精彩的jquery弹幕效果

html页面如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title></title>

  <link href="static/css/bootstrap.min.css" rel="stylesheet" type="text/css" />

  <link href="static/css/style.css" rel="stylesheet" type="text/css" />

  <link href="dist/css/barrager.css" rel="stylesheet" type="text/css" />

 </head>

 <body>

  <button class="bb-trigger btn btn-primary btn-lg bb-light-blue" onclick=" run_example() ">弹弹弹</button>

  <hr/>

  <div class="row">

   <div class="col-md-6">

    <form class="form-horizontal">

     <div style="display: none">

     <div class="form-group">

     <label class="col-sm-2 control-label" >文字</label>

     <div class="col-sm-6">

      <input class="form-control" name="info" type="text" placeholder="弹幕文字信息"/>

     </div>

    </div>

     <div class="form-group">

     <label class="col-sm-2 control-label" >链接</label>

     <div class="col-sm-6">

      <input class="form-control" name="href" type="text" placeholder="http://www.yaseng.org"/>

     </div>

     </div>

     <div class="form-group">

     <label class="col-sm-2 control-label" >延迟</label>

     <div class="col-sm-2">

      <input class="form-control" name="speed" type="text" placeholder="" value="" />

     </div>

     <label class="col-sm-2 control-label" >关闭按钮</label>

     <div class="col-sm-2">

      <input class="form-control" name="close" type="checkbox" checked >

     </div>

    </div>

     <div class="form-group">

     <label class="col-sm-2 control-label" >高度</label>

     <div class="col-sm-4">

      <label class="radio-inline">

       <input type="radio" name="bottomradio" value="" checked="checked"> 随机

      </label>

      <label class="radio-inline">

       <input type="radio" name="bottomradio" value="" > 设置

      </label>

     </div>

     <div class="col-sm-2">

      <input class="form-control" name="bottom" type="text" placeholder="" value="" />

     </div>

    </div>

     <div class="form-group">

      <label class="col-sm-2 control-label" >图片</label>

      <div class="col-sm-6">

       <label class="radio-inline">

        <input type="radio" name="img" value="cute.png" checked=""> cute.png

       </label>

       <label class="radio-inline">

        <input type="radio" name="img" value="haha.gif"> haha.gif

       </label>

       <label class="radio-inline">

        <input type="radio" name="img" value="none"> 无图

       </label>

      </div>

     </div>

     </div>

     <div class="form-group">

     <label class="col-sm-3 control-label" ></label>

     <div class="col-sm-3">

      <input type="button" class="btn btn-primary bb-light-blue" onclick=" run() " value="运行">

     </div>

     <div class="col-sm-3">

      <button class="btn btn-warning " onclick=" clear_barrage() "> 清除</button>

     </div>

    </div>

    </form>

   </div>

  <div class="col-md-6" style="display: none">

   <textarea class="form-control" id="barrager-code" rows="" ></textarea>

  </div>

  </div>

 </body>

 <script src="static/js/jquery-1.9.1.min.js" type="text/javascript"></script>

 <script src="static/js/bootstrap.min.js" type="text/javascript"></script>

 <script src="dist/js/jquery.barrager.js" type="text/javascript"></script>

 <script type="text/javascript">

  String.prototype.format = function (args) {

   var result = this;

   if (arguments.length < ) {

    return result;

   }

   var data = arguments;

   if (arguments.length ==  && typeof (args) == "object") {

    data = args;

   }

   for (var key in data) {

    var value = data[key];

    if (undefined != value) {

     result = result.replace("{" + key + "}", value);

    }

   }

   return result;

  }

  var barrager_code =

  'var item={\n' +

  " img:'{img}', //图片 \n" +

  " info:'{info}', //文字 \n" +

  " href:'{href}', //链接 \n" +

  " close:{close}, //显示关闭按钮 \n" +

  " speed:{speed}, //延迟,单位秒,默认6 \n" +

  " bottom:{bottom}, //距离底部高度,单位px,默认随机 \n" +

  " color:'{color}', //颜色,默认白色 \n" +

  " old_ie_color:'{old_ie_color}', //ie低版兼容色,不能与网页背景相同,默认黑色 \n" +

  " }\n" + "$('body').barrager(item);"

  ;

  $(function() {

   var default_item = {

    'img': 'static/heisenberg.png',

    'info': '弹幕文字信息',

    'href': 'http://www.yaseng.org',

    'close': true,

    'speed': ,

    'bottom': ,

    'color': '#fff',

    'old_ie_color': '#000000'

   };

   var item = { 'img': 'static/img/heisenberg.png', 'href': 'http://www.baidu.com', 'info': 'oldman!WQNMLGB' };

   //item1={'href':'http://www.baidu.com','info':'这是一条很长很长的字幕','close':false};

   $('#barrager-code').val(barrager_code.format(default_item));

   $('body').barrager(item);

  });

  function run() {

   var shi = [

    "朱砂", "天下", "杀伐", "人家", "韶华", "风华", "繁华", "血染", " 墨染 ", "白衣", " 素衣", " 嫁衣 ", "倾城 ", "孤城 ", "空城 ", "旧城", "旧人 ", "伊人 ", "心疼 ", "春风", " 古琴 ", "无情 ", "迷离 ", "奈何", " 断弦", " 焚尽 ", "散乱", " 陌路 ", "乱世 ", "笑靥 ", "浅笑", " 明眸", " 轻叹", " 烟火", "一生 " +

    "三生", " 浮生 ", "桃花 ", "梨花", " 落花", " 烟花", " 离殇", " 情殇", " 爱殇 ", "剑殇", " 灼伤", " 仓皇 ", "匆忙", " 陌上", " 清商", "焚香 ", "墨香 ", "微凉 " +

    "断肠", " 痴狂 ", "凄凉", " 黄梁", " 未央", " 成双", " 无恙", " 虚妄", " 凝霜", " 洛阳", " 长安", " 江南", " 忘川", " 千年", " 纸伞 ", "烟雨", " 回眸 ", "公子" +

    "红尘", " 红颜 ", "红衣", " 红豆 ", "红线 ", "青丝 ", "青史", " 青冢", " 白发", " 白首", " 白骨 ", "黄土", " 黄泉 ", "碧落", " 紫陌情深缘浅", " 情深不寿 ", "莫失莫忘" +

    " 阴阳相隔 ", "如花美眷", " 似水流年", " 眉目如画", " 曲终人散", " 繁华落尽 ", "不诉离殇 ", "一世长安"

   ];

   var info = shi[Math.floor(Math.random() * shi.length)]; //$('input[name=info]').val();

   (info == '') ? info = '请填写弹幕文字' : info = info;

   var href = $('input[name=href]').val();

   var speed = parseInt($('input[name=speed]').val());

   var bottom = parseInt($('input[name=bottom]').val());

   var code = barrager_code;

   if ($('input:radio[name=bottomradio]:checked').val() == ) {

    var window_height = $(window).height() - ;

    bottom = Math.floor(Math.random() * window_height + );

    code = code.replace(" bottom:{bottom}, //距离底部高度,单位px,默认随机 \n", '');

   }

   var img = $('input:radio[name=img]:checked').val();

   if (img == 'none') {

    code = code.replace(" img:'{img}', //图片 \n", '');

   }

   var item = {

    'img': 'static/img/' + img,

    'info': info,

    'href': href,

    'close': true,

    'speed': speed,

    'bottom': bottom,

    'color': getRandomColor(),

    'old_ie_color': getRandomColor()

   };

   if (!$('input[name=close]').is(':checked')) {

    item.close = false;

   }

   code = code.format(item);

   $('#barrager-code').val(code);

   try {

    eval(code);

   } catch (e) {

    /*name: 错误名称

    number: 错误号

    description: 描述信息

    message: 错误信息

    fileName: 错误发生的文件

    stack: 错误发生时的调用堆栈 */

    alert(e.message);

   }

   return false;

  }

  function clear_barrage() {

   $.fn.barrager.removeAll();

  }

  function getRandomColor() {

   return "#" + ("" + ((Math.random() *  + 0.5) >> ).toString()).slice(-);

  } 

  function run_example() {

   var wenzi = ["Hello", "网上", "x战警", "蜘蛛侠", "死侍"];

   var example_item = { 'img': 'static/img/heisenberg.png', 'info': wenzi[Math.floor(Math.random() * wenzi.length)] };

   $('body').barrager(example_item);

   return false;

  }

 </script>

</html>
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精彩的jquery弹幕效果

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