JS json随机广告前端优化

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javascript

注意：[ ]符号在javascript中定义一个数组，{ }则定义一个对象

javascript随机数生成方法

1.使用内置的随机数发生方法:
Math.random(); //该方法产生一个0到1之间的浮点数。
Math.floor(Math.random()*10+1); //1-10
Math.floor(Math.random()*24);//0-23

2.基于时间，亦可以产生随机数:
var now=new Date();
var number = now.getSeconds(); //这将产生一个基于目前时间的0到59的整数。
var now=new Date();
var number = now.getSeconds()%43; //这将产生一个基于目前时间的0到42的整数。

创建随机图片，这是利用随机数所能做的最简单的事了。此例中，我们假设有10张图片，　　banner1.gif.....banner10.gif，每当文档被载入时，我们希望能随机地显示这些图片。

<script language="JavaScript"><!--  
document.write('<img src="../images/banner' + rand(10) + '.gif" width=400 height=40>');  
//--></script>

4.JS生成不重复的随机数组

<script type="text/javascript">
    function getkfArrayItems(s, e, num) {
        var arr = new Array();
        for (i = s; i < e; i++) {
            arr[i] = i;
        }
        var temp_array = new Array();
        for (var index in arr) {
            temp_array.push(arr[index]);
        }
        var return_array = new Array();
        for (var i = 0; i < num; i++) {
            if (temp_array.length > 0) {
                var arrIndex = Math.floor(Math.random() * temp_array.length);
                return_array[i] = temp_array[arrIndex];
                temp_array.splice(arrIndex, 1);//入栈后删除 即去重
            } else {
                break;
            }
        }
		return return_array;
    }
	//得到数组的随机元素12个
    kf_array = getkfArrayItems(0, 20, 12);
</script>

广告所有列表ads.js

<!--
document.write("<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://code.116b.com/htmlcode/2499.html\" target=\"_blank\" title=\"_blank\">\r\n     <img src=\"http://img.265g.com/images/gg/yxwz0926.jpg\" width=\"50\" height=\"50\" />英雄王座</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://tongji.wan5d.com/pubpage/13_20101209829.html \"\r\n        target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/wd09221.jpg\" width=\"50\" height=\"50\" />御宠风云</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://game.51.com/act/51wt/html?from=265g_1\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/5109281.jpg\" width=\"50\" height=\"50\" />神仙道</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://game.51.com/act/51wt/html?from=265g_2\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/smzt09281.jpg\" width=\"50\" height=\"50\" />神魔遮天</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://lm.189play.com/?zj12=265\" \r\n        target=\"_blank\" title=\"战将OL\">\r\n        <img src=\"http://img.265g.com/images/gg/zj0803.jpg\" width=\"50\" height=\"50\" />战将OL</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://tc.zhaizu.com/shanhai/flash4/index.php?id=10240\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/zz09011.jpg\" width=\"50\" height=\"50\" />山海创世录</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://un.3737.com/count/index.php?webid=17&adid=667\"\r\n        target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/37370801.jpg\" width=\"50\" height=\"50\" />西游征途</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://gg.xiyou6.com/265g.html?sid=10\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/dp0823.jpg\" width=\"50\" height=\"50\" />极品修真</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://tg.139p.com/zhfy/zh_265g.html?p=s&s=[plid]\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/zhfy0923.jpg\" width=\"50\" height=\"50\" />战魂风云</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://img.kd008.com/gg/10147.html\" target=\"_blank\">\r\n<img src=\"http://img.265g.com/images/gg/xdzz0923.jpg\" width=\"50\" height=\"50\" />现代战争2\r\n</a\r\n></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://gg.9c.com/gg/track/event?id=18.54.1&cd=ggcc&sn=33948879f52cfd4f41a4b125bdfe1da9e3154092&url=http%3A%2F%2Fimages.9c.com%2Fwztx%2F1%2F2%2F265g%2F265g_kf%2F265g_kf.html\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/wztx09261.jpg\" width=\"50\" height=\"50\" />王者之战</a></div>\r\n<div class=\"gimg_li\">\r\n    <a href=\"/goto.html?url=http://p.17kuxun.com/s/1/246/126.html\" target=\"_blank\">\r\n        <img src=\"http://img.265g.com/images/gg/sssg0826.jpg\" width=\"50\" height=\"50\" />盛世三国</a></div>");
-->

随机广告列表

<script src="jquery.js" type="text/javascript"></script>
<div class="top_kaifu"></div>
<div id="div_zxkf_h" style="display: none">
	<script src="ads.js" type="text/javascript"></script>
</div>
<script type="text/javascript">
	var kfhtml='';
	for (i = 0; i < kf_array.length; i++)
	{
		kfhtml+='<div class="gimg_li">'+$('#div_zxkf_h>div').eq(kf_array[i]).html()+'</div>';
	}
	$('.top_kaifu').append('<i>最新开服</i>'+kfhtml);
</script>

效果

方式二.广告所有列表数据list.js，js处理，代替后端请求 http://hudeyong926.iteye.com/blog/1123139

var jsonarr=eval([{"pic":"/pop/images/1.gif","gname":"清纯美女气质大片","link":"http://www.xiumei.com/gallery/beauty/"},
{"pic":"/pop/images/2.gif","gname":"青春美少女诱人自拍","link":"http://www.xiumei.com/a/20110705/34392.shtml"},
{"pic":"/pop/images/3.gif","gname":"纯情MM魅惑美图","link":"http://www.xiumei.com/a/20110630/34096.shtml"},
{"pic":"/pop/images/4.gif","gname":"条纹控可爱制服写真","link":"http://www.xiumei.com/a/20110628/33836.shtml"},
{"pic":"/pop/images/5.gif","gname":"女神周韦彤湿身写真","link":"http://www.xiumei.com/a/20110429/30915.shtml"},
{"pic":"/pop/images/6.gif","gname":"夏季甜美感内衣外穿","link":"http://www.xiumei.com/a/20110715/35218.shtml"},
{"pic":"/pop/images/7.gif","gname":"清新日系少女发型","link":"http://www.xiumei.com/a/20110816/36976.shtml"},
{"pic":"/pop/images/8.gif","gname":"漂亮姐妹花服饰写真","link":"http://www.xiumei.com/a/20110817/37057.shtml"},
{"pic":"/pop/images/9.gif","gname":"矮个美女妙搭变高","link":"http://www.xiumei.com/a/20110818/37073.shtml"},
{"pic":"/pop/images/10.gif","gname":"90后MM可爱发型秀","link":"http://www.xiumei.com/a/20110817/36997.shtml"},
{"pic":"/pop/images/11.gif","gname":"周杰伦女友时尚搭配","link":"http://www.xiumei.com/a/20110815/36845.shtml"},
{"pic":"/pop/images/12.gif","gname":"姜妍魔鬼身材写真","link":"http://www.xiumei.com/a/20110727/35887.shtml"},
{"pic":"/pop/images/13.gif","gname":"性感内衣诱惑他心","link":"http://www.xiumei.com/a/20110816/36956.shtml"},
{"pic":"/pop/images/14.gif","gname":"最美温柔梨花头发型","link":"http://www.xiumei.com/a/20110815/36881.shtml"},
{"pic":"/pop/images/15.gif","gname":"自曝私密房事的女星","link":"http://www.xiumei.com/a/20110813/36798.shtml"},
{"pic":"/pop/images/16.gif","gname":"裸戏一夜成名的女星","link":"http://www.xiumei.com/a/20110805/36409.shtml"},
{"pic":"/pop/images/17.gif","gname":"色@情业觊觎的女星","link":"http://www.xiumei.com/a/20110813/36790.shtml"},
{"pic":"/pop/images/18.gif","gname":"Charming性感牛仔写真","link":"http://www.xiumei.com/a/20110715/35181.shtml"}]);

随机数组 html放在方法里面写html的多行效果比较自然

<script type="text/javascript">
    function setGameList(s, e, num) {
        var arr = new Array();
        for (i = s; i < e; i++) {
            arr[i] = i;
        }
        var temp_array = new Array();
        for (var index in arr) {
            temp_array.push(arr[index]);
        }
        var return_array = new Array();
        for (var i = 0; i < num; i++) {
            if (temp_array.length > 0) {
                var arrIndex = Math.floor(Math.random() * temp_array.length);
                return_array[i] = temp_array[arrIndex];
                temp_array.splice(arrIndex, 1);
            } else {
                break;
            }
        }
        var html = '';
        for (var i = 0; i < return_array.length; i++) {
            var j = return_array[i];
            html += '<li><a href="' + jsonarr[j].link + '" title="' + jsonarr[j].gname + '" target="_blank"><img src="' + jsonarr[j].pic + '"/><h3>' + jsonarr[j].gname + '</h3></a></li>';
        }
        $('#div_gamelist').append(html);
    }

    setGameList(0, 18, 15);
</script>

实例

方式3，随机改变图片的地址和链接的地址，页面的排版不改变

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf8">
<base href="http://hao.kkpk.com/"/>
<title>玩游戏送大奖！！</title>
<style>
.index_top:link {
	font-family: "宋体";
	color: #FFFFFF;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
	text-decoration: none;
}
.index_top:visited {
	font-family: "宋体";
	color: #FFFFFF;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
	text-decoration: none;
}
.index_top:hover {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top:active {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top1:link {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top1:visited {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top1:hover {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top1:active {
	font-family: "宋体";
	color: #FFFFFF;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top2:link {
	font-family: "宋体";
	color: #FF5A00;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top2:visited {
	font-family: "宋体";
	color: #FF5A00;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top2:hover {
	font-family: "宋体";
	color: #FF5A00;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top2:active {
	font-family: "宋体";
	color: #FF5A00;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top3:link {
	font-family: "宋体";
	color: #666666;
	text-decoration: none;
	font-size: 12px;
	font-weight: bold;
	line-height: 18px;
}
.index_top3:visited {
	font-family: "宋体";
	color: #666666;
	text-decoration: none;
	font-size: 12px;
	font-weight: bold;
	line-height: 18px;
}
.index_top3:hover {
	font-family: "宋体";
	color: #666666;
	text-decoration: underline;
	font-size: 12px;
	font-weight: bold;
	line-height: 18px;
}
.index_top3:active {
	font-family: "宋体";
	color: #666666;
	text-decoration: underline;
	font-size: 12px;
	font-weight: bold;
	line-height: 18px;
}
.index_top4:link {
	font-family: "宋体";
	color: #666666;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top4:visited {
	font-family: "宋体";
	color: #666666;
	text-decoration: none;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top4:hover {
	font-family: "宋体";
	color: #666666;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
.index_top4:active {
	font-family: "宋体";
	color: #666666;
	text-decoration: underline;
	font-size: 12px;
	font-weight: normal;
	line-height: 18px;
}
body {
	margin-left: 0px;
	margin-top: 0px;
	margin-right: 0px;
	margin-bottom: 0px;
}
.style4 {font-size: 12px; color: #FF6600; }
.style5 {color: #666666; font-size: 14px;}
.style7 {color: #FFFFFF; font-size: 14px; }
</style>
<script src="jquery.js"></script>
<script src="list.js"></script>
<script>
	var adsize='270x200';
	location.href.replace(/\/(\d+)-(\d+)\./,function($1,$2,$3){adsize=$2+'x'+$3;});
	
	jQuery(document).ready(function(){
		var pic = jQuery('a img');
		var link = jQuery('a');
		var num = jsonarr.length;

		var index = Math.floor(Math.random()*num);

		link.each(function(){
			if(jQuery('img',jQuery(this)).length == 0){
				var obj = jsonarr[index%num];  
				jQuery(this).attr('href',obj.url+'&FromWebId=[wid]&AdSize='+adsize); //linkurl
				index++;
			}
		})

		pic.each(function(){
			var obj = jsonarr[index%num];
			jQuery(this).attr('src',obj.pic); //image url
			jQuery(this).parent().attr('href',obj.url+'&FromWebId=[wid]&AdSize='+adsize);//linkurl
			index++;
		})
	})
</script>
</head>
<body>
<table width="270" height="200"  border="0" cellpadding="0" cellspacing="0">
  <tr>

    <td valign="top" bgcolor="#D7F1C2"><table width="100%"  border="0" cellspacing="1" cellpadding="1">
      <tr>
        <td><div align="center" class="index_top1"><a href="http://bbs.265g.com/tg/789/?FromWebId=%5Bwid%5D" target="_blank" class="index_top3">265游戏特辑 更多惊喜等着您</a></div></td>
      </tr>
      <tr>
        <td height="177" valign="top" bgcolor="#FFFFFF"><table width="100%"  border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td height="3"></td>

            </tr>
          <tr>
            <td><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank"><img src="images/4.gif" height="75" border="0"></a></div></td>
            <td><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank"><img src="images/8.gif" height="75" border="0"></a></div></td>
          </tr>
          <tr>
            <td height="20"><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank" class="index_top4"> 丝袜MM全程陪玩哟</a></div></td>
            <td><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank" class="index_top4">挑战你的视觉极限</a></div></td>

          </tr>
          <tr>
            <td height="13"><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank"><img src="images/6.gif" height="75" border="0"></a></div></td>
            <td><div align="center"><a href="http://bbs.265g.com/tg/789/?FromWebId=[wid]" target="_blank"><img src="images/7.gif" height="75" border="0"></a></div></td>
          </tr>
          <tr>
            <td height="2"></td>
            </tr>
        </table></td>

      </tr>
    </table></td>
  </tr>
</table>
</body>
</html>

效果如下