同步轮播

Question

我目前正在使用 Owl Carousel 插件创建多个同步的轮播，如下面地址所示，尽管在一页上有多个轮播。

http://owlgraphic.com/owlcarousel/demos/sync.html

我成功地复制了轮播，并让它们在处理不同数量的小物品时除了一个特定的问题之外独立工作。当我在顶部轮播中创建的项目多于在底部创建的项目并选择底部轮播显示项目之外的一个小项目时，两个小项目轮播都会移动以显示该项目（在顶部未选择）

也就是说，使用下面的代码，从顶部轮播中选择“20”，然后观看底部轮播的小物品轮播向右移动显示项目20。然后选择顶部小物品轮播上的项目3，观看底部小物品轮播再次向后移动。奇怪的是，当底部轮播的 jQuery 参数中增加项目数时，它根本不会影响顶部的。

<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>

我确定这是一个需要为其分配不同名称的变量的情况，但我终其一生都无法找出问题所在。有什么想法吗？

Answer 1

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”变量的简单案例。现在给它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)
    }

  }