Javascript中最常用的55个经典技巧
1. ōncontextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
[|B/[^-\;xa0<table border ōncontextmenu=return(false)><td>no</table> 可用于Table51Testing软件测试网,[`!a@/G/}*Q
:\$C;_ Dk(mg02. <body ōnselectstart="return false"> 取消选取、防止复制51Testing软件测试网5{5W e5j'_{
51Testing软件测试网$GT+J8SonJ6t8i*l3. ōnpaste="return false" 不准粘贴
tTu"r#f0%]2NxAla!p04. ōncopy="return false;" ōncut="return false;" 防止复制51Testing软件测试网"]s@/|f'A c({u![
51Testing软件测试网;UF;~o}(@JS5. <link rel="Shortcut Icon" href="favicon.ico"> IE地址栏前换成自己的图标51Testing软件测试网6X)\ b&N*\
H!zs |f!x-H!d06. <link rel="Bookmark" href="favicon.ico"> 可以在收藏夹中显示出你的图标
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7. <input style="ime-mode:disabled"> 关闭输入法51Testing软件测试网#c1x}1u3|3]w
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8. 永远都会带着框架
X,`ox)zuT0<scrīpt language="Javascrīpt"><!--51Testing软件测试网9x$i'DT:S
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if (window == top)top.location.href = "frames.htm"; //frames.htm为框架网页
iE.Wa#Lqm!U0// --></scrīpt>
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9. 防止被人frame51Testing软件测试网2LYW7|+S)v3{.xof
<scrīpt LANGUAGE=JAVAscrīpt><!--
QPJT;}#J0if (top.location != self.location)top.location=self.location;
/P.R-G0Mo c5s0// --></scrīpt>
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RE3o2s_010. 网页将不能被另存为51Testing软件测试网b]5d"[k!I
<noscrīpt><*** src="/*.html>";</***></noscrīpt>51Testing软件测试网2wr:h[t*_$Ag%B)K2N
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11. <input type=button value="/查看网页源代码51Testing软件测试网'|I{geQ-U(b
onclick="window.location = "view-source:"+ "http://www.pconline.com.cn"">51Testing软件测试网DYb)K,iGN
12.删除时确认
Q!FGD"z-e7x(T;Q0<a href=""javascrīpt :if(confirm("确实要删除吗?"))location="boos.asp?&areyou=删除&page=1"">删除</a>
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13. 取得控件的绝对位置
ME|Uf]A:O-la%h0//Javascrīpt51Testing软件测试网"g9^#B&L-]%d
<scrīpt language="Javascrīpt">
v2z[6v{U$\0function getIE(e){51Testing软件测试网p?%c%MC.`"L1Uk
var t=e.offsetTop;51Testing软件测试网L_"t? G
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var l=e.offsetLeft;
t4o"i9~D0while(e=e.offsetParent){
-W w:_\-S0S4FT6t_0t+=e.offsetTop;51Testing软件测试网9^G1JFr%C6BeN
l+=e.offsetLeft;51Testing软件测试网?%OPVx C#?,_
}51Testing软件测试网
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alert("top="+t+"/nleft="+l);
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</scrīpt>
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c9|&A{V0//VBscrīpt51Testing软件测试网.mBM g"W6f!m
<scrīpt language="VBscrīpt"><!--51Testing软件测试网2n6~t(|-d|*h`^U
function getIE()51Testing软件测试网v;Q~ky-s,j_o$Q#Q
dim t,l,a,b51Testing软件测试网{&w,W't,d(q7R
set a=document.all.img1
6[(V L6}0V0t=document.all.img1.offsetTop
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\+KG0l=document.all.img1.offsetLeft
+g2m0~0whcp0while a.tagName<>"BODY"
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Z?o{v0set a = a.offsetParent51Testing软件测试网[*Tq \&B+vS
t=t+a.offsetTop
q.?I+?XO1MZJW*e0l=l+a.offsetLeft
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msgbox "top="&t&chr(13)&"left="&l,64,"得到控件的位置"51Testing软件测试网p/Lzu,YV
end function51Testing软件测试网_@6~C2Zb\H%XK
--></scrīpt>51Testing软件测试网
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14. 光标是停在文本框文字的最后51Testing软件测试网}
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<scrīpt language="javascrīpt">
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YU*At i2L0function cc()51Testing软件测试网;Y"spne,@P
{
"D)T1Dk1`u-~3OG0var e = event.srcElement;51Testing软件测试网+E"x2PQ ]a_0Z
var r =e.createTextRange();
$f G[@K~nm0r.moveStart("character",e.value.length);
K5LH;mkY+m0r.collapse(true);
`f+u5]$|Xy-q0r.select();
jP"|[0lf6D0}
t5xNo(JoI"zU|0</scrīpt>51Testing软件测试网#NrQ2hyG
<input type=text name=text1 value="123" ōnfocus="cc()">51Testing软件测试网/ri4N|aQ-SE
Z@0v1q8A,~$R015. 判断上一页的来源
jH$|:X6ed$eq#Y0javascrīpt :51Testing软件测试网pdKz:E*jjZb
document.referrer
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16. 最小化、最大化、关闭窗口51Testing软件测试网
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<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">51Testing软件测试网Z(rjhd#a
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<param name="Command" value="Minimize"></object>
s5ulgy}0<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">51Testing软件测试网s?)l'bq3~K
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<param name="Command" value="Maximize"></object>
us3wfZ1TI0<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
#@B6ZV8a)sq)Ak1h0<PARAM NAME="Command" value="/Close"></OBJECT>
0O%M(n7nAHG0<input type=button value="/最小化 ōnclick=hh1.Click()>
S9HEZ*hf7H1t$L0<input type=button value="/blog/最大化 ōnclick=hh2.Click()>
X-_ a(U_&rw0<input type=button value=关闭 ōnclick=hh3.Click()>51Testing软件测试网9}/|5M{'S1N}
本例适用于IE
51Testing软件测试网3nV0l.|;dy
17.屏蔽功能键Shift,Alt,Ctrl
-i*v0V#s%Q6\x0<scrīpt>51Testing软件测试网^7B6?r*u/NXF
function look(){51Testing软件测试网(ImD#Np5RMd/s
if(event.shiftKey)51Testing软件测试网(R/@N,A@r3w`| S
alert("禁止按Shift键!"); //可以换成ALT CTRL51Testing软件测试网e
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document.onkeydown=look;
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18. 网页不会被缓存
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M0<META HTTP-EQUIV="pragma" CONTENT="no-cache">
9\3bwo5K!Pr(B0<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">51Testing软件测试网"N.F1s.N1D
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<META HTTP-EQUIV="expires" CONTENT="Wed, 26 Feb 1997 08:21:57 GMT">
F-O3e h(_nK-a-Mr$r0或者<META HTTP-EQUIV="expires" CONTENT="0">51Testing软件测试网P%Y(@BL3`^z'a
51Testing软件测试网 Q.}Pb#^ z S+eG
19.怎样让表单没有凹凸感?
)b?!ZK,`o9k0<input type=text style="""border:1 solid #000000">51Testing软件测试网vh(I0g o
或
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R0<input type=text style="border-left:none; border-right:none; border-top:none; border-bottom:51Testing软件测试网5Mwh|*^
1 solid #000000"></textarea>
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20.<div><span>&<layer>的区别?
/C G-Xx{e3Wq0<div>(division)用来定义大段的页面元素,会产生转行
QRDo D];z9T0<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
zUH)d }A_0<layer>是ns的标记,ie不支持,相当于<div>51Testing软件测试网o^W5~.j4|jp'dsFv
1r~-Lm*S7f G/g021.让弹出窗口总是在最上面:51Testing软件测试网} JlKEo
<body ōnblur="this.focus();">51Testing软件测试网6BC4wWo
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Wkr*C*|&w022.不要滚动条?51Testing软件测试网9F8C1}Mx2wc _
让竖条没有:
$tL,UPW0<body style="overflow:scroll;overflow-y:hidden">51Testing软件测试网 AC(g8p:U+a+K
</body>
I"xwb6hRz%k0让横条没有:
"J&J0p_m*n0<body style="overflow:scroll;overflow-x:hidden">51Testing软件测试网
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</body>
#tO|E0tE^0两个都去掉?更简单了51Testing软件测试网XI;t[~-O{ ^-J
<body scroll="no">
Y`Y"Y8yssx0</body>
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23.怎样去掉图片链接点击后,图片周围的虚线?