javascript小技巧（转载）

引自：http://www.cnblogs.com/ttyp/archive/2004/11/15.html

//事件源对象
event.srcElement.tagName
event.srcElement.type
//捕获释放
event.srcElement.setCapture();
event.srcElement.releaseCapture();

//事件按键
event.keyCode
event.shiftKey
event.altKey
event.ctrlKey

//事件返回值
event.returnValue

//鼠标位置
event.x
event.y

//窗体活动元素
document.activeElement

//绑定事件
document.captureEvents(Event.KEYDOWN);

//访问窗体元素
document.all("txt").focus();
document.all("txt").select();

//窗体命令：
document.execCommand

//窗体COOKIE：
document.cookie

//菜单事件：
document.oncontextmenu

//创建元素：
document.createElement("SPAN");

//根据鼠标获得元素：
document.elementFromPoint(event.x,event.y).tagName=="TD

document.elementFromPoint(event.x,event.y).appendChild(ms)

//窗体图片：
document.images[索引]

//窗体事件绑定：
document.onmousedown=scrollwindow;

//元素：
document.窗体.elements[索引]

//对象绑定事件
document.all.xxx.detachEvent('onclick',a);

//插件数目
navigator.plugins

//取变量类型
typeof($js_libpath) == "undefined"

下拉框.options[索引]
下拉框.options.length

document.getElementsByName("r1");
document.getElementById(id);

//定时
timer=setInterval('scrollwindow()',delay);
clearInterval(timer);

//UNCODE编码
escape() ,unescape

//父对象
obj.parentElement(dhtml)
obj.parentNode(dom)

//交换表的行
TableID.moveRow(2,1)

//各种尺寸
s += "\r\n网页可见区域宽："+ document.body.clientWidth;
s += "\r\n网页可见区域高："+ document.body.clientHeight;
s += "\r\n网页可见区域高："+ document.body.offsetWeight +" (包括边线的宽)";
s += "\r\n网页可见区域高："+ document.body.offsetHeight +" (包括边线的宽)";
s += "\r\n网页正文全文宽："+ document.body.scrollWidth;
s += "\r\n网页正文全文高："+ document.body.scrollHeight;
s += "\r\n网页被卷去的高："+ document.body.scrollTop;
s += "\r\n网页被卷去的左："+ document.body.scrollLeft;
s += "\r\n网页正文部分上："+ window.screenTop;
s += "\r\n网页正文部分左："+ window.screenLeft;
s += "\r\n屏幕分辨率的高："+ window.screen.height;
s += "\r\n屏幕分辨率的宽："+ window.screen.width;
s += "\r\n屏幕可用工作区高度："+ window.screen.availHeight;
s += "\r\n屏幕可用工作区宽度："+ window.screen.availWidth;

//过滤数字
onkeypress="return event.keyCode>=48&&event.keyCode<=57||event.keyCode==46" onpaste="return !clipboardData.getData('text').match(/\D/)" ondragenter="return false"

//可编辑
contenteditable=true

//替换CSS
document.all.csss.href = "a.css";

//并排显示
display:inline

//隐藏焦点
hidefocus=true

根据宽度换行
style="word-break:break-all"

//自动刷新
<meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net">

//简单邮件
<a href="mailto:aaa@bbb.com?subject=ccc&body=xxxyyy">

//快速转到位置
obj.scrollIntoView(true)

//锚
<a name="first">
<a href="#first">anchors</a>

//网页传递参数
location.search();

//特殊用途
<input type=button value=导入收藏夹 onclick="window.external.ImportExportFavorites(true,'http://localhost');">
<input type=button value=导出收藏夹 onclick="window.external.ImportExportFavorites(false,'http://localhost');">
<input type=button value=整理收藏夹 onclick="window.external.ShowBrowserUI('OrganizeFavorites', null)">
<input type=button value=语言设置 onclick="window.external.ShowBrowserUI('LanguageDialog', null)">
<input type=button value=加入收藏夹 onclick="window.external.AddFavorite('http://www.google.com/', 'google')">
<input type=button value=加入到频道 onclick="window.external.addChannel('http://www.google.com/')">
<input type=button value=加入到频道 onclick="window.external.showBrowserUI('PrivacySettings',null)">

//不缓存
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="0">

//执行菜单命令
execCommand

双字节字符
/[^\x00-\xff]/

//让英文字符串超出表格宽度自动换行
word-wrap: break-word; word-break: break-all;

//消除图像工具栏
<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="false">
or
<head>
<meta http-equiv="imagetoolbar" content="no">
</head>

//防止点击空链接时，页面往往重置到页首端。
<a href="javascript:function()">word</a>

//无提示关闭
function Close()
{
var ua=navigator.userAgent
var ie=navigator.appName=="Microsoft Internet Explorer"?true:false
if(ie)
{
      var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))))
  if(IEversion< 5.5)
  {
   var str = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">'
       str += '<param name="Command" value="Close"></object>';
       document.body.insertAdjacentHTML("beforeEnd", str);
       document.all.noTipClose.Click();
  }
     else
  {
       window.opener =null;
       window.close();
      }
}
else
{
  window.close()
}
}

//禁止右键
document.oncontextmenu = function() { return false;}

//禁止保存
<noscript><iframe src="*.htm"></iframe></noscript>

//禁止选取
<body oncontextmenu="return false" ondragstart="return false" onselectstart ="return false" onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false"onmouseup="document.selection.empty()>

//禁止粘贴
<input type=text onpaste="return false">

//地址栏图标
<link rel="Shortcut Icon" href="favicon.ico">
favicon.ico 名字最好不变16*16的16色,放虚拟目录根目录下

//收藏栏图标
<link rel="Bookmark" href="favicon.ico">

//查看源码
<input type=button value=查看网页源代码 onclick="window.location = 'view-source:'+ 'http://www.csdn.net/'">

//取得控件得绝对位置(1)
<script language="javascript">
function getoffset(e)
{
var t=e.offsetTop;
var l=e.offsetLeft;
while(e=e.offsetParent)
{
t+=e.offsetTop;
l+=e.offsetLeft;
}
var rec = new Array(1);
rec[0] = t;
rec[1] = l;

return rec
}

//获得控件的绝对位置(2)
oRect = obj.getBoundingClientRect();
oRect.left
oRect.top

</script>

//最小化,最大化,关闭
<object id=min classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Minimize"></object>
<object id=max classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">
<param name="Command" value="Maximize"></object>
<OBJECT id=close classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">
<PARAM NAME="Command" value="Close"></OBJECT>

//关闭输入法
<input style="ime-mode:disabled">

//光标停在文字最后
<script language="javascript">
function cc()
{
var e = event.srcElement;
var r =e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name=text1 value="123" onfocus="cc()">

//自动全选
<input type=text name=text1 value="123" onfocus="this.select()">

//ENTER键可以让光标移到下一个输入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9">

//页面进入和退出的特效
进入页面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">
推出页面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">
这个是页面被载入和调出时的一些特效。duration表示特效的持续时间，以秒为单位。transition表示使

用哪种特效，取值为1-23:
　　0 矩形缩小
　　1 矩形扩大
　　2 圆形缩小
　　3 圆形扩大
　　4 下到上刷新
　　5 上到下刷新
　　6 左到右刷新
　　7 右到左刷新
　　8 竖百叶窗
　　9 横百叶窗
　　10 错位横百叶窗
　　11 错位竖百叶窗
　　12 点扩散
　　13 左右到中间刷新
　　14 中间到左右刷新
　　15 中间到上下
　　16 上下到中间
　　17 右下到左上
　　18 右上到左下
　　19 左上到右下
　　20 左下到右上
　　21 横条
　　22 竖条
　　23 以上22种随机选择一种

//网页是否被检索
<meta name="ROBOTS" content="属性值">
　　其中属性值有以下一些:
　　属性值为"all": 文件将被检索，且页上链接可被查询；
　　属性值为"none": 文件不被检索，而且不查询页上的链接；
　　属性值为"index": 文件将被检索；
　　属性值为"follow": 查询页上的链接；
　　属性值为"noindex": 文件不检索，但可被查询链接；
　　属性值为"nofollow": 文件不被检索，但可查询页上的链接。

//打印分页
<p style="page-break-after:always">page1</p>
<p style="page-break-after:always">page2</p>

//设置打印
<object id="factory" style="display:none" viewastext
classid="clsid:1663ed61-23eb-11d2-b92f-008048fdd814"
codebase="http://www.meadroid.com/scriptx/ScriptX.cab#Version=5,60,0,360"
></object>

<input type=button value=页面设置 onclick="factory.printing.PageSetup()">
<input type=button value=打印预览 onclick="factory.printing.Preview()">

<script language=javascript>
function window.onload()
{
   // -- advanced features
   factory.printing.SetMarginMeasure(2) // measure margins in inches
   factory.printing.SetPageRange(false, 1, 3) // need pages from 1 to 3
   factory.printing.printer = "HP DeskJet 870C"
   factory.printing.copies = 2
   factory.printing.collate = true
   factory.printing.paperSize = "A4"
   factory.printing.paperSource = "Manual feed"

   // -- basic features
   factory.printing.header = "居左显示&b居中显示&b居右显示页码，第&p页/共&P页"
   factory.printing.footer = "（自定义页脚）"
   factory.printing.portrait = false
   factory.printing.leftMargin = 0.75
   factory.printing.topMargin = 1.5
   factory.printing.rightMargin = 0.75
   factory.printing.bottomMargin = 1.5
}
function Print(frame) {
factory.printing.Print(true, frame) // print with prompt
}
</script>
<input type=button value="打印本页" onclick="factory.printing.Print(false)">
<input type=button value="页面设置" onclick="factory.printing.PageSetup()">
<input type=button value="打印预览" onclick="factory.printing.Preview()"><br>
<a href="http://www.meadroid.com/scriptx/docs/printdoc.htm?static" target=_blank>具体使用手册，更多信息，点这里</a>

//自带的打印预览

//去掉打印时的页眉页脚
<script language="JavaScript">
var HKEY_Root,HKEY_Path,HKEY_Key;
HKEY_Root="HKEY_CURRENT_USER";
HKEY_Path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\";
//设置网页打印的页眉页脚为空
function PageSetup_Null()
{
try
{
        var Wsh=new ActiveXObject("WScript.Shell");
  HKEY_Key="header";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");
  HKEY_Key="footer";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");
}
catch(e){}
}
//设置网页打印的页眉页脚为默认值
function PageSetup_Default()
{
try
{
  var Wsh=new ActiveXObject("WScript.Shell");
  HKEY_Key="header";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&w&b页码,&p/&P");
  HKEY_Key="footer";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&u&b&d");
}
catch(e){}
}
</script>
<input type="button" value="清空页码" onclick=PageSetup_Null()>
<input type="button" value="恢复页码" onclick=PageSetup_Default()>

//文本框的默认值
<input type=text value="123" onfocus="alert(this.defaultValue)">

//浏览器验证
function checkBrowser()
{
   this.ver=navigator.appVersion
   this.dom=document.getElementById?1:0
   this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;
   this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
   this.ie4=(document.all && !this.dom)?1:0;
   this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
   this.ns4=(document.layers && !this.dom)?1:0;
   this.mac=(this.ver.indexOf('Mac') > -1) ?1:0;
   this.ope=(navigator.userAgent.indexOf('Opera')>-1);
   this.ie=(this.ie6 || this.ie5 || this.ie4)
   this.ns=(this.ns4 || this.ns5)
   this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns5 || this.ns4 || this.mac || this.ope)
   this.nbw=(!this.bw)

return this;
}

//计算内容宽和高
<SCRIPT language="javascript">
function test(obj)
{
       var range = obj.createTextRange();
       alert("内容区宽度: " + range.boundingWidth
                                                 + "px\r\n内容区高度: " + range.boundingHeight + "px");

}
</SCRIPT>
<BODY>
<Textarea id="txt" height="150">sdf</textarea><INPUT type="button" value="计算内容宽度" onClick="test(txt)">
</BODY>

//无模式的提示框
function modelessAlert(Msg)
{
window.showModelessDialog("javascript:alert(\""+escape(Msg)+"\");window.close();","","status:no;resizable:no;help:no;dialogHeight:height:30px;dialogHeight:40px;");
}

//获得时间所代表的微秒
var n1 = new Date("2004-10-10".replace(/-/g, "\/")).getTime()

//窗口是否关闭
win.closed

//checkbox扁平
<input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br>

//屏蔽按键

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript>
<title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title>
</head>
<body>

function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠标右键
function window.onhelp(){return false} //屏蔽F1帮助
function document.onkeydown()
{
if ((window.event.altKey)&&
      ((window.event.keyCode==37)||   //屏蔽 Alt+ 方向键 ←
       (window.event.keyCode==39)))   //屏蔽 Alt+ 方向键 →
{
     alert("不准你使用ALT+方向键前进或后退网页！");
     event.returnValue=false;
}
     /* 注：这还不是真正地屏蔽 Alt+ 方向键，
     因为 Alt+ 方向键弹出警告框时，按住 Alt 键不放，
     用鼠标点掉警告框，这种屏蔽方法就失效了。以后若
     有哪位高手有真正屏蔽 Alt 键的方法，请告知。*/

if ((event.keyCode==8) ||                 //屏蔽退格删除键
      (event.keyCode==116)||                 //屏蔽 F5 刷新键
      (event.ctrlKey && event.keyCode==82)){ //Ctrl + R
     event.keyCode=0;
     event.returnValue=false;
     }
if (event.keyCode==122){event.keyCode=0;event.returnValue=false;} //屏蔽F11
if (event.ctrlKey && event.keyCode==78) event.returnValue=false;   //屏蔽 Ctrl+n
if (event.shiftKey && event.keyCode==121)event.returnValue=false; //屏蔽 shift+F10
if (window.event.srcElement.tagName == "A" && window.event.shiftKey)
      window.event.returnValue = false;             //屏蔽 shift 加鼠标左键新开一网页
if ((window.event.altKey)&&(window.event.keyCode==115))             //屏蔽Alt+F4
{
      window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
      return false;
}
}
</script>
屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键

</body>
</html>

//移动的图层
1.<span style='position:absolute;width:200;height:200;background:red' onmousedown=MouseDown(this) onmousemove=MouseMove() onmouseup=MouseUp()>meizz</span>
<script language=javascript>
var Obj;
function MouseDown(obj)
{
Obj=obj;
Obj.setCapture();
Obj.l=event.x-Obj.style.pixelLeft;
Obj.t=event.y-Obj.style.pixelTop;
}
function MouseMove()
{
if(Obj!=null)
{
    Obj.style.left = event.x-Obj.l;
    Obj.style.top = event.y-Obj.t;
}
}
function MouseUp()
{
if(Obj!=null)
{
    Obj.releaseCapture();
    Obj=null;
}
}
</script>

2.
<div id="myDiv" src="logo.gif" ondrag="doDrag();" onmouseover="this.style.cursor='hand'" style="position:absolute;left=100;top=100;" onmousedown="doMouseDown();">
<a href="#" onclick="return false"><h1>wlecome</h1></a>
</div>
<script language="JavaScript" type="text/javascript">
var orgMouseX;
var orgMouseY;
var orgObjX;
var orgObjY;

function doDrag()
{
var myObject=document.all.myDiv;

var x=event.clientX;
var y=event.clientY;
myObject.style.left=x-(orgMouseX-orgObjX);
myObject.style.top=y-(orgMouseY-orgObjY);

}
function doMouseDown()
{
orgMouseX=event.clientX;
orgMouseY=event.clientY;
orgObjX=parseInt(document.all.myDiv.style.left);
orgObjY=parseInt(document.all.myDiv.style.top);

}

</script>

//自动完成功能
<input type=text autocomplete=on>打开该功能
<input type=text autocomplete=off>关闭该功能

//窗口最大化
<body onload="window.resizeTo(window.screen.width - 4,window.screen.height-50);window.moveTo(-4,-4)">

//无关闭按钮IE
window.open("aa.htm", "meizz", "fullscreen=7");

//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>

//透明背景
<IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe>

//获得style内容
style.cssText

//HTML标签
document.documentElement.innerHTML

//第一个style标签
document.styleSheets[0]

//style标签里的第一个样式
document.styleSheets[0].rules[0]

//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")

//统一编码/解码
alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe")))
encodeURIComponent对":"、"/"、";" 和 "?"也编码

//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[i].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[i] = "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[i];
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);
  }
}
}

//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;
}

//获取选中内容
document.selection.createRange().duplicate().text

//连接数据库
<script language="JavaScript">
<!--
var conn = new ActiveXObject( "ADODB.Connection" );
var str="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\db1.mdb;Persist Security Info=False";
conn.ConnectionString=str;
conn.Open();

//-->
</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()">

</body>
</html>

//获得参数
<body>
<a href="javascript:location.href=location.href + '?a=1&b=2'">search</a>
<script language="JavaScript">

</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 rang = document.selection.createRange();
rang.setEndPoint("StartToStart",textbox.createTextRange());

return rang.text.length;
}

function setCaret(textbox,pos)
{
try
{
  var r =textbox.createTextRange();
   r.moveStart('character',pos);
   r.collapse(true);
   r.select();
}
catch(e)
{}
}

posted on 2005-01-14 17:27 stretch 阅读(954) 评论(0) 编辑收藏举报

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