JAVASCRIPT精彩200例
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
<scrīpt>
window.resizeTo(300,283);
</scrīpt>
8.使文字上下滚动
<marquee direction=up scrollamount=1 scrolldelay=100 onmouseover='this.stop()' onmouseout='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 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>打印网页
<a href='javascrīpt:window.print ()'>
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
<scrīpt language=javascrīpt>
function hi(str)
{
document.write(document.lastModified)
alert("hi"+str+"!")
}
</scrīpt>
15.可以在鼠标移到文字上时就触发事件
<html>
<head>
<scrīpt language="Livescrīpt">
<!-- Hiding
function hello() {
alert("哈罗!");
}
</scrīpt>
</head>
<body>
<a href="" onMouseOver="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>
<scrīpt>
<!--
function bgChange(selObj) {
newColor = selObj.options[selObj.selectedIndex].text;
document.bgColor = newColor;
selObj.selectedIndex = -1;
}
//-->
</scrīpt>
<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="提 交" onmouseover="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="提 交" onmouseover="this.className='style4'"
onmouseout="this.className='style3'" class="style3">
19.打印页面
<div align="center"><a class=content href="javascrīpt: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 = 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
<scrīpt language=javascrīpt>
<!--
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);
-->
</scrīpt>//
27.过10秒自动关闭页面
< scrīpt language="Javascrīpt" >
function closeit() {
setTimeout("self.close()"，10000)
}
< /scrīpt >
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 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
javascrīpt:this.location.reload()//
38.将网页的按钮使能
<scrīpt LANGUAGE="Javascrīpt">
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;
}
}
</scrīpt>
<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
<scrīpt LANGUAGE="Javascrīpt">
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
</scrīpt>//
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://ww/"或者document.location.assign("http://guoguo.com/")
45.在网页上显示实时时间
<scrīpt LANGUAGE="Javascrīpt">
var clock_id;
window.onload=function()
{
clock_id=setInterval("document.form1.txtclock.value=(new Date);",1000)
}
</scrīpt>//
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(