Javascript 同步传送带

我目前正在使用Owl旋转木马插件，根据下面地址显示的演示创建多个同步旋转木马，尽管在一个页面上有多个旋转木马

我成功地复制了旋转木马，使它们在处理不同数量的小项目时，除了一个特定的问题之外，还能独立工作。当我在顶部旋转木马中创建的项目多于底部，并在底部旋转木马显示的项目之外选择一个小项目时，两个小项目旋转木马都将移动，以在顶部显示未选中的项目

换句话说，使用以下代码，从顶部旋转木马中选择20，并观察底部旋转木马的小项目旋转木马向右移动以显示项目20。然后选择顶部小项目转盘上的项目3，以观察底部小项目转盘再次向后移动。奇怪的是，当项目编号在底部转盘的jQuery参数中增加时，它根本不会影响顶部的项目编号

<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.min.js"></script>
<script type="text/javascript" src="http://owlgraphic.com/owlcarousel/owl-carousel/owl.carousel.js"></script>
<script>
$(document).ready(function() {

  var sync1 = $("#sync1");
  var sync2 = $("#sync2");

  sync1.owlCarousel({
    singleItem : true,
    slideSpeed : 1000,
    navigation: true,
    pagination:false,
    afterAction : syncPosition,
    responsiveRefreshRate : 200,
  });

  sync2.owlCarousel({
    items : 20,
    itemsDesktop      : [1199,10],
    itemsDesktopSmall     : [979,10],
    itemsTablet       : [768,8],
    itemsMobile       : [479,4],
    pagination:false,
    responsiveRefreshRate : 100,
    afterInit : function(el){
      el.find(".owl-item").eq(0).addClass("synced");
    }
  });

  function syncPosition(el){
    var current = this.currentItem;
    $("#sync2")
      .find(".owl-item")
      .removeClass("synced")
      .eq(current)
      .addClass("synced")
    if($("#sync2").data("owlCarousel") !== undefined){
      center(current)
    }
  }

  $("#sync2").on("click", ".owl-item", function(e){
    e.preventDefault();
    var number = $(this).data("owlItem");
    sync1.trigger("owl.goTo",number);
  });

  function center(number){
    var sync2visible = sync2.data("owlCarousel").owl.visibleItems;
    var num = number;
    var found = false;
    for(var i in sync2visible){
      if(num === sync2visible[i]){
        var found = true;
      }
    }

    if(found===false){
      if(num>sync2visible[sync2visible.length-1]){
        sync2.trigger("owl.goTo", num - sync2visible.length+2)
      }else{
        if(num - 1 === -1){
          num = 0;
        }
        sync2.trigger("owl.goTo", num);
      }
    } else if(num === sync2visible[sync2visible.length-1]){
      sync2.trigger("owl.goTo", sync2visible[1])
    } else if(num === sync2visible[0]){
      sync2.trigger("owl.goTo", num-1)
    }

  }


  /* carousel two */
  var sync3 = $("#sync3");
  var sync4 = $("#sync4");

  sync3.owlCarousel({
    singleItem : true,
    slideSpeed : 1000,
    navigation: true,
    pagination:false,
    afterAction : syncPosition2,
    responsiveRefreshRate : 200,
  });

  sync4.owlCarousel({
    items : 15,
    itemsDesktop      : [1199,10],
    itemsDesktopSmall     : [979,10],
    itemsTablet       : [768,8],
    itemsMobile       : [479,4],
    pagination:false,
    responsiveRefreshRate : 100,
    afterInit : function(el){
      el.find(".owl-item").eq(0).addClass("synced");
    }
  });

  function syncPosition2(el){
    var current = this.currentItem;
    $("#sync4")
      .find(".owl-item")
      .removeClass("synced")
      .eq(current)
      .addClass("synced")
    if($("#sync4").data("owlCarousel") !== undefined){
      center(current)
    }
  }

  $("#sync4").on("click", ".owl-item", function(e){
    e.preventDefault();
    var number = $(this).data("owlItem");
    sync3.trigger("owl.goTo",number);
  });

  function center(number){
    var sync4visible = sync4.data("owlCarousel").owl.visibleItems;
    var num = number;
    var found = false;
    for(var i in sync4visible){
      if(num === sync4visible[i]){
        var found = true;
      }
    }

    if(found===false){
      if(num>sync4visible[sync4visible.length-1]){
        sync4.trigger("owl.goTo", num - sync4visible.length+2)
      }else{
        if(num - 1 === -1){
          num = 0;
        }
        sync4.trigger("owl.goTo", num);
      }
    } else if(num === sync4visible[sync4visible.length-1]){
      sync4.trigger("owl.goTo", sync4visible[1])
    } else if(num === sync4visible[0]){
      sync4.trigger("owl.goTo", num-1)
    }

  }

});
</script>
<link rel="stylesheet" type="text/css" href="http://owlgraphic.com/owlcarousel/owl-carousel/owl.carousel.css">
<style>
#sync1 .item{
    background: #0c83e7;
    padding: 80px 0px;
    margin: 5px;
    color: #FFF;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-align: center;
}
#sync2 .item{
    background: #C9C9C9;
    padding: 10px 0px;
    margin: 5px;
    color: #FFF;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-align: center;
    cursor: pointer;
}
#sync2 .item h1{
  font-size: 18px;
}
#sync2 .synced .item{
  background: #0c83e7;
}



/*carousel 2 */
#sync3 .item{
    background: #0c83e7;
    padding: 80px 0px;
    margin: 5px;
    color: #FFF;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-align: center;
}
#sync4 .item{
    background: #C9C9C9;
    padding: 10px 0px;
    margin: 5px;
    color: #FFF;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    text-align: center;
    cursor: pointer;
}
#sync4 .item h1{
  font-size: 18px;
}
#sync4 .synced .item{
  background: #0c83e7;
}
</style>
<div id="sync1" class="owl-carousel">
  <div class="item"><h1>1</h1></div>
  <div class="item"><h1>2</h1></div>
  <div class="item"><h1>3</h1></div>
  <div class="item"><h1>4</h1></div>
  <div class="item"><h1>5</h1></div>
  <div class="item"><h1>6</h1></div>
  <div class="item"><h1>7</h1></div>
  <div class="item"><h1>8</h1></div>
  <div class="item"><h1>9</h1></div>
  <div class="item"><h1>10</h1></div>
  <div class="item"><h1>11</h1></div>
  <div class="item"><h1>12</h1></div>
  <div class="item"><h1>13</h1></div>
  <div class="item"><h1>14</h1></div>
  <div class="item"><h1>15</h1></div>
  <div class="item"><h1>16</h1></div>
  <div class="item"><h1>17</h1></div>
  <div class="item"><h1>18</h1></div>
  <div class="item"><h1>19</h1></div>
  <div class="item"><h1>20</h1></div>
  <div class="item"><h1>21</h1></div>
  <div class="item"><h1>22</h1></div>
  <div class="item"><h1>23</h1></div>
</div>
<div id="sync2" class="owl-carousel">
  <div class="item"><h1>1</h1></div>
  <div class="item"><h1>2</h1></div>
  <div class="item"><h1>3</h1></div>
  <div class="item"><h1>4</h1></div>
  <div class="item"><h1>5</h1></div>
  <div class="item"><h1>6</h1></div>
  <div class="item"><h1>7</h1></div>
  <div class="item"><h1>8</h1></div>
  <div class="item"><h1>9</h1></div>
  <div class="item"><h1>10</h1></div>
  <div class="item"><h1>11</h1></div>
  <div class="item"><h1>12</h1></div>
  <div class="item"><h1>13</h1></div>
  <div class="item"><h1>14</h1></div>
  <div class="item"><h1>15</h1></div>
  <div class="item"><h1>16</h1></div>
  <div class="item"><h1>17</h1></div>
  <div class="item"><h1>18</h1></div>
  <div class="item"><h1>19</h1></div>
  <div class="item"><h1>20</h1></div>
  <div class="item"><h1>21</h1></div>
  <div class="item"><h1>22</h1></div>
  <div class="item"><h1>23</h1></div>
</div>




<!-- carousel two -->
<div id="sync3" class="owl-carousel">
  <div class="item"><h1>1</h1></div>
  <div class="item"><h1>2</h1></div>
  <div class="item"><h1>3</h1></div>
  <div class="item"><h1>4</h1></div>
  <div class="item"><h1>5</h1></div>
  <div class="item"><h1>6</h1></div>
  <div class="item"><h1>7</h1></div>
  <div class="item"><h1>8</h1></div>
  <div class="item"><h1>9</h1></div>
  <div class="item"><h1>10</h1></div>
  <div class="item"><h1>11</h1></div>
  <div class="item"><h1>12</h1></div>
  <div class="item"><h1>13</h1></div>
  <div class="item"><h1>14</h1></div>
  <div class="item"><h1>15</h1></div>
  <div class="item"><h1>16</h1></div>
  <div class="item"><h1>17</h1></div>
  <div class="item"><h1>18</h1></div>
  <div class="item"><h1>19</h1></div>
  <div class="item"><h1>20</h1></div>
  <div class="item"><h1>21</h1></div>
  <div class="item"><h1>22</h1></div>
  <div class="item"><h1>23</h1></div>
</div>
<div id="sync4" class="owl-carousel">
  <div class="item"><h1>1</h1></div>
  <div class="item"><h1>2</h1></div>
  <div class="item"><h1>3</h1></div>
  <div class="item"><h1>4</h1></div>
  <div class="item"><h1>5</h1></div>
  <div class="item"><h1>6</h1></div>
  <div class="item"><h1>7</h1></div>
  <div class="item"><h1>8</h1></div>
  <div class="item"><h1>9</h1></div>
  <div class="item"><h1>10</h1></div>
  <div class="item"><h1>11</h1></div>
  <div class="item"><h1>12</h1></div>
  <div class="item"><h1>13</h1></div>
  <div class="item"><h1>14</h1></div>
  <div class="item"><h1>15</h1></div>
  <div class="item"><h1>16</h1></div>
  <div class="item"><h1>17</h1></div>
  <div class="item"><h1>18</h1></div>
  <div class="item"><h1>19</h1></div>
  <div class="item"><h1>20</h1></div>
  <div class="item"><h1>21</h1></div>
  <div class="item"><h1>22</h1></div>
  <div class="item"><h1>23</h1></div>
</div>

---

我确信这是一个变量的情况，需要给它指定一个不同的名称，但我一辈子都搞不清楚到底出了什么问题。有什么想法吗？

我自己看了一下，这是一个在脚本的第二个副本中重命名current、num和number变量的简单例子。现在给他们起个更有意义的名字

  /* carousel two */
  var sync3 = $("#sync3");
  var sync4 = $("#sync4");

  sync3.owlCarousel({
    singleItem : true,
    slideSpeed : 1000,
    navigation: true,
    pagination:false,
    afterAction : syncPosition2,
    responsiveRefreshRate : 200,
  });

  sync4.owlCarousel({
    items : 15,
    itemsDesktop      : [1199,10],
    itemsDesktopSmall     : [979,10],
    itemsTablet       : [768,8],
    itemsMobile       : [479,4],
    pagination:false,
    responsiveRefreshRate : 100,
    afterInit : function(el){
      el.find(".owl-item").eq(0).addClass("synced");
    }
  });

  function syncPosition2(el){
    var current2 = this.currentItem;
    $("#sync4")
      .find(".owl-item")
      .removeClass("synced")
      .eq(current2)
      .addClass("synced")
    if($("#sync4").data("owlCarousel") !== undefined){
      center2(current2)
    }
  }

  $("#sync4").on("click", ".owl-item", function(e){
    e.preventDefault();
    var number2 = $(this).data("owlItem");
    sync3.trigger("owl.goTo",number2);
  });

  function center2(number2){
    var sync4visible = sync4.data("owlCarousel").owl.visibleItems;
    var num2 = number2;
    var found = false;
    for(var i in sync4visible){
      if(num2 === sync4visible[i]){
        var found = true;
      }
    }

    if(found===false){
      if(num2>sync4visible[sync4visible.length-1]){
        sync4.trigger("owl.goTo", num2 - sync4visible.length+2)
      }else{
        if(num2 - 1 === -1){
          num2 = 0;
        }
        sync4.trigger("owl.goTo", num2);
      }
    } else if(num2 === sync4visible[sync4visible.length-1]){
      sync4.trigger("owl.goTo", sync4visible[1])
    } else if(num === sync4visible[0]){
      sync4.trigger("owl.goTo", num2-1)
    }

  }