.js">

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="/UploadFiles/2021-04-02/dc1.jpg">

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。