40种网站常用Javascript能力


1. οncοntextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
<table border οncοntextmenu=return(false)><td>no</table> 可用于Table

2. <body onselectstart="return false"> 打消选取、防备复制

3. οnpaste="return false" 禁绝粘贴

4. οncοpy="return false;" oncut="return false;" 防备复制

5. <link href="http://blog.csdn.net/kof820/article/details/1514613/favicon.ico"> IE地点栏前换本钱身的图标

6. <link href="http://blog.csdn.net/kof820/article/details/1514613/favicon.ico"> 可以在保藏夹中显示出你的图标

7. <input> 封锁输入法

8. 永远城市带着框架
<script language="JavaScript"><!--
if (window == top)top.location.href = "frames.htm"; //frames.htm为框架网页
// --></script>

9. 防备被人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="http://blog.csdn.net/blog/*.html>";</iframe></noscript>

11. <input type=button value=查察网页源代码
οnclick="window.location = "view-source:"+ "http://www.williamlong.info"">

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)
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,"获得控件的位置"
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" οnfοcus="cc()">

15. 判定上一页的来历
javascript:
document.referrer

 16. 最小化、最大化、封锁窗口
<object id=hh1 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param value="Minimize"></object>
<object id=hh2 classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param value="Maximize"></object>
<OBJECT id=hh3 classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM VALUE="Close"></OBJECT>
<input type=button value=最小化 οnclick=hh1.Click()>
<input type=button value=最大化 οnclick=hh2.Click()>
<input type=button value=封锁 οnclick=hh3.Click()>
本例合用于IE

17.屏蔽成果键Shift,Alt,Ctrl
<script>
function look(){
if(event.shiftKey)
alert("克制按Shift键!"); //可以换成ALT CTRL
}
document.οnkeydοwn=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">
可能<META HTTP-EQUIV="expires" CONTENT="0">

19.奈何让表单没有凹凸感?
<input type=text>

<input type=text></textarea>

20.<div><span>&<layer>的区别?
<div>(division)用来界说大段的页面元素,会发生转行
<span>用来界说同一行内的元素,跟<div>的独一区别是不发生转行
<layer>是ns的标志,ie不支持,相当于<div>

21.让弹出窗口老是在最上面:
<body οnblur="this.focus();">

22.不要转动条?
让竖条没有:
<body>
</body>
让横条没有:
<body>
</body>
两个都去掉?更简朴了
<body scroll="no">
</body>

23.奈何去掉图片链接点击后,图片周围的虚线?
<a href="#" onFocus="this.blur()"><img src="http://blog.csdn.net/blog/logo.jpg" border=0></a>

24.电子邮件处理惩罚提交表单
<form 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巨细
<body οnlοad="top.resizeTo(300,200);">
打开页面的位置<body οnlοad="top.moveBy(300,200);">

27.在页面中如何插手不是满铺的配景图片,拉动页面时配景图不动
<STYLE>
body
{background-image:url(/blog/logo.gif); background-repeat:no-repeat;
background-position:center;background-attachment: fixed}
</STYLE>

28. 查抄一段字符串是否全由数字构成
<script language="Javascript"><!--
function checkNum(str){return str.match(//D/)==null}
alert(checkNum("1232142141"))
alert(checkNum("123214214a1"))
// --></script>

29. 得到一个窗口的巨细
document.body.clientWidth; document.body.clientHeight

30. 怎么判定是否是字符
if (/[^/x00-/xff]/g.test(s)) alert("含有汉字");
else alert("全是字符");

31.TEXTAREA自适应文字行数的几多
<textarea rows=1 name=s1 cols=27 onpropertychange="this.style.posHeight=this.scrollHeight">
</textarea>

32. 日期减去天数便是第二个日期
<script language=Javascript>
function cc(dd,dadd)
{
//可以加上错误处理惩罚
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 type="radio" value="style" checked>Style
<INPUT type="radio" value="barcode">Barcode
<INPUT type="button" value="check" οnclick="checkme()">
</BODY></HTML>

34.剧本永不堕落
<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 οnkeydοwn="if(event.keyCode==13)event.keyCode=9">

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