zoukankan
html css js c++ java
55种网页常用小技巧(javascript)
1. oncontextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
<
table
border oncontextmenu
=return(false)
><
td
>
no
</
table
>
可用于Table
2.
<
body
onselectstart
="return false"
>
取消选取、防止复制
3. onpaste="return false" 不准粘贴
4. oncopy="return false;" oncut="return false;" 防止复制
5.
<
link
rel
="Shortcut Icon"
href
="favicon.ico"
>
IE地址栏前换成自己的图标
6.
<
link
rel
="Bookmark"
href
="favicon.ico"
>
可以在收藏夹中显示出你的图标
7.
<
input
style
="ime-mode:disabled"
>
关闭输入法
8. 永远都会带着框架
<
script
language
="javascript"
>
<!--
if
(window
==
top)top.location.href
=
"
frames.htm
"
;
//
frames.htm为框架网页
//
--></script>
9
. 防止被人frame
<
SCRIPT LANGUAGE
=
javascript
><!--
if
(top.location
!=
self.location)top.location
=
self.location;
//
--></SCRIPT>
10
. 网页将不能被另存为
<
noscript
><
iframe src
=*
.html
></
iframe
></
noscript
>
11
.
<
input type
=
button value
=
查看网页源代码
onclick
=
"
window.location =
"
view
-
source:
"
+
"
http:
//
www.pconline.com.cn"">
12
.删除时确认
<
a href
=
"
javascript:if(confirm(
"
确实要删除吗
?
"
))location=
"
boos.asp
?&
areyou
=
删除
&
page
=
1
""
>
删除
</
a
>
13
. 取得控件的绝对位置
//
javascript
<
script language
=
"
javascript
"
>
function
getIE(e)
{
var
t
=
e.offsetTop;
var
l
=
e.offsetLeft;
while
(e
=
e.offsetParent)
{
t
+=
e.offsetTop;
l
+=
e.offsetLeft;
}
alert(
"
top=
"
+
t
+
"
/nleft=
"
+
l);
}
</
script
>
//VBScript
<
script
language
="VBScript"
>
<
!
--
function
getIE()
dim
t,l,a,b
set
a
=
document.all.img1
t
=
document.all.img1.offsetTop
l
=
document.all.img1.offsetLeft
while
a.tagName
<>
"
BODY
"
set
a
=
a.offsetParent
t
=
t
+
a.offsetTop
l
=
l
+
a.offsetLeft
wend
msgbox
"
top=
"
&
t
&
chr
(
13
)
&
"
left=
"
&
l,
64
,
"
得到控件的位置
"
end function
-->
</
script
>
14. 光标是停在文本框文字的最后
<
script
language
="javascript"
>
function
cc()
{
var
e
=
event.srcElement;
var
r
=
e.createTextRange();
r.moveStart(
"
character
"
,e.value.length);
r.collapse(
true
);
r.select();
}
</
script
>
<
input
type
=text
name
=text1
value
="123"
onfocus
="cc()"
>
15. 判断上一页的来源
javascript:
document.referrer
16. 最小化、最大化、关闭窗口
<
object
id
=hh1
classid
="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11"
>
<
param
name
="Command"
value
="Minimize"
></
object
>
<
object
id
=hh2
classid
="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11"
>
<
param
name
="Command"
value
="Maximize"
></
object
>
<
OBJECT
id
=hh3
classid
="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11"
>
<
PARAM
NAME
="Command"
VALUE
="Close"
></
OBJECT
>
<
input
type
=button
value
=最小化
onclick
=hh1.Click()
>
<
input
type
=button
value
=最大化
onclick
=hh2.Click()
>
<
input
type
=button
value
=关闭
onclick
=hh3.Click()
>
本例适用于IE
17.屏蔽功能键Shift,Alt,Ctrl
<
script
>
function
look()
{
if
(event.shiftKey)
alert(
"
禁止按Shift键!
"
);
//
可以换成ALT CTRL
}
document.onkeydown
=
look;
</
script
>
18. 网页不会被缓存
<
META
HTTP-EQUIV
="pragma"
CONTENT
="no-cache"
>
<
META
HTTP-EQUIV
="Cache-Control"
CONTENT
="no-cache, must-revalidate"
>
<
META
HTTP-EQUIV
="expires"
CONTENT
="Wed, 26 Feb 1997 08:21:57 GMT"
>
或者
<
META
HTTP-EQUIV
="expires"
CONTENT
="0"
>
19.怎样让表单没有凹凸感?
<
input
type
=text
style
="border:1 solid #000000"
>
或
<
input
type
=text
style
="border-left:none; border-right:none; border-top:none; border-bottom:
1 solid #000000"
></
textarea
>
20.
<
div
><
span
>
&
<
layer
>
的区别?
<
div
>
(division)用来定义大段的页面元素,会产生转行
<
span
>
用来定义同一行内的元素,跟
<
div
>
的唯一区别是不产生转行
<
layer
>
是ns的标记,ie不支持,相当于
<
div
>
21.让弹出窗口总是在最上面:
<
body
onblur
="this.focus();"
>
22.不要滚动条?
让竖条没有:
<
body
style
="overflow:scroll;overflow-y:hidden"
>
</
body
>
让横条没有:
<
body
style
="overflow:scroll;overflow-x:hidden"
>
</
body
>
两个都去掉?更简单了
<
body
scroll
="no"
>
</
body
>
23.怎样去掉图片链接点击后,图片周围的虚线?
<
a
href
="#"
onFocus
="this.blur()"
><
img
src
="logo.jpg"
border
=0
></
a
>
24.电子邮件处理提交表单
<
form
name
="form1"
method
="post"
action
="mailto:****@***.com"
enctype
="text/plain"
>
<
input
type
=submit
>
</
form
>
25.在打开的子窗口刷新父窗口的代码里如何写?
window.opener.location.reload()
26.如何设定打开页面的大小
<
body
onload
="top.resizeTo(300,200);"
>
打开页面的位置
<
body
onload
="top.moveBy(300,200);"
>
27.在页面中如何加入不是满铺的背景图片,拉动页面时背景图不动
<
STYLE
>
body
{
}
{
background-image
:
url(logo.gif)
;
background-repeat
:
no-repeat
;
background-position
:
center
;
background-attachment
:
fixed
}
</
STYLE
>
28. 检查一段字符串是否全由数字组成
<
script
language
="javascript"
>
<!--
function
checkNum(str)
{
return
str.match(
//
D/)==null}
alert(checkNum(
"
1232142141
"
))
alert(checkNum(
"
123214214a1
"
))
//
--></script>
29
. 获得一个窗口的大小
document.body.clientWidth; document.body.clientHeight
30
. 怎么判断是否是字符
if
(
/
[
^/
x00
-/
xff]
/
g.test(s)) alert(
"
含有汉字
"
);
else
alert(
"
全是字符
"
);
31
.TEXTAREA自适应文字行数的多少
<
textarea rows
=
1
name
=
s1 cols
=
27
onpropertychange
=
"
this.style.posHeight=this.scrollHeight
"
>
</
textarea
>
32
. 日期减去天数等于第二个日期
<
script language
=
javascript
>
function
cc(dd,dadd)
{
//
可以加上错误处理
var
a
=
new
Date(dd)
a
=
a.valueOf()
a
=
a
-
dadd
*
24
*
60
*
60
*
1000
a
=
new
Date(a)
alert(a.getFullYear()
+
"
年
"
+
(a.getMonth()
+
1
)
+
"
月
"
+
a.getDate()
+
"
日
"
)
}
cc(
"
12/23/2002
"
,
2
)
</
script
>
33. 选择了哪一个Radio
<
HTML
><
script
language
="vbscript"
>
function
checkme()
for
each
ob in radio1
if
ob.checked
then
window.alert ob.value
next
end function
</
script
><
BODY
>
<
INPUT
name
="radio1"
type
="radio"
value
="style"
checked
>
Style
<
INPUT
name
="radio1"
type
="radio"
value
="barcode"
>
Barcode
<
INPUT
type
="button"
value
="check"
onclick
="checkme()"
>
</
BODY
></
HTML
>
34.脚本永不出错
<
SCRIPT
LANGUAGE
="javascript"
>
<!--
Hide
function
killErrors()
{
return
true
;
}
window.onerror
=
killErrors;
//
-->
</
SCRIPT
>
35.ENTER键可以让光标移到下一个输入框
<
input
onkeydown
="if(event.keyCode==13)event.keyCode=9"
>
36. 检测某个网站的链接速度:
把如下代码加入
<
body
>
区域中:
<
script
language
=javascript
>
tim
=
1
setInterval(
"
tim++
"
,
100
)
b
=
1
var
autourl
=
new
Array()
autourl[
1
]
=
"
www.njcatv.net
"
autourl[
2
]
=
"
javacool.3322.net
"
autourl[
3
]
=
"
www.sina.com.cn
"
autourl[
4
]
=
"
www.nuaa.edu.cn
"
autourl[
5
]
=
"
www.cctv.com
"
function
butt()
{
document.write(
"
<form name=autof>
"
)
for
(
var
i
=
1
;i
<
autourl.length;i
++
)
document.write(
"
<input type=text name=txt
"
+
i
+
"
size=10 value=测试中……> =》<input type=text
name=url
"
+
i
+
"
size=40> =》<input type=button value=GO
onclick=window.open(this.form.url
"
+
i
+
"
.value)><br>
"
)
document.write(
"
<input type=submit value=刷新></form>
"
)
}
butt()
function
auto(url)
{
document.forms[
0
][
"
url
"
+
b].value
=
url
if
(tim
>
200
)
{document.forms[
0
][
"
txt
"
+
b].value
=
"
链接超时
"
}
else
{document.forms[
0
][
"
txt
"
+
b].value
=
"
时间
"
+
tim
/
10
+
"
秒
"
}
b
++
}
function
run()
{
for
(
var
i
=
1
;i
<
autourl.length;i
++
)document.write(
"
<img src=http://
"
+
autourl
+
"
/
"
+
Math.random()
+
"
width=1 height=1
onerror=auto(
"
http:
//
"+autourl+"")>")}
run()
</
script
>
37. 各种样式的光标
auto :标准光标
default :标准箭头
hand :手形光标
wait :等待光标
text :I形光标
vertical-text :水平I形光标
no-drop :不可拖动光标
not-allowed :无效光标
help :?帮助光标
all-scroll :三角方向标
move :移动标
crosshair :十字标
e-resize
n-resize
nw-resize
w-resize
s-resize
se-resize
sw-resize
38.页面进入和退出的特效
进入页面
<
meta
http-equiv
="Page-Enter"
content
="revealTrans(duration=x, transition=y)"
>
推出页面
<
meta
http-equiv
="Page-Exit"
content
="revealTrans(duration=x, transition=y)"
>
这个是页面被载入和调出时的一些特效。duration表示特效的持续时间,以秒为单位。transition表示使用哪种特效,取值为1-23:
0 矩形缩小
1 矩形扩大
2 圆形缩小
3 圆形扩大
4 下到上刷新
5 上到下刷新
6 左到右刷新
7 右到左刷新
8 竖百叶窗
9 横百叶窗
10 错位横百叶窗
11 错位竖百叶窗
12 点扩散
13 左右到中间刷新
14 中间到左右刷新
15 中间到上下
16 上下到中间
17 右下到左上
18 右上到左下
19 左上到右下
20 左下到右上
21 横条
22 竖条
23 以上22种随机选择一种
39.在规定时间内跳转
<
META
http-equiv
=V="REFRESH"
content
="5;URL=http://www.51js.com"
>
40.网页是否被检索
<
meta
name
="ROBOTS"
content
="属性值"
>
其中属性值有以下一些:
属性值为"all": 文件将被检索,且页上链接可被查询;
属性值为"none": 文件不被检索,而且不查询页上的链接;
属性值为"index": 文件将被检索;
属性值为"follow": 查询页上的链接;
属性值为"noindex": 文件不检索,但可被查询链接;
属性值为"nofollow": 文件不被检索,但可查询页上的链接。
41、email地址的分割
把如下代码加入
<
body
>
区域中
<
a
href
="mailto:webmaster@sina.com"
>
webmaster@sina.com
</
a
>
42、流动边框效果的表格
把如下代码加入
<
body
>
区域中
<
SCRIPT
>
l
=
Array(
6
,
7
,
8
,
9
,'a','b','b','c','d','e','f')
Nx
=
5
;Ny
=
35
t
=
"
<table border=0 cellspacing=0 cellpadding=0 height=
"
+
((Nx
+
2
)
*
16
)
+
"
><tr>
"
for
(x
=
Nx;x
<
Nx
+
Ny;x
++
)
t
+=
"
<td width=16 id=a_mo
"
+
x
+
"
> </td>
"
t
+=
"
</tr><tr><td width=10 id=a_mo
"
+
(Nx
-
1
)
+
"
> </td><td colspan=
"
+
(Ny
-
2
)
+
"
rowspan=
"
+
(Nx)
+
"
> </td><td width=16 id=a_mo
"
+
(Nx
+
Ny)
+
"
></td></tr>
"
for
(x
=
2
;x
<=
Nx;x
++
)
t
+=
"
<tr><td width=16 id=a_mo
"
+
(Nx
-
x)
+
"
> </td><td width=16 id=a_mo
"
+
(Ny
+
Nx
+
x
-
1
)
+
"
> </td></tr>
"
t
+=
"
<tr>
"
for
(x
=
Ny;x
>
0
;x
--
)
t
+=
"
<td width=16 id=a_mo
"
+
(x
+
Nx
*
2
+
Ny
-
1
)
+
"
> </td>
"
document.write(t
+
"
</tr></table>
"
)
var
N
=
Nx
*
2
+
Ny
*
2
function
f1(y)
{
for
(i
=
0
;i
<
N;i
++
)
{
c
=
(i
+
y)
%
20
;
if
(c
>
10
)c
=
20
-
c
document.all[
"
a_mo
"
+
(i)].bgColor
=
"
'#0000
"
+
l[c]
+
l[c]
+
"
'
"
}
y
++
setTimeout('f1('
+
y
+
')','
1
')}
f1(
1
)
</
SCRIPT
>
43、javascript主页弹出窗口技巧
窗口中间弹出
<
script
>
window.open(
"
http://www.cctv.com
"
,
""
,
"
width=400,height=240,top=
"
+
(screen.availHeight
-
240
)
/
2
+
"
,left=
"
+
(screen.availWidth
-
400
)
/
2
);
</
script
>
============
<
html
>
<
head
>
<
script
language
="LiveScript"
>
function
WinOpen()
{
msg
=
open(
""
,
"
DisplayWindow
"
,
"
toolbar=no,directories=no,menubar=no
"
);
msg.document.write(
"
<HEAD><TITLE>哈 罗!</TITLE></HEAD>
"
);
msg.document.write(
"
<CENTER><H1>酷 毙 了!</H1><h2>这 是<B>javascript</B>所 开 的 视 窗!</h2></CENTER>
"
);
}
</
script
>
</
head
>
<
body
>
<
form
>
<
input
type
="button"
name
="Button1"
value
="Push me"
onclick
="WinOpen()"
>
</
form
>
</
body
>
</
html
>
==============
一、在下面的代码中,你只要单击打开一个窗口,即可链接到赛迪网。而当你想关闭时,只要单击一下即可关闭刚才打开的窗口。
代码如下:
<
SCRIPT
language
="javascript"
>
<
!
--
function
openclk()
{
another
=
open('http:
//
www.ccidnet.com','NewWindow');
}
function
closeclk()
{
another.close();
}
//
-->
</
SCRIPT
>
<
FORM
>
<
INPUT
TYPE
="BUTTON"
NAME
="open"
value
="打开一个窗口"
onClick
="openclk()"
>
<
BR
>
<
INPUT
TYPE
="BUTTON"
NAME
="close"
value
="关闭这个窗口"
onClick
="closeclk()"
>
</
FORM
>
二、上面的代码也太静了,为何不来点动感呢?如果能给页面来个降落效果那该多好啊!
代码如下:
<
script
>
function
drop(n)
{
if
(self.moveBy)
{
self.moveBy (
0
,
-
900
);
for
(i
=
n; i
>
0
; i
--
)
{
self.moveBy(
0
,
3
);
}
for
(j
=
8
; j
>
0
; j
--
)
{
self.moveBy(
0
,j);
self.moveBy(j,
0
);
self.moveBy(
0
,
-
j);
self.moveBy(
-
j,
0
);
}
}
}
</
script
>
<
body
onLoad
="drop(300)"
>
三、讨厌很多网站总是按照默认窗口打开,如果你能随心所欲控制打开的窗口那该多好。
代码如下:
<
SCRIPT
LANGUAGE
="javascript"
>
<
!
--
Begin
function
popupPage(l, t, w, h)
{
var
windowprops
=
"
location=no,scrollbars=no,menubars=no,toolbars=no,resizable=yes
"
+
"
,left=
"
+
l
+
"
,top=
"
+
t
+
"
,width=
"
+
w
+
"
,height=
"
+
h;
var
URL
=
"
http://www.80cn.com
"
;
popup
=
window.open(URL,
"
MenuPopup
"
,windowprops);
}
//
End -->
</
script
>
<
table
>
<
tr
>
<
td
>
<
form
name
=popupform
>
<
pre
>
打开页面的参数
<
br
>
离开左边的距离:
<
input
type
=text
name
=left
size
=2
maxlength
=4
>
pixels
离开右边的距离:
<
input
type
=text
name
=top
size
=2
maxlength
=4
>
pixels
窗口的宽度:
<
input
type
=text
name
=width
size
=2
maxlength
=4
>
pixels
窗口的高度:
<
input
type
=text
name
=height
size
=2
maxlength
=4
>
pixels
</
pre
>
<
center
>
<
input
type
=button
value
="打开这个窗口!"
onClick
="popupPage(this.form.left.value, this.form.top.value, this.form.width.value, this.form.height.value)"
>
</
center
>
</
form
>
</
td
>
</
tr
>
</
table
>
你只要在相对应的对话框中输入一个数值即可,将要打开的页面的窗口控制得很好。
44、页面的打开移动
把如下代码加入
<
body
>
区域中
<
SCRIPT
LANGUAGE
="javascript"
>
<!--
Begin
for
(t
=
2
; t
>
0
; t
--
)
{
for
(x
=
20
; x
>
0
; x
--
)
{
for
(y
=
10
; y
>
0
; y
--
)
{
parent.moveBy(
0
,
-
x);
}
}
for
(x
=
20
; x
>
0
; x
--
)
{
for
(y
=
10
; y
>
0
; y
--
)
{
parent.moveBy(
0
,x);
}
}
for
(x
=
20
; x
>
0
; x
--
)
{
for
(y
=
10
; y
>
0
; y
--
)
{
parent.moveBy(x,
0
);
}
}
for
(x
=
20
; x
>
0
; x
--
)
{
for
(y
=
10
; y
>
0
; y
--
)
{
parent.moveBy(
-
x,
0
);
}
}
}
//
-->
//
End -->
</
script
>
45、显示个人客户端机器的日期和时间
<
script
language
="LiveScript"
>
<!--
Hiding
today
=
new
Date()
document.write(
"
现 在 时 间 是:
"
,today.getHours(),
"
:
"
,today.getMinutes())
document.write(
"
<br>今 天 日 期 为:
"
, today.getMonth()
+
1
,
"
/
"
,today.getDate(),
"
/
"
,today.getYear());
//
end hiding contents -->
</
script
>
46、自动的为你每次产生最後修改的日期了:
<
html
>
<
body
>
This is a simple HTML- page.
<
br
>
Last changes:
<
script
language
="LiveScript"
>
<!--
hide script from old browsers
document.write(document.lastModified)
//
end hiding contents -->
</
script
>
</
body
>
</
html
>
47、不能为空和邮件地址的约束:
<
html
>
<
head
>
<
script
language
="javascript"
>
<!--
Hide
function
test1(form)
{
if
(form.text1.value
==
""
)
alert(
"
您 没 写 上 任 何 东 西, 请 再 输 入 一 次 !
"
)
else
{
alert(
"
嗨
"
+
form.text1.value
+
"
! 您 已 输 入 完 成 !
"
);
}
}
function
test2(form)
{
if
(form.text2.value
==
""
||
form.text2.value.indexOf('@',
0
)
==
-
1
)
alert(
"
这 不 是 正 确 的 e-mail address! 请 再 输 入 一 次 !
"
);
else
alert(
"
您 已 输 入 完 成 !
"
);
}
//
-->
</
script
>
</
head
>
<
body
>
<
form
name
="first"
>
Enter your name:
<
br
>
<
input
type
="text"
name
="text1"
>
<
input
type
="button"
name
="button1"
value
="输 入 测 试"
onClick
="test1(this.form)"
>
<
P
>
Enter your e-mail address:
<
br
>
<
input
type
="text"
name
="text2"
>
<
input
type
="button"
name
="button2"
value
="输 入 测 试"
onClick
="test2(this.form)"
>
</
body
>
48、跑马灯
<
html
>
<
head
>
<
script
language
="javascript"
>
<!--
Hide
var
scrtxt
=
"
怎麽样 ! 很酷吧 ! 您也可以试试.
"
+
"
Here goes your message the visitors to your page will
"
+
"
look at for hours in pure fascination
"
;
var
lentxt
=
scrtxt.length;
var
width
=
100
;
var
pos
=
1
-
width;
function
scroll()
{
pos
++
;
var
scroller
=
""
;
if
(pos
==
lentxt)
{
pos
=
1
-
width;
}
if
(pos
<
0
)
{
for
(
var
i
=
1
; i
<=
Math.abs(pos); i
++
)
{
scroller
=
scroller
+
"
"
;}
scroller
=
scroller
+
scrtxt.substring(
0
,width
-
i
+
1
);
}
else
{
scroller
=
scroller
+
scrtxt.substring(pos,width
+
pos);
}
window.status
=
scroller;
setTimeout(
"
scroll()
"
,
150
);
}
//
-->
</
script
>
</
head
>
<
body
onLoad
="scroll();return true;"
>
这里可显示您的网页 !
</
body
>
</
html
>
49、在网页中用按钮来控制前页,后页和主页的显示。
<
html
>
<
body
>
<
FORM
NAME
="buttonbar"
>
<
INPUT
TYPE
="button"
VALUE
="Back"
onClick
="history.back()"
>
<
INPUT
TYPE
="button"
VALUE
="JS- Home"
onClick
="location='script.html'"
>
<
INPUT
TYPE
="button"
VALUE
="Next"
onCLick
="history.forward()"
>
</
FORM
>
</
body
>
</
html
>
50、查看某网址的源代码
把如下代码加入
<
body
>
区域中
<
SCRIPT
>
function
add()
{
var
ress
=
document.forms[
0
].luxiaoqing.value
window.location
=
"
view-source:
"
+
ress;
}
</
SCRIPT
>
输入要查看源代码的URL地址:
<
FORM
><
input
type
="text"
name
="luxiaoqing"
size
=40
value
="http://"
></
FORM
>
<
FORM
><
br
>
<
INPUT
type
="button"
value
="查看源代码"
onClick
=add()
>
</
FORM
>
51、title显示日期
把如下代码加入
<
body
>
区域中:
<
script
language
="javascript1.2"
>
<!--
hide
var
isnMonth
=
new
Array(
"
1月
"
,
"
2月
"
,
"
3月
"
,
"
4月
"
,
"
5月
"
,
"
6月
"
,
"
7月
"
,
"
8月
"
,
"
9月
"
,
"
10月
"
,
"
11月
"
,
"
12月
"
);
var
isnDay
=
new
Array(
"
星期日
"
,
"
星期一
"
,
"
星期二
"
,
"
星期三
"
,
"
星期四
"
,
"
星期五
"
,
"
星期六
"
,
"
星期日
"
);
today
=
new
Date () ;
Year
=
today.getYear();
Date
=
today.getDate();
if
(document.all)
document.title
=
"
今天是:
"
+
Year
+
"
年
"
+
isnMonth[today.getMonth()]
+
Date
+
"
日
"
+
isnDay[today.getDay()]
//
--hide-->
</
script
>
52、显示所有链接
把如下代码加入
<
body
>
区域中
<
script
language
="javascript1.2"
>
<!--
function
extractlinks()
{
var
links
=
document.all.tags(
"
A
"
)
var
total
=
links.length
var
win2
=
window.open(
""
,
""
,
"
menubar,scrollbars,toolbar
"
)
win2.document.write(
"
<font size='2'>一共有
"
+
total
+
"
个连接</font><br>
"
)
for
(i
=
0
;i
<
total;i
++
)
{
win2.document.write(
"
<font size='2'>
"
+
links.outerHTML
+
"
</font><br>
"
)
}
}
//
-->
</
script
>
<
input
type
="button"
onClick
="extractlinks()"
value
="显示所有的连接"
>
53、回车键换行
把如下代码加入
<
body
>
区域中
<
script
type
="text/javascript"
>
function
handleEnter (field, event)
{
var
keyCode
=
event.keyCode
?
event.keyCode : event.which
?
event.which : event.charCode;
if
(keyCode
==
13
)
{
var
i;
for
(i
=
0
; i
<
field.form.elements.length; i
++
)
if
(field
==
field.form.elements)
break
;
i
=
(i
+
1
)
%
field.form.elements.length;
field.form.elements.focus();
return
false
;
}
else
return
true
;
}
</
script
>
<
form
>
<
input
type
="text"
onkeypress
="return handleEnter(this, event)"
><
br
>
<
input
type
="text"
onkeypress
="return handleEnter(this, event)"
><
br
>
<
textarea
>
回车换行
54、确认后提交
把如下代码加入
<
body
>
区域中
<
SCRIPT
LANGUAGE
="javascript"
>
<!--
function
msg()
{
if
(confirm(
"
你确认要提交嘛!
"
))
document.lnman.submit()
}
//
-->
</
SCRIPT
>
<
form
name
="lnman"
method
="post"
action
=""
>
<
p
>
<
input
type
="text"
name
="textfield"
value
="确认后提交"
>
</
p
>
<
p
>
<
input
type
="button"
name
="Submit"
value
="提交"
onclick
="msg();"
>
</
p
>
</
form
>
55、改变表格的内容
把如下代码加入
<
body
>
区域中
<
script
language
=javascript
>
var
arr
=
new
Array()
arr[
0
]
=
"
一一一一一
"
;
arr[
1
]
=
"
二二二二二
"
;
arr[
2
]
=
"
三三三三三
"
;
</
script
>
<
select
onchange
="zz.cells[this.selectedIndex].innerHTML=arr[this.selectedIndex]"
>
<
option
value
=a
>
改变第一格
</
option
>
<
option
value
=a
>
改变第二格
</
option
>
<
option
value
=a
>
改变第三格
</
option
>
</
select
>
<
table
id
=zz
border
=1
>
<
tr
height
=20
>
<
td
width
=150
>
第一格
</
td
>
<
td
width
=150
>
第二格
</
td
>
<
td
width
=150
>
第三格
</
td
>
</
tr
>
</
table
>
<
script language
=
"
JavaScript
"
>
<!--
var
d1
=
new
Date();
var
d2
=
new
Date();
d2.setMonth(
0
);
d2.setDate(
1
);
var
rq
=
d1
-
d2;
var
s1
=
Math.ceil(rq
/
(
24
*
60
*
60
*
1000
));
var
s2
=
Math.ceil(s1
/
7
);
alert(
"
今天是本年第
"
+
s1
+
"
天,第
"
+
s2
+
"
周
"
);
//
-->
</
script
>
private
int
WeekOfYear(
string
date)
{
DateTime curDay
=
Convert.ToDateTime(date);
int
firstdayofweek
=
Convert.ToInt32(Convert.ToDateTime(curDay.Year.ToString()
+
"
-
"
+
"
1-1
"
).DayOfWeek);
int
days
=
curDay.DayOfYear;
int
daysOutOneWeek
=
days
-
(
7
-
firstdayofweek);
if
(daysOutOneWeek
<=
0
)
{
return
1
;
}
else
{
int
weeks
=
daysOutOneWeek
/
7
;
if
(daysOutOneWeek
%
7
!=
0
)
weeks
++
;
return
weeks
+
1
;
}
}
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