javascript 常用代码技巧大收集

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" onfocus="if(value=='郭强') {value=''}" onblur="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 onmouseover='this.stop()' onmouseout='this.start()' height=60>  <tr> <td> 共和国 </table>  </marquee> 9.状态栏显示该页状态 <base onmouseover="window.status='网站建设 http://www.webmake.cn/' ;return true"> 10.可以点击文字实现radio选项的选定 <br> <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 href='javascript:window.print ()'> </a>打印网页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">  </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">  </style> 　　本例按钮的代码如下： <input type="submit" name="Submit" value="提交" onmouseover="this.className='style2'" onmouseout="this.className='style1'" class="style1"> 18.改变按钮的图片. <style type="text/css">  </style> 　　本例的按钮代码如下： <input type="submit" name="Submit2" value="提交" onmouseover="this.className='style4'" onmouseout="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://blog.csdn.net/lxs5i5j/archive/2007/01/22/"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 onchange='if(this.value!="")window.open(this.value)' class="textinput"> <option selected>主办单位</option> <option>-----------------</option> <option value=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://www.bjd.com.cn/">北京日报</option> <option value=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://www.ben.com.cn/">北京晚报</option> </select> 31.改变背景颜色 <td width=* class=dp bgColor=#FAFBFC onmouseover="this.bgColor='#FFFFFF';" onmouseout="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 onclick=haha()> <INPUT TYPE="button" NAME="bb " value=guoguo> <INPUT TYPE="button" NAME="bb " value=guoguo> 39.文字移动 <marquee scrollamount=3 onmouseover=this.stop(); onmouseout=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.onmousedown=sc document.ondblclick=initialize </SCRIPT>// 41.后退 <INPUT TYPE="button" onclick=window.history.back() value=back> 42.前进 <INPUT TYPE="button" onclick=window.history.forward() value=forward> 43.刷新 <INPUT TYPE="button" onclick=document.location.reload() value=reload> 44.转向指定网页 document.location=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://ww"或者document.location.assign(http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://guoguo.com") 45.在网页上显示实时时间 <SCRIPT LANGUAGE="JavaScript"> var clock_id; window.onload=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" onclick="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-FAMILY: 宋体; 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://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://bjpic.163.net/images/mail/button-help.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.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(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=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{208D2C60-3AEA-1069-A2D7-08002B30309D}" target="_blank">网上邻居</a></p> <p><a href=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}d:web" target="_blank">我的电脑</a></p> <p><a href=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{450D8FBA-AD25-11D0-98A8-0800361B1103}" target="_blank">我的文档</a></p> <p><a href=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{645FF040-5081-101B-9F08-00AA002F954E}" target="_blank">回收站</a></p> <p><a href=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}::{21EC2020-3AEA-1069-A2DD-08002B30309D}" target="_blank">控制面板</a></p> <p><a href=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"file:///::{7007ACC7-3202-11D1-AAD2-00805FC1270E}">拨号网络</a>(windows 2000)</p> 88.IE菜单 <button onclick="min.Click()"><font face="webdings">0</font></button>//改变按钮上的图片 <input type=button onclick="document.execCommand('CreateLink','true','true')"> //创建新连接 <input type=button onclick="document.execCommand('print','true','true')"> //打印 <input type=button onclick="document.execCommand('saveas','true','网站制作.htm')">//另存为htm <input type=button onclick="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.aspxclub.com/UploadFile/Material/1/1281.gif onclick=self.close() alt="...关闭">'; contents+='<img src=http://www.aspxclub.com/UploadFile/Material/1/1282.gif onclick=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 onclick="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' onclick="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" onclick="document.execCommand('Copy', 'false', null);">//// 96.鼠标移到下拉框时自动全部打开 <select onmouseover="javascript:this.size=this.length" onmouseout="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> %"+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%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#ffff33'><v:path v='m 300,200 ae 300,200,200,150,0,9437184 xe'/></v:shape> <v:shape id='php' style='width:10;height:10;top:10;left:0' title='得票数:1 比例:6.67%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#ff9933'><v:path v='m 300,200 ae 300,200,200,150,9437184,1572864 xe'/></v:shape> <v:shape id='jsp' style='width:10;height:10;top:10;left:0' title='得票数:2 比例:13.33%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#3399ff'><v:path v='m 300,200 ae 300,200,200,150,11010048,3145728 xe'/></v:shape> <v:shape id='c#写的.netWEB程序' style='width:10;height:10;top:10;left:0' title='得票数:3 比例:20.00%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#99ff33'><v:path v='m 300,200 ae 300,200,200,150,14155776,4718592 xe'/></v:shape> <v:shape id='vb.net写的.netWEB程序' style='width:10;height:10;top:10;left:0' title='得票数:2 比例:13.33%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#ff6600'><v:path v='m 300,200 ae 300,200,200,150,18874368,3145728 xe'/></v:shape> <v:shape id='xml技术' style='width:10;height:10;top:10;left:0' title='得票数:1 比例:6.67%' onmouseover='javascript:show(this);' onmouseout='javascript:hide(this);' href='http://www.cnADO.com' CoordSize='10,10' strokecolor='white' fillcolor='#ff99ff'><v:path v='m 300,200 ae 300,200,200,150,22020096,1572864 xe'/></v:shape> </v:group> <v:group style='width: 6cm; height: 6cm' coordorigin='0,0' coordsize='250,250'> <v:rect style='height:10;width:15;top:0;left:10' fillcolor='#ffff33'/> <v:rect style='height:28;width:100;top:0;left:30' stroked='false'><v:textbox style='fontsize:2'>asp技术</v:textbox/></v:rect> <v:rect style='height:10;width:15;top:30;left:10' fillcolor='#ff9933'/> <v:rect style='height:28;width:100;top:30;left:30' stroked='false'><v:textbox style='fontsize:2'>php</v:textbox/></v:rect> <v:rect style='height:10;width:15;top:60;left:10' fillcolor='#3399ff'/> <v:rect style='height:28;width:100;top:60;left:30' stroked='false'><v:textbox style='fontsize:2'>jsp</v:textbox/></v:rect> <v:rect style='height:10;width:15;top:90;left:10' fillcolor='#99ff33'/> <v:rect style='height:28;width:100;top:90;left:30' stroked='false'><v:textbox style='fontsize:2'>c#写的.netWEB程序</v:textbox/></v:rect> <v:rect style='height:10;width:15;top:120;left:10' fillcolor='#ff6600'/> <v:rect style='height:28;width:100;top:120;left:30' stroked='false'><v:textbox style='fontsize:2'>vb.net 写的.netWEB程序</v:textbox/></v:rect> <v:rect style='height:10;width:15;top:150;left:10' fillcolor='#ff99ff'/> <v:rect style='height:28;width:100;top:150;left:30' stroked='false'><v:textbox style='fontsize:2'>xml技术 </v:textbox/></v:rect> </v:group> <div style="position: absolute; left: 10; top: 10; width: 760; height:16"> <table border="1" cellpadding="2" cellspacing="2" cellpadding="0" cellspacing="0" style="border-collapse: collapse" bordercolor="#CCCCCC" width="100%" ID="Table1"> <tr> <td width="100%" id=div1>　</td> </tr> </table> </div>// 102.是一个特殊的容器，想装个网页都行 <button><iframe src=http://blog.csdn.net/lxs5i5j/archive/2007/01/22/"http://www.google.com/"></iframe></button>//button 103.外部的html代码 event.srcElement.outerHTML// 104.标识当前的IE事件的触发器 event.srcElement和event.keyCode// 105.事件类型 event.type// 106.动态改变类型 <style> .Overnone { border-width:0;background-color:darkblue;cursor:default;color:gold;width:115} .Outnone {border-width:0;background-color:white;cursor:default;width:115} </style> <input class=Outnone onmouseover=this.className='Overnone' >// 107.页面翻转 <html dir=rtl></html>//

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所以呢，在引用js文档的时候，要设置被引用的文档是什么编码的。如：一个utf-8的页面引用一个gb2312的js文档，那么就要这么写 <script type="text/javascript" charset="gb2312" src="gb2312.js"></script> 这样就>>>详细阅读

本文标题：javascript 常用代码技巧大收集

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