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javascript 技巧总结积累(正在积累中)

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="http://www.mamicode.com/郭强" onfocus="if(value=http://www.mamicode.com/=‘郭强‘) {value=‘‘}" onblur="if (value=http://www.mamicode.com/=‘‘) {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="http://www.mamicode.com/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="http://www.mamicode.com/找吧" name="B1" onm ouseOut=this.style.color="blue"

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

4.平面按钮 <input type=submit value=http://www.mamicode.com/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 onm ouseover=‘this.stop()‘ onm ouseout=‘this.start()‘

height=60> <!-- head_scrolltext --> <tr> <td> 共和国 </table>        <!-- end head_scrolltext --> </marquee>

9.状态栏显示该页状态 <base onm ouseover="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> &nbsp;&nbsp;&nbsp;&nbsp;<input type="radio" name="regtype" value="http://www.mamicode.com/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=‘javascript:window.print ()‘>

13.线型输入框 <input type="text" name="key"  size="12" value="http://www.mamicode.com/关键字" onFocus=this.select() onm ouseOver=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="" onm ouseOver="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="http://www.mamicode.com/提 交" onm ouseover="this.className=‘style2‘"

onmouseout="this.className=‘style1‘" class="style1">

18.改变按钮的图片. <style type="text/css"> <!-- .style3 { font-size: 12px; background: url(image/buttonbg1.gif); border: 0px; width: 60px; height: 22px} .style4 { font-size: 12px; font-weight: bold; background: url(image/buttonbg2.gif); border: 0px 0; width:

60px; height: 22px} --> </style>   本例的按钮代码如下: <input type="submit" name="Submit2" value="http://www.mamicode.com/提 交" onm ouseover="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://guoguo"

23.传递该object的form UpdateSN(‘guoqiang99267‘,this.form) function UpdateSN(strValue,strForm) {   strForm.SignInName.value = http://www.mamicode.com/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> <!-- function Addme(){ url = "http://your.site.address"; //你自己的主页地址 title = "Your Site Name"; //你自己的主页名称 window.external.AddFavorite(url,title); --> </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://www.bjd.com.cn/">北京日报</option>     <option value="http://www.ben.com.cn/">北京晚报</option> </select>

31.改变背景颜色 <td width=* class="dp" bgColor=#FAFBFC onm ouseover="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="http://www.mamicode.com/vote.asp?CurPage=8&id=3488">8</a>

35.页内跳转 <a href="http://www.mamicode.com/#1">1</a> <a href="http://www.mamicode.com/#2">2</a> <a href="http://www.mamicode.com/#3">3</a> <a href="http://www.mamicode.com/#4">4</a> <a href="http://www.mamicode.com/#5">5</a> <a href="http://www.mamicode.com/#6">6</a> <a href="http://www.mamicode.com/#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=http://www.mamicode.com/cindy onclick=haha()>

39.文字移动 <marquee scrollamount=3 onm ouseover=this.stop(); onm ouseout=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=http://www.mamicode.com/back>

42.前进 <INPUT TYPE="button" onclick=window.history.forward() value=http://www.mamicode.com/forward>

43.刷新 <INPUT TYPE="button" onclick=document.location.reload() value=http://www.mamicode.com/reload>

44.转向指定网页 document.location="http://ww"或者document.location.assign("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=http://www.mamicode.com/(new Date);",1000) } </SCRIPT>//

46.可以下载文件 document.location.href="http://www.mamicode.com/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://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" onm ouseover=this.className=‘mouseoverbt‘;

onmouseout=this.className=‘mouseout‘;><a href="http://www.mamicode.com/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"> <!-- 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=http://www.mamicode.com/ga> dfdfd