<%@ Page Language="C#" %>
<%@ Import Namespace="System.IO" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
void Page_Load()
{
if (!Page.IsPostBack)
{
DirectoryInfo dir = new DirectoryInfo(MapPath("~/Photos"));
rptPhotos.DataSource = dir.GetFiles("*.jpg");
rptPhotos.DataBind();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<style type="text/css">
.photo
{
width:400px;
background-color:white;
filter:progid:DXImageTransform.Microsoft.Fade(duration=2);
}
</style>
<script type="text/javascript">
var photos = new Array();
window.setInterval(showImage, 5000);
function showImage()
{
if (photos.length > 0)
{
var index = Math.floor(Math.random() * photos.length);
var image = document.getElementById('imgPhoto');
image.src = photos[index];
if (image.filters)//filters是什么?
{
image.filters[0].Apply();//不太懂
image.filters[0].Play();//不太懂
}
}
}
</script>
<title>Show Repeater Photos</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<img id="imgPhoto" alt="" class="photo" />
<script type="text/javascript">
<asp:Repeater
id="rptPhotos"
Runat="server">
<ItemTemplate>
<%# Eval("Name", "photos.push('Photos/{0}')") %>//这个地方不太懂
</ItemTemplate>
</asp:Repeater>
showImage();
</script>
</div>
</form>
</body>
</html>
这段程序看不太懂.特别是我注释的地方,求帮助
<%# Eval("Name", "photos.push('Photos/{0}')") %>//这个地方不太懂
表示往JS数组对象photos里面添加数组单元,
if (image.filters)//filters是什么?
{
image.filters[0].Apply();//不太懂
image.filters[0].Play();//不太懂
}
filters 是image的一种滤镜对象,
判断语句的意思是如果该image支持filters,则调用filters里面的两个方法,具体是什么东东没必要去深究