JAVASCRIPT精彩200例(二)

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JavaScript IE 浏览器 Servlet VBScript

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.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" onmouseover=this.className='mouseoverbt'; onmouseout=this.className='mouseout';><a href="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); background-repeat: no-repeat; } .mouseout { background-color: #E0E0E0; } </style> 55.同时按下CTRL和Q键 document.onkeydown=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=# onmouseover=showme() onmouseout=hidme() onmousemove=showme() son=hint>dfdfd</a> <div id=hint style="display:none"></div> </BODY> </HTML> --------------------------------------------------------------------------------------------------------- ------------ 57.弹出窗口方法一：<body onload="openwen()"> 浏览器读页面时弹出窗口；方法二：<body onunload="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="#" onclick="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" onclick="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()" oncontextmenu="noEffect()">// 72.屏蔽右键菜单 oncontextmenu="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 onmouseup="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> <table border="1" width="100%" onclick=getrow(this)> <tr> <td width="20%">　</td> <td width=&q

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JAVASCRIPT精彩200例(三) | JAVASCRIPT精彩200例(一)

2007-03-27 09:33
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