javascript 常用代码技巧大收集

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mb5fdcadbf25fde 2011-03-07 09:42:00

文章标签 javascript 常用代码 .net html hive 文章分类 代码人生

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:#ebcf16">

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

7.使窗口变成指定的大小

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

10.可以点击文字实现radio选项的选定 <br>

<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

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>

<!-- Hiding

function hello() {

alert("哈罗!");

}

</script>

</head>

<body>

</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>

<!--

function bgChange(selObj) {

newColor = selObj.options[selObj.selectedIndex].text;

document.bgColor = newColor;

selObj.selectedIndex = -1;

}

//-->

</SCRIPT>

<B>Changing Background Colors</B>

<BR>

<FORM>

<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

<!--

.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" onmouseover="this.className='style2'"

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

18.改变按钮的图片.

<!--

.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="提交" onmouseover="this.className='style4'"

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

19.打印页面

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

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

<!--

function Addme(){

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

<option

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>

33.改变水平线的特征

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

35.页内跳转

<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

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>

39.文字移动

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

42.前进

43.刷新

44.转向指定网页

45.在网页上显示实时时间

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

<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

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

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

target="_blank">控制面板</a></p>

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

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>

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>

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%'