首先感谢:http://www.cnblogs.com/cloudgamer/,很强很实用的一些js.
本篇原文出自http://www.cnblogs.com/cloudgamer/archive/2008/05/23/1205642.html.
因前一段做的一个门户网站首页确实用到了这样的js,轮流显示图片信息,其实很多门户网站都有类似的,可以去查看'页面源代码'寻找可重用js,着实麻烦.当时首先想到的是简单地用marquee 滚动实现,可就是初次打开时有空白出现(可能叫无缝滚动技术,有待下次解决).,后来在网上找的swf实现的,因为图片链接信息,要从数据库中读取,实时更新(可能确实可以,有待解决),,再后来直接整了个静态图片放上面(项目一直拖着,说服务器是unix要转成java做~~~)我呀晕囧o(╯□╰)o.
预实现效果 :::::
首先,头部引入css,和js
代码
1
<
style type
=
"
text/css
"
>
2
.container{
3
width:280px;
4
height:200px;
5
border:1px solid #eee;
6
position:relative;
7
}
8
#idPicText{
9
background:#eee;
10
line
-
height:25px;
11
text
-
align:center;
12
font
-
weight:bold;
13
width:282px;
14
white
-
space:nowrap;
15
overflow:hidden;
16
font
-
size:12px;
17
}
18
#idPicText a{
19
text
-
decoration:none;
20
color:#
333
;
21
display:block;
22
}
23
24
#idNum{ position:absolute; right:5px; bottom:5px;}
25
#idNum li{
26
float
: left;
27
list
-
style:none;
28
color: #fff;
29
text
-
align: center;
30
line
-
height: 16px;
31
width: 16px;
32
height: 16px;
33
font
-
family: Arial;
34
font
-
size: 12px;
35
cursor: pointer;
36
margin: 1px;
37
border: 1px solid #
707070
;
38
background
-
color: #060a0b;
39
}
40
#idNum li.on{
41
line
-
height: 18px;
42
width: 18px;
43
height: 18px;
44
font
-
size: 14px;
45
border:
0
;
46
background
-
color: #ce0609;
47
font
-
weight: bold;
48
}
49
50
<
/
style>
51
<
script type
=
"
text/javascript
"
>
52
var
isIE
=
(document.all)
?
true
:
false
;
53
54
var
$
=
function
(id) {
55
return
"
string
"
==
typeof
id
?
document.getElementById(id) : id;
56
};
57
58
var
Class
=
{
59
create:
function
() {
60
return
function
() {
this
.initialize.apply(
this
, arguments); }
61
}
62
}
63
64
var
Extend
=
function
(destination, source) {
65
for
(
var
property
in
source) {
66
destination[property]
=
source[property];
67
}
68
}
69
70
var
Bind
=
function
(object, fun) {
71
return
function
() {
72
return
fun.apply(object, arguments);
73
}
74
}
75
76
var
Each
=
function
(list, fun){
77
for
(
var
i
=
0
, len
=
list.length; i
<
len; i
++
) { fun(list[i], i); }
78
};
79
80
81
//
ie only
82
var
RevealTrans
=
Class.create();
83
RevealTrans.prototype
=
{
84
initialize:
function
(container, options) {
85
this
._img
=
document.createElement(
"
img
"
);
86
this
._a
=
document.createElement(
"
a
"
);
87
88
this
._timer
=
null
;
//
计时器
89
this
.Index
=
0
;
//
显示索引
90
this
._onIndex
=
-
1
;
//
当前索引
91
92
this
.SetOptions(options);
93
94
this
.Auto
=
!!
this
.options.Auto;
95
this
.Pause
=
Math.abs(
this
.options.Pause);
96
this
.Duration
=
Math.abs(
this
.options.Duration);
97
this
.Transition
=
parseInt(
this
.options.Transition);
98
this
.List
=
this
.options.List;
99
this
.onShow
=
this
.options.onShow;
100
101
//
初始化显示区域
102
this
._img.style.visibility
=
"
hidden
"
;
//
第一次变换时不显示红x图
103
this
._img.style.width
=
this
._img.style.height
=
"
100%
"
;
this
._img.style.border
=
0
;
104
this
._img.onmouseover
=
Bind(
this
,
this
.Stop);
105
this
._img.onmouseout
=
Bind(
this
,
this
.Start);
106
isIE
&&
(
this
._img.style.filter
=
"
revealTrans()
"
);
107
108
this
._a.target
=
"
_blank
"
;
109
110
$(container).appendChild(
this
._a).appendChild(
this
._img);
111
},
112
//
设置默认属性
113
SetOptions:
function
(options) {
114
this
.options
=
{
//
默认值
115
Auto:
true
,
//
是否自动切换
116
Pause:
1000
,
//
停顿时间(微妙)
117
Duration:
1
,
//
变换持续时间(秒)
118
Transition:
23
,
//
变换效果(23为随机)
119
List: [],
//
数据集合,如果这里不设置可以用Add方法添加
120
onShow:
function
(){}
//
变换时执行
121
};
122
Extend(
this
.options, options
||
{});
123
},
124
Start:
function
() {
125
clearTimeout(
this
._timer);
126
//
如果没有数据就返回
127
if
(
!
this
.List.length)
return
;
128
//
修正Index
129
if
(
this
.Index
<
0
||
this
.Index
>=
this
.List.length){
this
.Index
=
0
; }
130
//
如果当前索引不是显示索引就设置显示
131
if
(
this
._onIndex
!=
this
.Index){
this
._onIndex
=
this
.Index;
this
.Show(
this
.List[
this
.Index]); }
132
//
如果要自动切换
133
if
(
this
.Auto){
134
this
._timer
=
setTimeout(Bind(
this
,
function
(){
this
.Index
++
;
this
.Start(); }),
this
.Duration
*
1000
+
this
.Pause);
135
}
136
},
137
//
显示
138
Show:
function
(list) {
139
if
(isIE){
140
//
设置变换参数
141
with
(
this
._img.filters.revealTrans){
142
Transition
=
this
.Transition; Duration
=
this
.Duration; apply(); play();
143
}
144
}
145
this
._img.style.visibility
=
""
;
146
//
设置图片属性
147
this
._img.src
=
list.img;
this
._img.alt
=
list.text;
148
//
设置链接
149
!!
list[
"
url
"
]
?
(
this
._a.href
=
list[
"
url
"
]) :
this
._a.removeAttribute(
"
href
"
);
150
//
附加函数
151
this
.onShow();
152
},
153
//
添加变换对象
154
Add:
function
(sIimg, sText, sUrl) {
155
this
.List.push({ img: sIimg, text: sText, url: sUrl });
156
},
157
//
停止
158
Stop:
function
() {
159
clearTimeout(
this
._timer);
160
}
161
};
162
<
/
script>
可能会改动的:
1..container{ width:280px; height:200px; border:1px solid #eee; position:relative; }根据页面实际需要,修改图片宽度和高度..
2.this.options = {//默认值 Auto: true,//是否自动切换 Pause: 1000,//停顿时间(微妙) Duration: 1,//变换持续时间(秒) Transition: 23,//变换效果(23为随机) List: [],//数据集合,如果这里不设置可以用Add方法添加 onShow: function(){}//变换时执行 };修改持续时间及变换效果,停顿时间
然后把以下代码,放到页面的合适位置(建议不用改动id,class等)
<
div id
=
"
idPicShow
"
class
=
"
container
"
>
<
ul id
=
"
idNum
"
>
<
/
ul>
<
/
div>
<
div id
=
"
idPicText
"
><
/
div>
最后在模块下面调用js,
<
script
>
beginLunHuan();
<
/
script>
代码
function
beginLunHuan(){
//
添加变换对象
/*
var rvt = new RevealTrans("idPicShow");
rvt.Add('1.jpg', '图片变换效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/05/23/1205642.html');
rvt.Add('2.jpg', '图片滑动展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/05/13/1194272.html');
rvt.Add('3.jpg', '图片切换展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/07/06/1236770.html');
rvt.Add('4.jpg', '图片切换展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/07/06/1236770.html');
rvt.Add('5.jpg', '图片切换展示效果', 'http://www.cnblogs.com/cloudgamer/archive/2008/07/06/1236770.html');
*/
<%
=
str
%>
var
oText
=
$(
"
idPicText
"
), arrImg
=
[];
var
oNum
=
$(
"
idNum
"
), arrNum
=
[];
//
设置图片列表
Each(rvt.List,
function
(list, i){
//
图片式
var
img
=
document.createElement(
"
img
"
);
img.src
=
list[
"
img
"
]; img.alt
=
list[
"
text
"
];
arrImg[i]
=
img;
//
按钮式
var
li
=
document.createElement(
"
li
"
);
li.innerHTML
=
i
+
1
;
arrNum[i]
=
li;
oNum.appendChild(li);
//
事件设置
img.onmouseover
=
li.onmouseover
=
function
(){ rvt.Auto
=
false
; rvt.Index
=
i; rvt.Start(); };
img.onmouseout
=
li.onmouseout
=
function
(){ rvt.Auto
=
true
; rvt.Start(); };
});
//
设置图片列表样式 文本显示区域
rvt.onShow
=
function
(){
var
i
=
this
.Index, list
=
this
.List[i];
//
图片式
Each(arrImg,
function
(o){ o.className
=
""
; }); arrImg[i].className
=
"
on
"
;
//
按钮式
Each(arrNum,
function
(o){ o.className
=
""
; }); arrNum[i].className
=
"
on
"
;
//
文本区域
oText.innerHTML
=
!!
list.url
?
"
<a href='
"
+
list.url
+
"
' target='_blank'>
"
+
list.text
+
"
</a>
"
: list.text;
}
//
文本显示区域
oText.onmouseover
=
function
(){ rvt.Auto
=
false
; rvt.Stop(); };
oText.onmouseout
=
function
(){ rvt.Auto
=
true
; rvt.Start(); };
rvt.Start();
}
这里把调用的js放到一个函数体内beginLunHuan(),以免影响整个页面布局(实际的页面body已经是很大很大了)..
必须在模块下调用该函数,因所显示的图片信息从数据库读取的,所以这里用<% str %>,在后台为str赋值,
代码
WebApplication1.Facade.DCtNews tnews
=
new
WebApplication1.Facade.DCtNews();
int
pagecount ,rowscount;
dt
=
tnews.GetList_ByPage(
"
*
"
,
"
moduleCode=100 and isPass=1
"
,
"
inDate desc,newsId desc
"
,
1
,
1
,
5
,out pagecount,out rowscount);
str
=
"
var rvt = new RevealTrans('idPicShow');
"
;
for
(
int
index
=
0
;index
<
dt.Rows.Count;index
++
)
{
str
+=
"
rvt.Add('
"
+
dt.Rows[index][
"
picUrl
"
]
+
"
','
"
+
dt.Rows[index][
"
newstitle
"
]
+
"
','newsDetails.aspx?id=
"
+
dt.Rows[index][
"
newsId
"
]
+
"
');
"
;
}
再次感谢 http://www.cnblogs.com/cloudgamer/,
原文档