基于jQuery实现滚动切换效果

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仿锋利的Jquery案例做的一个滚动切换效果，供大家参考，具体内容如下

效果如下图:

前台HTML代码如下:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>滚动图</title>
  <link rel="stylesheet" type="text/css" href="css/RollControl.css" />
  <script type="text/javascript" src="script/jquery-1.8.3.js"></script>
  <script type="text/javascript">
    $(function () {
      var page = 1;
      var i = 4;
      var $v_trends = $("#view_menu_trends").find("li");
      $v_trends.eq(0).addClass('currentTrends');//默认第一个点选中
      $(".next").click(function () {
        var $parent = $("#view_menu");
        var $v_content = $("#view_content");//外围width
        var $v_show = $("#view_content_fixed");//

        var v_width = $v_content.width();
        var len = $v_content.find('li').length;
        var page_count = Math.ceil(len / i);//所有的图片数/版面数=总页数
        if (!$v_show.is(":animated")) {
          if (page == page_count) {
            $v_show.animate({ left: '0px' }, 'slow');//如果超过总页数 那么就跳回第一页
            page = 1;
          } else {
            $v_show.animate({ left: '-=' + v_width }, 'slow');
            page++;
          }
          $v_trends.removeClass('currentTrends').eq(page - 1).addClass('currentTrends');
        }
      });
      $(".pre").click(function () {
        var $parent = $("#view_menu");
        var $v_content = $("#view_content");//外围width
        var $v_show = $("#view_content_fixed");//
        var v_width = $v_content.width();
        var len = $v_content.find('li').length;
        var page_count = Math.ceil(len / i);//所有的图片数/版面数=总页数
        if (!$v_show.is(":animated")) {//判断是否是动画状态
          if (page == 1) {
            $v_show.animate({ left: '-=' + (page_count - 1) * v_width + "px" }, 'slow');//到了第一页那么跳转到最后一页
            page = page_count;
          } else {
            $v_show.animate({ left: '+=' + v_width }, 'slow');
            page--;
          }
          $v_trends.removeClass('currentTrends').eq(page - 1).addClass('currentTrends');
        }
      });
    });
  </script>
</head>
<body>
  <div>
    <div id="view_menu">
      <div id="view_menu_title"><span>热播电视剧</span></div>
      <div id="view_menu_trends">
        <ul>
          <li>●</li>
          <li>●</li>
          <li>●</li>
        </ul>
      </div>
      <div id="view_menu_control">
        <span>
          <img class="pre" src="Rollpic/left_arrow.png" /></span>
        <span>
          <img class="next" src="Rollpic/right_arrow.png" /></span>
      </div>
    </div>
    <div id="view_content">
      <div id="view_content_fixed">
        <ul>
          <li>
            <div>
              <img src="Rollpic/1.jpg" /></div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/2.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/3.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/4.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/5.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/6.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/7.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/8.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/9.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/10.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/11.jpg" />
            </div>
            <span></span></li>
          <li>
            <div>
              <img src="Rollpic/12.jpg" />
            </div>
            <span></span></li>
        </ul>
      </div>
    </div>
  </div>
</body>
</html>

RollControl.css代码如下:

body {
  margin: 0px;
  padding: 0px;
}

#view_menu {
  width: 600px;
  height: 30px;
  line-height: 30px;
  cursor: default;
}

#view_menu_title {
  float: left;
  font-family: 'Microsoft YaHei';
  width: 150px;
  text-align: center;
}

#view_menu_trends {
  float: left;
  line-height: 30px;
  color: #99CC99;
  font-size: 10px;
}

.currentTrends {
  color: #009933;
}

#view_menu_trends ul {
  list-style: none;
  margin: 0px;
  padding: 0px;
}

#view_menu_trends ul li {
  text-align: center;
  float: left;
  width: 15px;
}

#view_menu_control {
  float: left;
  width: 100px;
  height: 30px;
  text-align: center;
}

#view_menu_control img {
  width: 25px;
  height: 25px;
  line-height: 30px;
  cursor: pointer;
}

#view_content {
  width: 548px;
  height: 178px;
  position: relative;
  overflow: hidden;
  border: 1px solid #CCCCCC;
}

#view_content_fixed {
  position: absolute;
  width: 2500px;
}

#view_content_fixed img {
  cursor: pointer;
}

#view_content ul {
  margin: 0px;
  position: absolute;
  padding: 0px;
}

#view_content ul li {
  margin: 0px;
  padding: 0px;
  float: left;
  padding: 8px;
  list-style: none;
  display: inline;
}

.view_content_fixed下的SPAN标签是为了加标题的

效果图如下: