??
//文档状态改变
<iframe src="a.html" id="f" name="f" scrolling="no" frameborder=0 marginwidth=0 marginheight=0></iframe>
<script>
var doc=window.frames["f"].document;
function s(){
if (doc.readyState=="complete"){
??document.all.f.style.height=doc.body.scrollHeight
??document.all.f.style.width=doc.body.scrollWidth
}
}
doc.onreadystatechange=s
</script>
//刷新后不变的文本框 <HTML>
<HEAD>
<META NAME="save" CONTENT="history">
<STYLE>
?.sHistory {behavior:url(#default#savehistory);}
</STYLE>
</HEAD>
<BODY>
<INPUT class=sHistory type=text id=oPersistInput>
</BODY>
</HTML>
//访问剪贴板
event.dataTransfer.setData("URL", oImage.src);
sImageURL = event.dataTransfer.getData("URL")
(2)普通访问
window.clipboardData.setData("Text",oSource.innerText);
window.clipboardData.getData("Text");
//操作COOKIE
function SetCookie(sName, sValue)
{
document.cookie = sName + "=" + escape(sValue) + "; ";
}
function GetCookie(sName)
{
var aCookie = document.cookie.split("; ");
for (var i=0; i < aCookie.length; i++)
{
?
??var aCrumb = aCookie.split("=");
??if (sName == aCrumb[0])??
??return unescape(aCrumb[1]);
}
??
}
function DelCookie(sName)
{
document.cookie = sName + "=" + escape(sValue) + "; expires=Fri, 31 Dec 1999 23:59:59 GMT;";
}
//setTimeout增加参数
<script>
var _st = window.setTimeout;
window.setTimeout = function(fRef, mDelay) {
if(typeof fRef == ‘function‘){
??var argu = Array.prototype.slice.call(arguments,2);
??var f = (function(){ fRef.apply(null, argu); });
??return _st(f, mDelay);
}
return _st(fRef,mDelay);
}
function test(x){
alert(x);
}
window.setTimeout(test,1000,‘fason‘);
</script>
//自定义的apply,call
Function.prototype.apply = function (obj, argu) {
if (obj) obj.constructor.prototype._caller = this;??
var argus = new Array();
for (var i=0;i<argu.length;i++)
??argus = "argu[" + i + "]";
var r;
eval("r = " + (obj ? ("obj._caller(" + argus.join(",") + ");") : ("this(" + argus.join(",") + ");")));
return r;
};
Function.prototype.call = function (obj) {
var argu = new Array();
for (var i=1;i<arguments.length;i++)
??argu[i-1] = arguments;
return this.apply(obj, argu);
}; ???
//下载文件
function DownURL(strRemoteURL,strLocalURL)
{
try
{
??var xmlHTTP=new ActiveXObject("Microsoft.XMLHTTP");
??xmlHTTP.open("Get",strRemoteURL,false);
??xmlHTTP.send();
??var adodbStream=new ActiveXObject("ADODB.Stream");
??adodbStream.Type=1;//1=adTypeBinary
??adodbStream.Open();
??adodbStream.write(xmlHTTP.responseBody);
??adodbStream.SaveToFile(strLocalURL,2);
??adodbStream.Close();
??adodbStream=null;
??xmlHTTP=null;
?
}
catch(e)
{
??window.confirm("下载URL出错!");
}
//window.confirm("下载完成.");
}
//检验连接是否有效
function getXML(URL)??
{
var xmlhttp = new ActiveXObject("microsoft.xmlhttp");
xmlhttp.Open("GET",URL, false);??
try
{??
??xmlhttp.Send();
}
catch(e){}
finally??
{
??var result = xmlhttp.responseText;
??if(result)??
??{
?if(xmlhttp.Status==200)
?{
return(true);
?}
?else??
?{
return(false);
?}
??}
??else??
??{
?return(false);
??}
}
}
//POST代替FORM
<SCRIPT language="VBScript">
Function URLEncoding(vstrIn)
strReturn = ""
For i = 1 To Len(vstrIn)
???ThisChr = Mid(vStrIn,i,1)
???If Abs(Asc(ThisChr)) < &HFF Then
?strReturn = strReturn & ThisChr
???Else
?innerCode = Asc(ThisChr)
?If innerCode < 0 Then
innerCode = innerCode + &H10000
?End If
?Hight8 = (innerCode??And &HFF00)\ &HFF
?Low8 = innerCode And &HFF
?strReturn = strReturn & "%" & Hex(Hight8) &??"%" & Hex(Low8)
???End If
Next
URLEncoding = strReturn
End Function
Function bytes2BSTR(vIn)
strReturn = ""
For i = 1 To LenB(vIn)
???ThisCharCode = AscB(MidB(vIn,i,1))
???If ThisCharCode < &H80 Then
?strReturn = strReturn & Chr(ThisCharCode)
???Else
?NextCharCode = AscB(MidB(vIn,i+1,1))
?strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))
?i = i + 1
???End If
Next
bytes2BSTR = strReturn
End Function
dim strA,oReq
strA = URLEncoding("submit1=Submit&text1=中文")
set oReq = CreateObject("MSXML2.XMLHTTP")
oReq.open "POST","http://ServerName/VDir/TstResult.asp",false
oReq.setRequestHeader "Content-Length",Len(strA)
oReq.setRequestHeader "CONTENT-TYPE","application/x-www-form-urlencoded"
oReq.send strA
msgbox bytes2BSTR(oReq.responseBody)
</SCRIPT>
//readyState是xmlhttp返回数据的进度，0=载入中,1=未初始化,2=已载入,3=运行中,4=完成
高级应用（二）~~~~~~~~~~~~~~~~
//组件是否安装
isComponentInstalled("{6B053A4B-A7EC-4D3D-4567-B8FF8A1A5739}", "componentID"))
//检查网页是否存在
function CheckURL(URL)
{
??var xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
??xmlhttp.Open("GET",URL, false);
??try
??{??
xmlhttp.Send();??
var result = xmlhttp.status;
??}
??catch(e) {return(false); }
??if(result==200)
??{??
return true;
??}
??xmlhttp = null;
??return false;
}
//连接数据库
<script language="javascript">
??//用 JavaScript 写服务器端连接数据库的代码示例
??var conn = new ActiveXObject("ADODB.Connection");
??conn.Open("Provider=SQLOLEDB.1; Data Source=localhost; User ID=sa; "
+"Password=; Initial Catalog=pubs");
??var rs = new ActiveXObject("ADODB.Recordset");
??var sql="select * from authors";
??rs.open(sql, conn);
shtml = "<table width=‘100%‘ border=1>";
shtml +="<tr bgcolor=‘#f4f4f4‘><td>au_id</td><td>au_lname</td><td>au_fname</td><td>phone</td><td>address</td><td> city</td><td>state</td><td>zip</td></tr>";
??while(!rs.EOF)
??{
shtml += "<tr><td>" + rs("au_id") + "</td><td>" + rs("au_lname") + "</td><td>" + rs("au_fname") + "</td><td>" + rs("phone") + "</td><td>" + rs("address") + "</td><td>" + rs("city") + "</td><td>" + rs("state") + "</td><td>" + rs("zip") + "</td></tr>";
rs.moveNext;
??}
??shtml += "</table>";
??document.write(shtml);
??rs.close();??
??rs = null;??
??conn.close();??
??conn = null;
</script>
//使用数据岛
<html>
<body>
srno：<input type=text datasrc=#xmldate DataFLD=srno size="76"><BR>
times：<input type=text datasrc=#xmldate DataFLD=times size="76"><BR>
<input id="first" TYPE=button value="<< 第一条记录" onclick="xmldate.recordset.moveFirst()">
<input id="prev" TYPE=button value="<上一条记录" onclick="xmldate.recordset.movePrevious()"> ?
<input id="next" TYPE=button value="下一条记录>" onclick="xmldate.recordset.moveNext()"> ?
<input id="last" TYPE=button value="最后一条记录>>" onclick="xmldate.recordset.moveLast()">
<input id="Add" TYPE=button value="添加新记录" onclick="xmldate.recordset.addNew()"> ?
<XML ID="xmldate">
<infolist>
<info ><srno>20041025-01</srno><times>null</times></info>
<info ><srno>20041101-09</srno><times>2004年10月1日2点22分0秒</times></info>
</infolist>
</XML>
</body>
</html>
//获得参数
<body>
<a href="javascript:location.href=location.href + ‘?a=1&b=2‘">search</a>
<script language="JavaScript">
<!--
var a = location.search.substr(1);
if(a.length>0)
{
var re = /([^&]*?)\=([^&]*)/g
var s = a.match(re);
for(var i= 0;i<s.length;i++)
{
??alert(s);
??alert(s.split("=")[1]);
}
}
//-->
</script>
</body>
//可编辑SELECT
<input type=text name=re_name style="width:100px;height:21px;font-size:10pt;"><span style="width:18px;border:0px solid red;"><select name="r00" style="margin-left:-100px;width:118px; background-color:#FFEEEE;" onChange="document.all.re_name.value=this.value;">
<option value="1">11111111<option>
<option value="2">222222</option>
<option value="3">333333</option>
???</select>
???</span>
//设置光标位置
function getCaret(textbox)
{
var control = document.activeElement;
textbox.focus();
var rang = document.selection.createRange();
??rang.setEndPoint("StartToStart",textbox.createTextRange())
control.focus();
return rang.text.length;
}
function setCaret(textbox,pos)
{
try
{
??var r =textbox.createTextRange();
?r.moveStart(‘character‘,pos);
?r.collapse(true);
?r.select();
}
catch(e)
{}
}
function selectLength(textbox,start,len)
{
try
{
??var r =textbox.createTextRange();
??
??r.moveEnd(‘character‘,len-(textbox.value.length-start));
??r.moveStart(‘character‘,start);
?
??r.select();
}
catch(e)
{//alert(e.description)}
}
function insertAtCaret(textbox,text)
{
textbox.focus();
document.selection.createRange().text = text;
}
//页内查找
function findInPage(str)
{
var txt, i, found,n = 0;
if (str == "")
{
??return false;
}
txt = document.body.createTextRange();
for (i = 0; i <= n && (found = txt.findText(str)) != false; i++)
{
??txt.moveStart("character", 1);
??txt.moveEnd("textedit");
}
if (found)
{
??txt.moveStart("character", -1);
??txt.findText(str);
??txt.select();
??txt.scrollIntoView();
??n++; ?
}
else
{
??if (n > 0)
??{
?n = 0;
?findInPage(str);
??}
??else
??{
?alert(str + "... ?您要找的文字不存在。\n \n请试着输入页面中的关键字再次查找！");
??}
}
return false;
}
//操作EXECL
<script language="javascript">
function jStartExcel() {
var xls = new ActiveXObject ( "Excel.Application" );
xls.visible = true;
var newBook = xls.Workbooks.Add;
newBook.Worksheets.Add;
newBook.Worksheets(1).Activate;
xls.ActiveWorkBook.ActiveSheet.PageSetup.Orientation = 2;
xls.ActiveWorkBook.ActiveSheet.PageSetup.PaperSize = 5;
newBook.Worksheets(1).Columns("A").columnwidth=50;
newBook.Worksheets(1).Columns("A").WrapText = true;
newBook.Worksheets(1).Columns("B").columnwidth=50;
newBook.Worksheets(1).Columns("B").WrapText = true;
newBook.Worksheets(1).Range("A1:B1000").NumberFormat = "0";
newBook.Worksheets(1).Range("A1:B1000").HorizontalAlignment = -4131;
newBook.Worksheets(1).Cells(1,1).Interior.ColorIndex="15";
newBook.Worksheets(1).Cells(1,1).value="First Column, First Cell";
newBook.Worksheets(1).Cells(2,1).value="First Column, Second Cell";
newBook.Worksheets(1).Cells(1,2).value="Second Column, First Cell";
newBook.Worksheets(1).Cells(2,2).value="Second Column, Second Cell";
newBook.Worksheets(1).Name="My First WorkSheet";
}
</script>
//自定义提示条
<a href="#" title="这是提示">tip</a>
<script Language="JavaScript">
//***********默认设置定义.*********************
tPopWait=50;//停留tWait豪秒后显示提示。
tPopShow=5000;//显示tShow豪秒后关闭提示
showPopStep=20;
popOpacity=99;
//***************内部变量定义*****************
sPop=null;
curShow=null;
tFadeOut=null;
tFadeIn=null;
tFadeWaiting=null;
document.write("<style type=‘text/css‘id=‘defaultPopStyle‘>");
document.write(".cPopText {??background-color: #F8F8F5;color:#000000; border: 1px #000000 solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}");
document.write("</style>");
document.write("<div id=‘dypopLayer‘ style=‘position:absolute;z-index:1000;‘ class=‘cPopText‘></div>");
function showPopupText(){
var o=event.srcElement;
MouseX=event.x;
MouseY=event.y;
if(o.alt!=null && o.alt!=""){o.dypop=o.alt;o.alt=""};
???if(o.title!=null && o.title!=""){o.dypop=o.title;o.title=""};
if(o.dypop!=sPop) {
sPop=o.dypop;
clearTimeout(curShow);
clearTimeout(tFadeOut);
clearTimeout(tFadeIn);
clearTimeout(tFadeWaiting);
if(sPop==null || sPop=="") {
dypopLayer.innerHTML="";
dypopLayer.style.filter="Alpha()";
dypopLayer.filters.Alpha.opacity=0;
}
else {
if(o.dyclass!=null) popStyle=o.dyclass??
else popStyle="cPopText";
curShow=setTimeout("showIt()",tPopWait);
}
}
}
function showIt(){
dypopLayer.className=popStyle;
dypopLayer.innerHTML=sPop;
popWidth=dypopLayer.clientWidth;
popHeight=dypopLayer.clientHeight;
if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24
else popLeftAdjust=0;
if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24
else popTopAdjust=0;
dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust;
dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust;
dypopLayer.style.filter="Alpha(Opacity=0)";
fadeOut();
}
function fadeOut(){
if(dypopLayer.filters.Alpha.opacity<popOpacity) {
dypopLayer.filters.Alpha.opacity+=showPopStep;
tFadeOut=setTimeout("fadeOut()",1);
}
else {
dypopLayer.filters.Alpha.opacity=popOpacity;
tFadeWaiting=setTimeout("fadeIn()",tPopShow);
}
}
function fadeIn(){
if(dypopLayer.filters.Alpha.opacity>0) {
dypopLayer.filters.Alpha.opacity-=1;
tFadeIn=setTimeout("fadeIn()",1);
}
}
document.onmouseover=showPopupText;
</script>
//插入文字
document.onclick =function(){??
var oSource = window.event.srcElement;??
if(oSource.tagName!="DIV")??
return false;??
var sel = document.selection;??
if (sel!=null) {??
var rng = sel.createRange();??
if (rng!=null)??
rng.pasteHTML("<font color=red>插入文字</font>");??
}??
}??
//netscapte下操作xml
doc = new ActiveXObject("Msxml2.DOMDocument");
doc = new ActiveXObject("Microsoft.XMLDOM")
->>
doc = (new DOMParser()).parseFromString(sXML,‘text/xml‘)
//禁止FSO
1.注销组件
regsvr32 /u scrrun.dll
2.修改PROGID??
HKEY_CLASSES_ROOT\Scripting.FileSystemObject
Scripting.FileSystemObject
3.对于使用object的用户，修改HKEY_CLASSES_ROOT\Scripting.
//省略号
<DIV STYLE="width: 120px; height: 50px; border: 1px solid blue;
?overflow: hidden; text-overflow:ellipsis">
<NOBR>就是比如有一行文字，很长，表格内一行显示不下.</NOBR>
</DIV>
//判断键值
<html>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<head>
<script language="javascript">
var ie??=navigator.appName=="Microsoft Internet Explorer"?true:false;
?
function keyDown(e)
{
if(!ie)
{
??var nkey=e.which;
??var iekey=‘现在是ns浏览器‘;
??var realkey=String.fromCharCode(e.which);
}
if(ie)
{
??var iekey=event.keyCode;
??var nkey=‘现在是ie浏览器‘;
??var realkey=String.fromCharCode(event.keyCode);
??if(event.keyCode==32){realkey=‘\‘ 空格\‘‘}
??if(event.keyCode==13){realkey=‘\‘ 回车\‘‘}
??if(event.keyCode==27){realkey=‘\‘ Esc\‘‘}
??if(event.keyCode==16){realkey=‘\‘ Shift\‘‘}
??if(event.keyCode==17){realkey=‘\‘ Ctrl\‘‘}
??if(event.keyCode==18){realkey=‘\‘ Alt\‘‘}
}
alert(‘ns浏览器中键值:‘+nkey+‘\n‘+‘ie浏览器中键值:‘+iekey+‘\n‘+‘实际键为‘+realkey);
}
document.onkeydown = keyDown;
</script>
</head>
<body>
//Javascript Document.
<hr>
<center>
<h3>请按任意一个键。。。。</h3>
</center>
</body>
</html>
//检测media play版本
<IE:clientCaps ID="oClientCaps" style="{behavior:url(#default#clientcaps)}" />
<SCRIPT>
var flash="";
WMPVersion= oClientCaps.getComponentVersion("{22D6F312-B0F6-11D0-94AB-0080C74C7E95}","ComponentID");??
if (WMPVersion != "") {
flash = "";
var version = WMPVersion.split(",");
var i;
for (i = 0; i < version.length; i++) {
?if (i != 0)
flash += ".";
?flash += version;
}
???document.write("您的Windows Media Player 版本是:"+flash+"<p>");
??}
</SCRIPT>
//图象按比例
<script language="JavaScript">
<!--
//图片按比例缩放
var flag=false;
function DrawImage(ImgD){
var image=new Image();
var iwidth = 80;??//定义允许图片宽度
var iheight = 80;??//定义允许图片高度
image.src=ImgD.src;
if(image.width>0 && image.height>0){
flag=true;
if(image.width/image.height>= iwidth/iheight){
??if(image.width>iwidth){ ?
??ImgD.width=iwidth;
??ImgD.height=(image.height*iwidth)/image.width;
??}else{
??ImgD.width=image.width; ?
??ImgD.height=image.height;
??}
??ImgD.alt=image.width+"×"+image.height;
??}
else{
??if(image.height>iheight){ ?
??ImgD.height=iheight;
??ImgD.width=(image.width*iheight)/image.height; ?
??}else{
??ImgD.width=image.width; ?
??ImgD.height=image.height;
??}
??ImgD.alt=image.width+"×"+image.height;
??}
}
}??
//-->
</script>
<img src=".." onload = "DrawImage(this)">
//细线SELECT
<span style="border:1px solid #000000; position:absolute; overflow:hidden;" >
<select style="margin:-2px;">
<option>1111</option>
<option>11111111111111</option>
<option>111111111</option>
</select></span>
//Import
function Import() {
for( var i=0; i<arguments.length; i++ ) {
??var file = arguments;
??if ( file.match(/\.js$/i))??
?document.write(‘<script type=\"text/javascript\" src=\"‘ + file + ‘\"></sc‘ + ‘ript>‘);
??else
?document.write(‘<style type=\"text/css\">@import \"‘ + file + ‘\" ;</style>‘);
}
};
//js枚举
function getComputerName()
{
var objWMIService = GetObject("Winmgmts:root\cimv2");
for(e = new Enumerator(objWMIService) ; !e.atEnd() ; e.moveNext())
{
var getComputer = e.item();
return getComputer.Name;
}
}
//条件编译
<script language=javascript>
/*@cc_on @*/
/*@if (@_win32 && @_jscript_version>5)
function window.confirm(str)
{
execScript("n = msgbox(‘"+ str +"‘, 257)", "vbscript");
return(n == 1);
}
@end @*/
</script>
//取得innerText
<SCRIPT LANGUAGE="JavaScript">
<!--
var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.4.0");
var currNode;
xmlDoc.async = false;
xmlDoc.async = false;
xmlDoc.loadXML("<TABLENAME> ?你好你阿三 大法 ???司法等四 ???</TABLENAME>");
currNode = xmlDoc.documentElement;
??var s = currNode.xml;
??var r = /\<([^\>\s]*?)[^\>]*?\>([^\<]*?)\<\/\1\>/
??var b = s.replace(r,"$2");
??alert(b);
//-->
</SCRIPT>
//mergeAttributes 复制所有读/写标签属性到指定元素。
<SCRIPT>
function fnMerge(){
oSource.children[1].mergeAttributes(oSource.children[0]);
}
</SCRIPT>
<SPAN ID=oSource>
<DIV
ID="oDiv"
ATTRIBUTE1="true"
ATTRIBUTE2="true"
onclick="alert(‘click‘);"
onmouseover="this.style.color=‘#0000FF‘;"
onmouseout="this.style.color=‘#000000‘;"
>
This is a sample <B>DIV</B> element.
</DIV>
<DIV ID="oDiv2">
This is another sample <B>DIV</B> element.
</DIV>
</SPAN>
<INPUT
TYPE="button"
VALUE="Merge Attributes"
onclick="fnMerge()"
>
JavaScript[对象.属性]集锦
SCRIPT 标记??
用于包含javascript代码.??
语法??
属性??
LANGUAGE 定义脚本语言??
SRC 定义一个URL用以指定以.JS结尾的文件
windows对象??
每个HTML文档的顶层对象.??
属性??
frames[] 子桢数组.每个子桢数组按源文档中定义的顺序存放.??
feames.length 子桢个数.??
self 当前窗口.??
parent 父窗口(当前窗口是中一个子窗口).??
top 顶层窗口(是所有可见窗口的父窗口).??
status 浏览器状态窗口上的消息.??
defaultStatus 当status无效时,出现在浏览器状态窗口上的缺省消息.??
name 内部名,为由window.open()方法打开的窗口定义的名字.??
方法??
alert("message") 显示含有给定消息的"javascript Alert"对话框.??
confirm("message") 显示含有给定消息的"Confirm"对话框(有一个OK按钮和一个Cancel按钮).如果用户单击OK返回true,否则返回false.??
prompt("message") 显示一个"prompt"对话框,要求用户根据显示消息给予相应输入.??
open("URL","name") 打开一个新窗口,给予一个指定的名字.??
close() 关闭当前窗口.
frame对象??
它是整个浏览器窗口的子窗口,除了status,defaultStatus,name属性外,它拥有window对象的全部属性.??
location对象??
含有当前URL的信息.??
属性??
href 整个URL字符串.??
protocol 含有URL第一部分的字符串,如http:??
host 包含有URL中主机名:端口号部分的字符串.如//www.cenpok.net/server/??
hostname 包含URL中主机名的字符串.如http://www.cenpok.net??
port 包含URL中可能存在的端口号字符串.??
pathname URL中"/"以后的部分.如~list/index.htm??
hash "#"号(CGI参数)之后的字符串.??
search "?"号(CGI参数)之后的字符串.??
document对象
含有当前文档信息的对象.
属性
title 当前文档标题,如果未定义,则包含"Untitled".
location 文档的全URL.
lastModified 含有文档最后修改日期.
referrer 调用者URL,即用户是从哪个URL链接到当前页面的.
bgColor 背景色(#xxxxxx)
fgColor 前景文本颜色.
linkColor 超链接颜色.
vlinkColor 访问过的超链颜色.
alinkColor 激活链颜色(鼠标按住未放时).
forms[] 文档中form对象的数组,按定义次序存储.
forms.length 文档中的form对象数目.
links[] 与文档中所有HREF链对应的数组对象,按次序定义存储.
links.length 文档中HREF链的数目.
anchors[] 锚(...)数组,按次序定义存储.
anchors.length 文档中锚的数目.
方法
write("string") 将字符串突出给当前窗口.(字符串可以含有HTML标记)
writeln("string") 与write()类似,在结尾追加回车符,只在预定格式文本中(...或...)生效.
clear() 清当前窗口.
close() 关闭当前窗口.
form对象
属性
name
中的NAME属性的字符串值.
method 中METHOD属性的类值,"0"="GET" ,"1"="POST" .
action 中ACTION属性的字符串值.
target 表格数据提交的目标,与标记中相应属性一致.
elements[index] elements属性包含form中的各个元素.
length 表格中的元素个数.
方法
submit() 提交表格.
事件处理器onSubmit() 用户单击一个定义好的按钮提交form时运行的代码.
text和textarea对象
属性
name NAME属性的字符串值.
value 域内容的字符串值.
defaultValue 域内容的初始字符串值.
方法
focus() 设置对象输入焦点.
blur() 从对象上移走输入焦点.
select() 选定对象的输入区域.
事件处理器
onFocus 当输入焦点进入时执行.
onBlur 当域失去焦点时执行.
onSelect 当域中有部分文本被选定时执行.
onChange 当域失去焦点且域值相对于onFocus执行有所改变时执行.
