Javascript技巧大集合

心已赠人 2022-08-11 04:30 217阅读 0赞

1.文本框焦点问题  
onBlur:当失去输入焦点后产生该事件  
onFocus:当输入获得焦点后，产生该文件  
Onchange:当文字值改变时，产生该事件  
Onselect:当文字加亮后，产生该文件

<input type="text" value="郭强" οnfοcus="if(value=='郭强') \{value=''\}" οnblur="if  
(value=='') \{value='郭强'\}">点击时文字消失，失去焦点时文字再出现

2.网页按钮的特殊颜色  
<input type=button name="Submit1" value="郭强" size=10 class=s02

style="background-color:rgb(235,207,22)">

3.鼠标移入移出时颜色变化  
<input type="submit" value="找吧" name="B1" onMouseOut=this.style.color="blue"

onMouseOver=this.style.color="red"  class="button">

4.平面按钮  
<input type=submit value=订阅 style="border:1px solid :\#666666; height:17px; width:25pt; font-size:9pt;

BACKGROUND-COLOR: \#E8E8FF; color:\#666666" name="submit">

5.按钮颜色变化  
<input type=text name="nick"  style="border:1px solid \#666666;  font-size:9pt;  height:17px;

BACKGROUND-COLOR: \#F4F4FF; color:\#ff6600" size="15" maxlength="16">

6.平面输入框  
<input type="text" name="T1" size="20" style="border-style: solid; border-width: 1">

7.使窗口变成指定的大小  
<script>  
window.resizeTo(300,283);  
</script>

8.使文字上下滚动  
<marquee direction=up scrollamount=1 scrolldelay=100 οnmοuseοver='this.stop()' οnmοuseοut='this.start()'

height=60>  
  
<tr>  
<td>  
共和国  
</table>          
</marquee>

9.状态栏显示该页状态  
<base οnmοuseοver="window.status='网站建设 [http://www.webmake.cn/'][http_www.webmake.cn] ;return true">

10.可以点击文字实现radio选项的选定  
<br>  
&nbsp;&nbsp;&nbsp;&nbsp;<input type="radio" name="regtype" value="A03" id="A03">  
<label for="A03"> 情侣 : 一次注册两个帐户</label> <br>

11.可以在文字域的font写onclick事件

12.打印</a>打印网页  
<a href=http://www.mscto.com/JavaScript/'javascript:window.print ()'>

13.线型输入框  
<input type="text" name="key"  size="12" value="关键字" onFocus=this.select() onMouseOver=this.focus()

class="line">

14.显示文档最后修改日期  
<script language=javascript>  
function hi(str)  
\{  
 document.write(document.lastModified)

alert("hi"+str+"!")  
\}  
</script>

15.可以在鼠标移到文字上时就触发事件  
<html>  
<head>  
<script language="LiveScript">  
<!-- Hiding

function hello() \{  
       alert("哈罗!");  
     \}  
</script>  
</head>  
<body>  
<a href=http://www.mscto.com/JavaScript/"" onMouseOver="hello()">link</a>  
</body>  
</html>

16.可以根据网页上的选项来确定页面颜色  
<HTML>  
<HEAD>  
 <TITLE>background.html</TITLE>  
</HEAD>  
<SCRIPT>  
<!--

function bgChange(selObj) \{  
 newColor = selObj.options\[selObj.selectedIndex\].text;  
 document.bgColor = newColor;  
 selObj.selectedIndex = -1;  
 \}

//-->  
</SCRIPT>  
<BODY STYLE="font-family:Arial">  
<B>Changing Background Colors</B>  
<BR>  
 <FORM>  
  <SELECT SIZE="8" onChange="bgChange(this);">  
  <OPTION>Red  
  <OPTION>Orange  
  <OPTION>Yellow  
  <OPTION>Green  
  <OPTION>Blue  
  <OPTION>Indigo  
  <OPTION>Violet  
  <OPTION>White  
 <OPTION>pink  
  </SELECT>  
 </FORM>  
</BODY>  
</HTML>  
17.将按钮的特征改变  
<style type="text/css">  
<!--  
.style1 \{ font-size: 12px; background: \#CCCCFF; border-width: thin thin thin thin; border-color: \#CCCCFF

\#CCCCCC \#CCCCCC \#CCCCFF\}  
.style2 \{ font-size: 12px; font-weight: bold; background: \#CCFFCC; border-width: thin medium medium thin;

border-color: \#CCFF99 \#999999 \#999999 \#CCFF99\}  
\-->  
</style>  
　　本例按钮的代码如下：  
<input type="submit" name="Submit" value="提 交" οnmοuseοver="this.className='style2'"

οnmοuseοut="this.className='style1'" class="style1">

18.改变按钮的图片.

60px; height: 22px\}  
\-->  
</style>  
　　本例的按钮代码如下：  
<input type="submit" name="Submit2" value="提 交" οnmοuseοver="this.className='style4'"

οnmοuseοut="this.className='style3'" class="style3">

19.打印页面  
<div align="center"><a class=content href="javascript:doPrint();">打印本稿</a></div>

20.可以直接写html语言  
document.write("");

21.改变下拉框的颜色  
<select name="classid"

onChange="changelocation(document.myform.classid.options\[document.myform.classid.selectedIndex\].value)"

size="1" style="color:\#008080;font-size: 9pt">

22.转至目标URL  
window.location="[http://guoguo][http_guoguo]"

23.传递该object的form  
UpdateSN('guoqiang99267',this.form)  
function UpdateSN(strValue,strForm)  
\{  
  strForm.SignInName.value = strValue;  
  return false;  
\}

24.文字标签  
<label for="AltName4"><input name="AltName" type="RADIO" tabindex="931"  id="AltName4"

>guoqiang99859</label>

25.layer2为组件的ID，可以控制组件是否可见  
document.all.item('Layer2').style.display = "block";  
document.all.item('Layer2').style.display = "none";//

26.将页面加入favorite中  
<script language=javascript>  
  
</script>//

27.过10秒自动关闭页面

< script language="JavaScript" >  
function closeit() \{  
setTimeout("self.close()"，10000)  
\}  
< /script >

28.可以比较字符的大小  
char=post.charAt(i);  
if(!('0'<=char&&char<='9'))

29.将字符转化为数字  
month = parseInt(char)

30.点击value非空的选项时转向指定连接  
 <select οnchange='if(this.value!="")window.open(this.value)' class="textinput">  
    <option selected>主办单位</option>  
    <option>-----------------</option>  
    <option value="[http://www.bjd.com.cn/][http_www.bjd.com.cn]">北京日报</option>  
    <option value="[http://www.ben.com.cn/][http_www.ben.com.cn]">北京晚报</option>  
</select>

31.改变背景颜色  
<td width=\* class=dp bgColor=\#FAFBFC οnmοuseοver="this.bgColor='\#FFFFFF';"

οnmοuseοut="this.bgColor='\#FAFBFC';">

32.改变文字输入框的背景颜色  
<style>  
.input2 \{background-image: url('../images/inputbg.gif');   font-size: 12px; background-color: \#D0DABB;border-top-width:1px; border-right-width: 1px; border-

bottom-width: 1px; border-left-width: 1px\}  
</style>  
<input name=content type=text size="47" class="input2" maxlength="50">

33.改变水平线的特征  
<hr size="0" noshade color="\#C0C0C0">

34.传递参数的方式  
<a href="vote.asp?Curpage=8&id=3488">8</a>

35.页内跳转  
<a href="\#1">1</a>  
<a href="\#2">2</a>  
<a href="\#3">3</a>  
<a href="\#4">4</a>  
<a href="\#5">5</a>  
<a href="\#6">6</a>  
<a href="\#7">7</a>  
<a name="1">dfdf</a>  
<a name="2">dfdf</a>//

36.两个按键一起按下  
if(event.ctrlKey && window.event.keyCode==13)//

37.刷新页面  
javascript:this.location.reload()//

38.将网页的按钮使能  
<SCRIPT LANGUAGE="JavaScript">  
function haha()  
\{  
 for(var i=0;i<document.form1.elements.length;i++)  
 \{  
  if(document.form1.elements\[i\].name.indexOf("bb")!=-1)  
   document.form1.elements\[i\].disabled=!document.form1.elements\[i\].disabled;  
 \}  
\}  
</SCRIPT>  
<BODY><form name=form1>  
<INPUT TYPE="button" NAME="aa "  value=cindy οnclick=haha()>  
<INPUT TYPE="button" NAME="bb " value=guoguo>  
<INPUT TYPE="button" NAME="bb " value=guoguo>

39.文字移动  
<marquee scrollamount=3 οnmοuseοver=this.stop(); οnmοuseοut=this.start();>

40.双击网页自动跑  
<SCRIPT LANGUAGE="JavaScript">

var currentpos,timer;  
function initialize()  
\{  
 timer=setInterval("scrollwindow()",1);  
\}  
function sc()  
\{  
 clearInterval(timer);  
\}  
function scrollwindow()  
\{  
 currentpos=document.body.scrollTop;  
 window.scroll(0,++currentpos);  
 if (currentpos != document.body.scrollTop)  
  sc();  
\}  
document.οnmοusedοwn=sc  
document.οndblclick=initialize  
</SCRIPT>//

41.后退  
<INPUT TYPE="button" οnclick=window.history.back() value=back>

42.前进  
<INPUT TYPE="button" οnclick=window.history.forward() value=forward>

43.刷新  
<INPUT TYPE="button" οnclick=document.location.reload() value=reload>

44.转向指定网页  
document.location="[http://ww][http_ww]"或者document.location.assign("[http://guoguo.com][http_guoguo.com]")

45.在网页上显示实时时间  
<SCRIPT LANGUAGE="JavaScript">  
var clock\_id;  
window.οnlοad=function()  
\{  
 clock\_id=setInterval("document.form1.txtclock.value=(new Date);",1000)  
\}  
</SCRIPT>//

46.可以下载文件  
document.location.href="目标文件"//

47.连接数据库  
import java.sql.\*;  
String myDBDriver="sun.jdbc.odbc.JdbcOdbcDriver";  
Class.forName(myDBDriver);  
Connection conn=DriverManager.getConnection("jdbc:odbc:firm","username","password");  
Statement stmt=conn.createStatement();  
ResultSet rs=stmt.executeQuery(sql);  
rs.getString("column1");//

48.可以直接在页面“div”内写下所需内容  
<INPUT TYPE="button" οnclick="a1.innerHTML='<font color=red>\*</font>'">  
<div id=a1></div>//

49.可以改变页面上的连接的格式，使其为双线  
<style>  
A:link \{text-decoration: none; color:\#0000FF; font-family: 宋体\}  
A:visited \{text-decoration: none; color: \#0000FF; font-family: 宋体\}  
A:hover \{text-decoration: underline overline; color: FF0000\}  
</style>  
<style>  
A:link \{text-decoration: none; color:\#0000FF; font-family: 宋体\}  
A:visited \{text-decoration: none; color: \#0000FF; font-family: 宋体\}  
A:hover \{text-decoration: underline overline line-through; color: FF0000\}  
TH\{FONT-SIZE: 9pt\}  
TD\{FONT-SIZE: 9pt\}  
body \{SCROLLBAR-FACE-COLOR: \#A9D46D; SCROLLBAR-HIGHLIGHT-COLOR: \#e7e7e7;SCROLLBAR-SHADOW-COLOR:\#e7e7e7;

SCROLLBAR-3DLIGHT-COLOR: \#000000; LINE-HEIGHT: 15pt; SCROLLBAR-ARROW-COLOR: \#ffffff;

SCROLLBAR-TRACK-COLOR: \#e7e7e7;\}

INPUT\{BORDER-TOP-WIDTH: 1px; PADDING-RIGHT: 1px; PADDING-LEFT: 1px; BORDER-LEFT-WIDTH: 1px; FONT-SIZE:

9pt; BORDER-LEFT-COLOR: \#cccccc;  
BORDER-BOTTOM-WIDTH: 1px; BORDER-BOTTOM-COLOR: \#cccccc; PADDING-BOTTOM: 1px; BORDER-TOP-COLOR: \#cccccc;

PADDING-TOP: 1px; HEIGHT: 18px; BORDER-RIGHT-WIDTH: 1px; BORDER-RIGHT-COLOR: \#cccccc\}  
DIV,form ,OPTION,P,TD,BR\{ FONT-SIZE: 9pt\}

textarea, select \{border-width: 1; border-color: \#000000; background-color: \#efefef; font-family: 宋体;

font-size: 9pt; font-style: bold;\}  
.text \{ font-family: "宋体"; font-size: 9pt; color: \#003300; border: \#006600 solid; border-width: 1px 1px

1px 1px\}  
</style>完整的css

50.新建frame  
<a

href="javascript:newframe('http://www.163.net/help/a\_little/index.html','http://www.163.net/help/a\_little

/a\_13.html')"><img alt=帮助 border=0 src="[http://www.rdxx.com/Files/Pic/2007-9/13/JFCC87I9H8A63D7516.gif"></a][http_www.rdxx.com_Files_Pic_2007-9_13_JFCC87I9H8A63D7516.gif_a]>

51.向文件中写内容  
<%@ page import="java.io.\*" %>  
<%  
 String str = "print me";  
 //always give the path from root. This way it almost always works.  
 String nameOfTextFile = "/usr/anil/imp.txt";  
 try  
 \{  
  PrintWriter pw = new PrintWriter(new FileOutputStream(nameOfTextFile));  
  pw.println(str);  
  //clean up  
  pw.close();  
 \}  
 catch(IOException e)  
 \{  
  out.println(e.getMessage());  
 \}  
%>

52.先读文件再写文件  
<%@ page language = "java" %>  
<%@ page contentType = "text/html; charSet=gb2312" %>  
<%@ page import ="java.util.\*" %>  
<%@ page import ="java.lang.\*" %>  
<%@ page import ="javax.servlet.\*" %>  
<%@ page import ="javax.servlet.[js][]p.\*" %>  
<%@ page import ="javax.servlet.http.\*" %>  
<%@ page import="java.io.\*" %>  
eryrytry  
<%  
 int count=0;  
 FileInputStream fi =new FileInputStream ("count.txt");  
 ObjectInputStream si= new ObjectInputStream (fi);  
 count =si.readInt();  
 count++;  
 out.print(count);  
 si.close();

FileOutputStream fo =new FileOutputStream ("count.txt");

ObjectOutputStream so= new ObjectOutputStream (fo);  
 so.writeInt(count);  
 so.close();  
%>

53.直线型输入框  
<INPUT name=Password size=10 type=password style="border-left-width: 0; border-right-width: 0;

border-top-width: 0; border-bottom-style: solid; border-bottom-width: 1; background-color: \#9CEB9C">

54.可以将背景改为按钮性状，通过改变css改变属性  
<td width="65" align="center" bgcolor="\#E0E0E0" οnmοuseοver=this.className='mouseoverbt';

οnmοuseοut=this.className='mouseout';><a href=http://www.mscto.com/JavaScript/"tm.asp?classid=76"><font color="\#000000">录音笔</font></a></td>  
<style>  
.mouseoverbt  
\{  
 background-image: url([http://www.yongle.com.cn/img/btbgw64h20y.gif][http_www.yongle.com.cn_img_btbgw64h20y.gif]);  
 background-repeat: no-repeat;  
\}  
.mouseout  
\{  
 background-color: \#E0E0E0;  
\}  
</style>

55.同时按下CTRL和Q键

document.οnkeydοwn=function()  
\{  
if(event.ctrlKey&&event.keyCode==81)  
\{alert(1)\}  
\}//

56.以下是一个完整的显示hint的代码，其思想是当鼠标停留是将div中的内容显示在鼠标出，当鼠标移出后在将该div隐

藏掉  
\---------------------------------------------------------------------------------------------------------

\------------  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">  
<HTML>  
<style>  
\#hint\{  
 width:198px;  
 border:1px solid \#000000;  
 background:\#99ff33;  
 position:absolute;  
 z-index:9;  
 padding:6px;  
 line-height:17px;  
 text-align:left;  
 top: 1520px;  
\}  
</style>  
<SCRIPT LANGUAGE="JavaScript">  
  
</SCRIPT>  
<BODY>  
<text id=guoguo value=ga>  
<a href=http://www.mscto.com/JavaScript/041043806.html\# οnmοuseοver=showme() οnmοuseοut=hidme() οnmοusemοve=showme() son=hint>dfdfd</a>  
<div id=hint style="display:none"></div>  
</BODY>  
</HTML>  
\---------------------------------------------------------------------------------------------------------

\------------

57.弹出窗口  
方法一：<body οnlοad="openwen()"> 浏览器读页面时弹出窗口；  
方法二：<body οnunlοad="openwen()"> 浏览器离开页面时弹出窗口；

方法三：用一个连接调用：<a href=http://www.mscto.com/JavaScript/"\#" οnclick="openwin()">打开一个窗口</a>  
注意：使用的"\#"是虚连接。  
方法四：用一个按钮调用：<input type="button" οnclick="openwin()" value="打开窗口"> 何时装载script

58.动态改变字体的大小  
function doZoom(size)  
\{  
   document.getElementById('zoom').style.fontSize=size+'px'  
\}

function aa()  
\{  
   var newWin=window.open(url);  
   newWin.document.form1.text1.value=value1;  
\}改变弹出窗口上域的属性  
opener.document.form2.text2.value=value2;改变父窗口的域的值

59.判断是何种浏览器  
var name = navigator.appName;  
if (name == "Microsoft Internet Explorer")  
 alert("IE");  
else if (name == "Netscape")  
 alert("NS");//

60.vbsscript确定框  
<script language="VBScript">  
  
</script>//

61.复制内容到剪切板  
function JM\_cc(bb)  
\{  
    var ob=eval("document.form1."+bb);  
    ob.select();  
    js=ob.createTextRange();  
    js.execCommand("Copy");  
\}//

62.java中建立数据库连接取数据  
public void init()  
\{  
 String url="jdbc:odbc:javadata";  
 try  
 \{  
  Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");  
  Connection con=DriverManager.getConnection(url,"sa","");//mssql database user SA and password  
  DatabaseMetaData dma=con.getMetaData();  
  System.out.println("Connect to"+dma.getURL());  
  System.out.println(";Driver "+dma.getDriverName());  
  System.out.println(";Version "+dma.getDriverVersion());  
  System.out.println("");  
  Statement stmt=con.createStatement();

ResultSet rs=stmt.executeQuery("select \* from company.dbo.TB\_NAME where number=1");//Sql  
  rs.next();  
  String dispresult=rs.getString("name");  
  System.out.println(dispresult);// Instead,you can display it in Paint() or use AWT etc.  
  rs.close();  
  stmt.close();  
  con.close();  
 \}  
 catch(SQLException ex)  
 \{  
  System.out.println("!!!SQL Exception !!!");  
  while(ex!=null)  
  \{  
   System.out.println("SQLState:"+ex.getSQLState());  
   System.out.println("Message:"+ex.getMessage());  
   System.out.println("Vendor:"+ex.getErrorCode());  
   ex=ex.getNextException();  
   System.out.println("");  
  \}  
\}  
 catch(java.lang.Exception ex)  
 \{  
  ex.printStackTrace();  
 \}  
\}//

63.最小化窗口  
window.blur()//

64.文档的路径  
document.URL//

65.定时执行某段程序  
setTimeout("change\_color()",600);

66.设置为主页  
function makeHome()\{  
  netscape.security.PrivilegeManager.enablePrivilege("UniversalPreferencesWrite");  
  navigator.preference("browser.startup.homepage", location.href);  
\}//

67.设置为收藏  
function addFav()\{  
  if(ie)  
    window.external.AddFavorite(location.href,'WWW.OGRISH.COM : GROTESQUE MOVIES AND PICTURES');  
  if(ns)  
    alert("Thanks for the bookmark!/n/nNetscape users click OK then press CTRL-D");  
\}//

68.判断cookie是否可用  
navigator.cookieEnabled;//

69.显示有模式的有页面的弹出窗口  
function setbgcolor\_onclick()  
\{  
 var color = showModalDialog("/mailpage/compose/colorsel.html",0,"help=0");  
 if (color != null)  
 \{  
  document.compose.bgcolor.value = color;  
 \}  
\}//

70.截取小数点后两位  
var a=3454545.4454545;  
alert(a.toFixed(2));//

71.禁止选择页面上的文字来拷贝  
<script>  
function noEffect() \{  
  with (event) \{  
    returnValue = false;  
    cancelBubble = true;  
  \}  
  return;  
\}  
</script>  
<body onselectstart="noEffect()" οncοntextmenu="noEffect()">//

72.屏蔽右键菜单  
οncοntextmenu="event.returnValue = false"//

73.事件禁止起泡  
event.cancelBubble = true//

74.禁止在输入框打开输入法  
<input style="ime-mode: disabled">//

75.屏蔽汉字和空格  
<input name="txt"><input type="submit" onClick="alert(!/\[^ -\}\]|/s/.test(txt.value))">//

76.用javascript判断文件是否存在  
function Exists(filespec)  
\{  
 if (filespec)

\{  
  var fso;  
  fso = new ActiveXObject("Scripting.FileSystemObject");  
  alert(fso.FileExists(filespec));  
 \}  
\}  
选择图片 <input type=file name=f1><p>  
<input type="submit" onClick="Exists(f1.value)">//

77.获得当前的文本框选中的文字  
<input οnmοuseup="alert(document.selection.createRange().text)" value=123>//

78.跳转至目标页面，同时不可返回  
<a href="javascript:location.replace('http://www.sohu.com/')">sohu.com</a>//

79.获得当前的行是表格的第几行  
<script>  
function getrow(obj)  
\{  
   if(event.srcElement.tagName=="TD")\{  
   curRow=event.srcElement.parentElement;  
   alert("这是第"+(curRow.rowIndex+1)+"行");

\}  
\}  
</script>

<tr>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
  </tr>  
  <tr>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
    <td width="20%">　</td>  
  </tr>  
</table>//  
80.删除表格某行，xx表示某行，下标从0开始计算  
document.all.myTable.deleteRow(xx)//

81.动态的向表格中添加行  
<table id="t1" border="1">  
</table>  
<script language="JavaScript">  
function add()  
\{  
   t1.insertRow().insertCell().innerHTML = '<input name="test'+t1.rows.length+'">';  
\}//

82.event.x,event.clientX,event.offsetX区别：  
x:设置或者是得到鼠标相对于目标事件的父元素的外边界在x坐标上的位置。 clientX:相对于客户区域的x坐标位置，不

包括滚动条，就是正文区域。 offsetx：设置或者是得到鼠标相对于目标事件的父元素的内边界在x坐标上的位置。  
screenX:相对于用户屏幕。

83.显示是鼠标按钮的哪个  
<body onMouseDown="alert(event.button)">点Mouse看看//

84.打开C盘  
<form action="file:///c|/"><input type="submit" value="c:/ drive"></form>//  
   
85.当前屏幕的分辨率  
screen.width、screen.height//

86.设置表格中的内容  
tbl.rows\[0\].cells\[1\].innerText=document.form.text1.value;//

87.本地快捷键  
<p><a href="file:/::\{208D2C60-3AEA-1069-A2D7-08002B30309D\}" target="\_blank">网上邻居</a></p>  
<p><a href="file:/::\{20D04FE0-3AEA-1069-A2D8-08002B30309D\}" target="\_blank">我的电脑</a></p>  
<p><a href="file:/::\{450D8FBA-AD25-11D0-98A8-0800361B1103\}" target="\_blank">我的文档</a></p>  
<p><a href="file:/::\{645FF040-5081-101B-9F08-00AA002F954E\}" target="\_blank">回收站</a></p>  
<p><a href="file:///::\{20D04FE0-3AEA-1069-A2D8-08002B30309D\}/::\{21EC2020-3AEA-1069-A2DD-08002B30309D\}" target="\_blank">控制面板</a></p>  
<p><a href="file:/::\{7007ACC7-3202-11D1-AAD2-00805FC1270E\}">拨号网络</a>(windows 2000)</p>

88.IE菜单  
<button οnclick="min.Click()"><font face="webdings">0</font></button>//改变按钮上的图片  
<input type=button  οnclick="document.execCommand('CreateLink','true','true')"> //创建新连接  
<input type=button  οnclick="document.execCommand('print','true','true')"> //打印  
<input type=button  οnclick="document.execCommand('saveas','true','网站制作.htm')">//另存为htm  
<input type=button  οnclick="document.execCommand('saveas','true','网站制作.txt')">//另存为txt  
document.execCommand("SaveAs")//保存为  
document.execCommand('undo')//撤销上一次操作

89.web对话框  
<SCRIPT>  
var contents='<style>body,td\{font:menu\}img\{cursor:hand\}</style>';  
contents+='<title>你要关闭我吗</title>';  
contents+='<body bgcolor=menu>';  
contents+='<table width=100% height=100% border=0>';  
contents+='<tr><td align=center>';  
contents+='你要关闭我吗？<br>';  
contents+='<img src=http://www.mscto.com/JavaScript/"http:/www.rdxx.com/Files/Pic/2007-9/13/EEICHAIE93CF2EB5BJ.gif" οnclick=self.close() alt="...关闭">';  
contents+='<img src=http://www.mscto.com/JavaScript/"http:/www.rdxx.com/Files/Pic/2007-9/13/H7ED75CKB901DA5EH4.gif" οnclick=self.close() alt="全是关闭">';

contents+='</td></tr></table>';  
showModalDialog("about:"+contents+"","","dialogHeight:50px;dialogWidth:250px;help:no;status:no")  
document.write(contents);  
</SCRIPT>//  
90.取第x,y的值  
<button οnclick="t1.rows\[x\].cells\[y\].innerText='guoguo'"></button>//

91.向新打开的网页上写内容  
newwin=window.open('about:blank','','top=10');  
newwin.document.write('');//

93.返回  
javascript:history.go(-2);//

94.将页面上选中的内容复制到剪贴板  
abcdefg  
<input type='button'

οnclick="window.clipboardData.setData('text',document.selection.createRange().text);" value='复制页面选中

的字符'>//  
95.将页面上选中的内容复制到剪贴板  
<INPUT TYPE="text" NAME="">kjhkjhkhkj<INPUT TYPE="button" οnclick="document.execCommand('Copy', 'false',

null);">

96.鼠标移到下拉框时自动全部打开  
<select οnmοuseοver="javascript:this.size=this.length" οnmοuseοut="javascript:this.size=1"></select>//

97.获得本机的文件  
var fso = new ActiveXObject("Scripting.FileSystemObject");  
var f1 = fso.GetFile("C://bsitcdata//ejbhome.xml");  
alert("File last modified: " + f1.DateLastModified); //

98.判断客户端是否是IE浏览器  
因为 document.all 是 IE 的特有属性，所以通常用这个方法来判断客户端是否是IE浏览器 ,document.all?1:0;

99.创建新的下拉框选项  
new Option(text,value)这样的函数//

100.在页面上画柱状图  
<STYLE>  
td\{font-size:12px\}  
body\{font-size:12px\}  
v/:\*\{behavior:url(\#default\#VML);\} //这里声明了v作为VML公用变量  
</STYLE>  
<SCRIPT LANGUAGE="JavaScript">  
mathstr=12;  
document.write ("<v:rect fillcolor='red'

style='width:20;color:navy;height:"+5000/(1000/mathstr)+"'><br>&nbsp;%"+mathstr+"<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>")  
</SCRIPT>  
<v:rect fillcolor='red' style='width:20;color:navy;height:200'><br>%12<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>  
<v:rect fillcolor='yellow' style='width:20;color:navy;height:100'><br>%12<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>//

101.饼图  
<style>  
v/:\*     \{ behavior: url(\#default\#VML) \}  
o/:\*     \{ behavior: url(\#default\#VML) \}  
.shape    \{ behavior: url(\#default\#VML) \}  
</style>  
<script language="javascript">  
function show(pie)  
\{  
pie.strokecolor=pie.fillcolor;  
pie.strokeweight=10;  
div1.innerHTML="<font size=2 color=red> " + pie.id +"</font> <font size=2>" + pie.title + "</font>";  
\}  
function hide(pie)  
\{  
pie.strokecolor="white";  
pie.strokeweight=1;  
div1.innerHTML="";  
\}  
</script>  
</head>  
<body>  
<v:group style='width: 5cm; height: 5cm' coordorigin='0,0' coordsize='250,250'>  
<v:shape id='asp技术' style='width:10;height:10;top:10;left:0' title='得票数:6 比例:40.00%'