JS技巧收集 - jalonlovesja的博客

作者在 2010-09-19 10:50:54 发布以下内容

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，产生该档
Onchange:当文字值改变时，产生该事件
Onselect:当文字加亮后，产生该档

<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.状态区显示该页状态
<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

    <input type="radio" name="regtype" value="A03" id="A03">
<label for="A03"> 情侣 : 一次注册两个账户</label>

11.可以在文字域的font写onclick事件

12.打印打印网页
<a href='javascript:window.print ()'>

13.线型输入框
<input type="text" name="key" size="12" value="关键词" onFocus=this.select() onMouseOver=this.focus()

class="line">

14.显示文文件最后修改日期
<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="" onMouseOver="hello()">link
</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="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="javascript:doPrint();">打印本稿</div>

20.可以直接写html语言
document.write("");

21.改变下拉列表的颜色
<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.文字卷标
<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://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

35.页内跳转
<a href="#1">1
<a href="#2">2
<a href="#3">3
<a href="#4">4
<a href="#5">5
<a href="#6">6
<a href="#7">7
<a name="1">dfdf
<a name="2">dfdf//

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://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=(new Date);",1000)
}
</SCRIPT>//

46.可以下载档
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>*'">
<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>

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=说明 border=0 src="http://bjpic.163.net/images/mail/button-help.gif"></a>

51.向档中写内容
<%@ 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</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
<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
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.文文件的路径
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判断档是否存在
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//

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="20%">　</td>
    <td width="20%">　</td>
    <td width="20%">　</td>
    <td width="20%">　</td>
</tr>
<tr>
    <td width="20%">　</td>
    <td width="20%">　</td>
    <td width="20%">　</td>
    <td width="20%">　</td>
    <td width="20%">　</td>
</tr>
</table>//

80.删除表格某行，xx表示某行，下标从0开始计算
document.all.myTable.deleteRow(xx)//

81.动态的向表格中添加行
<table id="t1" border="1">
</table>
<script language="JavaScript">
function add()
{
t1.insertRow().insertCell().innerHTML = '<input name="test'+t1.rows.length+'">';
}//

82.event.x,event.clientX,event.offsetX区别：
x:设置或者是得到鼠标相对于目标事件的父元素的外边界在x坐标上的位置。 clientX:相对于客户区域的x坐标位置，不

包括滚动条，就是正文区域。 offsetx：设置或者是得到鼠标相对于目标事件的父元素的内边界在x坐标上的位置。
screenX:相对于用户屏幕。

83.显示是鼠标按钮的哪个
<body onMouseDown="alert(event.button)">点Mouse看看//

84.打开C盘
<form action="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="file:///::{208D2C60-3AEA-1069-A2D7-08002B30309D}" target="_blank">网上邻居

<p><a href="file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}\d:\web" target="_blank">我的计算机

<p><a href="file:///::{450D8FBA-AD25-11D0-98A8-0800361B1103}" target="_blank">我的文檔

<p><a href="file:///::{645FF040-5081-101B-9F08-00AA002F954E}" target="_blank">回收站

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