51.向文件中寫內容
<%@ 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.先讀文件再寫文件
<%@ 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.jsp.*" %>
<%@ 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.直線型輸入框
<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.可以將背景改爲按鈕性狀，通過改變css改變屬性
<td width="65" align="center" bgcolor="#E0E0E0" οnmοuseοver=this.className='mouseoverbt';
οnmοuseοut=this.className='mouseout';><a href="tm.asp?classid=76"><font
color="#000000">錄音筆</font></a></td>
<style>
.mouseoverbt
{
background-image: url(/img/btbgw64h20y.gif);
background-repeat: no-repeat;
}
.mouseout
{
background-color: #E0E0E0;
}
</style>
55.同時按下CTRL和Q鍵
document.οnkeydοwn=function()
{
if(event.ctrlKey&&event.keyCode==81)
{alert(1)}
}//
56.以下是一個完整的顯示hint的代碼，其思想是當鼠標停留是將div中的內容顯示在鼠標出，當鼠標移出後在將該div隱
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">
<!--
function showme()
{
var oSon=window.document.getElementById("hint");
if (oSon==null) return;
with (oSon)
{
innerText=guoguo.value;
style.display="block";
style.pixelLeft=window.event.clientX+window.document.body.scrollLeft+6;
style.pixelTop=window.event.clientY+window.document.body.scrollTop+9;
}
}
function hidme()
{
var oSon=window.document.getElementById("hint");
if (oSon==null) return;
oSon.style.display="none";
}
//-->
</SCRIPT>
<BODY>
<text id=guoguo value=ga>
<a href=# οnmοuseοver=showme() οnmοuseοut=hidme() οnmοusemοve=showme() son=hint>dfdfd</a>
<div id=hint style="display:none"></div>
</BODY>
</HTML>
---------------------------------------------------------------------------------------------------------
------------
57.彈出窗口
方法一：<body οnlοad="openwen()"> 瀏覽器讀頁面時彈出窗口；
方法二：<body οnunlοad="openwen()"> 瀏覽器離開頁面時彈出窗口；
方法三：用一個連接調用：<a href="#" οnclick="openwin()">打開一個窗口</a>
注意：使用的"#"是虛連接。
方法四：用一個按鈕調用：<input type="button" οnclick="openwin()" value="打開窗口"> 何時裝載script
58.動態改變字體的大小
function doZoom(size)
{
document.getElementById('zoom').style.fontSize=size+'px'
}
function aa()
{
var newWin=window.open(url);
newWin.document.form1.text1.value=value1;
}改變彈出窗口上域的屬性
opener.document.form2.text2.value=value2;改變父窗口的域的值
59.判斷是何種瀏覽器
var name = navigator.appName;
if (name == "Microsoft Internet Explorer")
alert("IE");
else if (name == "Netscape")
alert("NS");//
60.vbsscript確定框
<script language="VBScript">
<!--
MsgBox "確定刪除嗎？", 4
//-->
</script>//
61.複製內容到剪切板
function JM_cc(bb)
{
var ob=eval("document.form1."+bb);
ob.select();
js=ob.createTextRange();
js.execCommand("Copy");
}//
62.java中建立數據庫連接取數據
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.文檔的路徑
document.URL//
65.定時執行某段程序
setTimeout("change_color()",600);
66.設置爲主頁
function makeHome(){
netscape.security.PrivilegeManager.enablePrivilege("UniversalPreferencesWrite");
navigator.preference("browser.startup.homepage", location.href);
}//
67.設置爲收藏
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.判斷cookie是否可用
navigator.cookieEnabled;//
69.顯示有模式的有頁面的彈出窗口
function setbgcolor_onclick()
{
var color = showModalDialog("/mailpage/compose/colorsel.html",0,"help=0");
if (color != null)
{
document.compose.bgcolor.value = color;
}
}//
70.截取小數點後兩位
var a=3454545.4454545;
alert(a.toFixed(2));//
71.禁止選擇頁面上的文字來拷貝
<script>
function noEffect() {
with (event) {
returnValue = false;
cancelBubble = true;
}
return;
}
</script>
<body onselectstart="noEffect()" οncοntextmenu="noEffect()">//
72.屏蔽右鍵菜單
οncοntextmenu="event.returnValue = false"//
73.事件禁止起泡
event.cancelBubble = true//
74.禁止在輸入框打開輸入法
<input style="ime-mode: disabled">//
75.屏蔽漢字和空格
<input name="txt"><input type="submit" onClick="alert(!/[^ -}]|/s/.test(txt.value))">//
76.用javascript判斷文件是否存在
function Exists(filespec)
{
if (filespec)
{
var fso;
fso = new ActiveXObject("Scripting.FileSystemObject");
alert(fso.FileExists(filespec));
}
}
選擇圖片 <input type=file name=f1><p>
<input type="submit" onClick="Exists(f1.value)">//
77.獲得當前的文本框選中的文字
<input οnmοuseup="alert(document.selection.createRange().text)" value=123>//
78.跳轉至目標頁面，同時不可返回
<a href="javascript:location.replace('http://www.sohu.com/')">sohu.com</a>//
79.獲得當前的行是表格的第幾行
<script>
function getrow(obj)
{
if(event.srcElement.tagName=="TD"){
curRow=event.srcElement.parentElement;
alert("這是第"+(curRow.rowIndex+1)+"行");
}
}
</script>
<table border="1" width="100%" οnclick=getrow(this)>
<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.刪除表格某行，xx表示某行，下標從0開始計算
document.all.myTable.deleteRow(xx)//
81.動態的向表格中添加行
<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區別：
x:設置或者是得到鼠標相對於目標事件的父元素的外邊界在x座標上的位置。 clientX:相對於客戶區域的x座標位置，不
包括滾動條，就是正文區域。 offsetx：設置或者是得到鼠標相對於目標事件的父元素的內邊界在x座標上的位置。
screenX:相對於用戶屏幕。
83.顯示是鼠標按鈕的哪個
<body onMouseDown="alert(event.button)">點Mouse看看//
84.打開C盤
<form action="file:///c|/"><input type="submit" value="c:/ drive"></form>//
85.當前屏幕的分辨率
screen.width、screen.height//
86.設置表格中的內容
tbl.rows[0].cells[1].innerText=document.form.text1.value;//
87.本地快捷鍵
<p><a href="file:///::{208D2C60-3AEA-1069-A2D7-08002B30309D}" target="_blank">網上鄰居</a></p>
<p><a href="file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}/d:/web" target="_blank">我的電腦</a></p>
<p><a href="file:///::{450D8FBA-AD25-11D0-98A8-0800361B1103}" target="_blank">我的文檔</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}">撥號網絡</a>(Windows 2000)</p>
88.IE菜單
<button οnclick="min.Click()"><font face="webdings">0</font></button>//改變按鈕上的圖片
<input type=button οnclick="document.execCommand('CreateLink','true','true')"> //創建新連接
<input type=button οnclick="document.execCommand('print','true','true')"> //打印
<input type=button οnclick="document.execCommand('saveas','true','網站製作.htm')">//另存爲htm
<input type=button οnclick="document.execCommand('saveas','true','網站製作.txt')">//另存爲txt
document.execCommand("SaveAs")//保存爲
document.execCommand('undo')//撤銷上一次操作
89.web對話框
<SCRIPT>
var contents='<style>body,td{font:menu}img{cursor:hand}</style>';
contents+='<title>你要關閉我嗎</title>';
contents+='<body bgcolor=menu>';
contents+='<table width=100% height=100% border=0>';
contents+='<tr><td align=center>';
contents+='你要關閉我嗎？<br>';
contents+='<img src=dark.gif οnclick=self.close() alt="...關閉">';
contents+='<img src=jet.gif οnclick=self.close() alt="全是關閉">';
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.向新打開的網頁上寫內容
newwin=window.open('about:blank','','top=10');
newwin.document.write('');//
93.返回
javascript:history.go(-2);//
94.將頁面上選中的內容複製到剪貼板
abcdefg
<input type='button'
οnclick="window.clipboardData.setData('text',document.selection.createRange().text);" value='複製頁面選中
的字符'>//
95.將頁面上選中的內容複製到剪貼板
<INPUT TYPE="text" NAME="">kjhkjhkhkj<INPUT TYPE="button" οnclick="document.execCommand('Copy', 'false',
null);">////
96.鼠標移到下拉框時自動全部打開
<select οnmοuseοver="javascript:this.size=this.length" οnmοuseοut="javascript:this.size=1"></select>//
97.獲得本機的文件
var fso = new ActiveXObject("Scripting.FileSystemObject");
var f1 = fso.GetFile("C://bsitcdata//ejbhome.xml");
alert("File last modified: " + f1.DateLastModified); //
98.判斷客戶端是否是IE瀏覽器
因爲 document.all 是 IE 的特有屬性，所以通常用這個方法來判斷客戶端是否是IE瀏覽器 ,document.all?1:0;
99.創建新的下拉框選項
new Option(text,value)這樣的函數//
100.在頁面上畫柱狀圖
<STYLE>
td{font-size:12px}
body{font-size:12px}
v/:*{behavior:url(#default#VML);} //這裏聲明瞭v作爲VML公用變量
</STYLE>
<SCRIPT LANGUAGE="JavaScript">
mathstr=12;
document.write ("<v:rect fillcolor='red'
style='width:20;color:navy;height:"+5000/(1000/mathstr)+"'><br> %"+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:Extrusionbackdepth='15pt' on='true'/></v:rect>
<v:rect fillcolor='yellow' style='width:20;color:navy;height:100'><br>%12<br>4人<v:Extrusionbackdepth='15pt' on='true'/></v:rect>//
