北大青鳥(niǎo)前端課程精華:javascript技巧大全套



javascript技巧大全套,收集的比較全!


事件源對(duì)象
event.srcElement.tagName
event.srcElement.type
捕獲釋放
event.srcElement.setCapture();
event.srcElement.releaseCapture();
事件按鍵
event.keyCode
event.shiftKey
event.altKey
event.ctrlKey
事件返回值
event.returnValue
鼠標(biāo)位置
event.x
event.y
窗體活動(dòng)元素
document.activeElement
綁定事件
document.captureEvents(Event.KEYDOWN);
訪問(wèn)窗體元素
document.all("txt").focus();
document.all("txt").select();
窗體命令
document.execCommand
窗體COOKIE
document.cookie
菜單事件
document.oncontextmenu
創(chuàng)建元素
document.createElement("SPAN");
根據(jù)鼠標(biāo)獲得元素:
document.elementFromPoint(event.x,event.y).tagName=="TD
document.elementFromPoint(event.x,event.y).appendChild(ms)
窗體圖片
document.images[索引]
窗體事件綁定
document.onmousedown=scrollwindow;
元素
document.窗體.elements[索引]
對(duì)象綁定事件
document.all.xxx.detachEvent('onclick',a);
插件數(shù)目
navigator.plugins
取變量類型
typeof($js_libpath) == "undefined"
下拉框
下拉框.options[索引]
下拉框.options.length
查找對(duì)象
document.getElementsByName("r1");
document.getElementById(id);
定時(shí)
timer=setInterval('scrollwindow()',delay);
clearInterval(timer);
UNCODE編碼
escape() ,unescape
父對(duì)象
obj.parentElement(dhtml)
obj.parentNode(dom)
交換表的行
TableID.moveRow(2,1)
替換CSS
document.all.csss.href = "a.css";
并排顯示
display:inline
隱藏焦點(diǎn)
hidefocus=true
根據(jù)寬度換行
style="word-break:break-all"
自動(dòng)刷新
<meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net">
簡(jiǎn)單郵件
<a  href="mailto:aaa@bbb.com?subject=ccc&body=xxxyyy">
快速轉(zhuǎn)到位置
obj.scrollIntoView(true)

<a name="first">
<a href="#first">anchors</a>
網(wǎng)頁(yè)傳遞參數(shù)
location.search();
可編輯
obj.contenteditable=true
執(zhí)行菜單命令
obj.execCommand
雙字節(jié)字符
/[^\x00-\xff]/
漢字
/[\u4e00-\u9fa5]/
讓英文字符串超出表格寬度自動(dòng)換行
word-wrap: break-word; word-break: break-all;
透明背景
<IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe>
獲得style內(nèi)容
obj.style.cssText
HTML標(biāo)簽
document.documentElement.innerHTML
第一個(gè)style標(biāo)簽
document.styleSheets[0]
style標(biāo)簽里的第一個(gè)樣式
document.styleSheets[0].rules[0]
防止點(diǎn)擊空鏈接時(shí),頁(yè)面往往重置到頁(yè)首端。
<a href="javascript:function()">word</a>
上一網(wǎng)頁(yè)源
asp:
request.servervariables("HTTP_REFERER")
javascript:
document.referrer
釋放內(nèi)存
CollectGarbage();
禁止右鍵
document.oncontextmenu = function() { return false;}
禁止保存
<noscript><iframe src="*.htm"></iframe></noscript>
禁止選取<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()>
禁止粘貼
<input type=text onpaste="return false">
地址欄圖標(biāo)
<link rel="Shortcut Icon" href="favicon.ico">
favicon.ico 名字最好不變16*16的16色,放虛擬目錄根目錄下
收藏欄圖標(biāo)
<link rel="Bookmark" href="favicon.ico">
查看源碼
<input type=button value=查看網(wǎng)頁(yè)源代碼 onclick="window.location = 'view-source:'+ 'http://www.csdn.net/'">
關(guān)閉輸入法
<input style="ime-mode:disabled">
自動(dòng)全選
<input type=text name=text1 value="123" onfocus="this.select()">
ENTER鍵可以讓光標(biāo)移到下一個(gè)輸入框
<input onkeydown="if(event.keyCode==13)event.keyCode=9">
文本框的默認(rèn)值
<input type=text value="123" onfocus="alert(this.defaultValue)">
title換行
obj.title = "123 sdfs "
獲得時(shí)間所代表的微秒
var n1 = new Date("2004-10-10".replace(/-/g, "\/")).getTime()
窗口是否關(guān)閉
win.closed
checkbox扁平
<input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br>
獲取選中內(nèi)容
document.selection.createRange().duplicate().text
自動(dòng)完成功能
<input  type=text  autocomplete=on>打開(kāi)該功能
<input  type=text  autocomplete=off>關(guān)閉該功能
窗口最大化
<body onload="window.resizeTo(window.screen.width - 4,window.screen.height-50);window.moveTo(-4,-4)">
無(wú)關(guān)閉按鈕IE
window.open("aa.htm", "meizz", "fullscreen=7");
統(tǒng)一編碼/解碼
alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe")))
encodeURIComponent對(duì)":"、"/"、";" 和 "?"也編碼
表格行指示
<tr onmouseover="this.bgColor='#f0f0f0'" onmouseout="this.bgColor='#ffffff'">

//各種尺寸

s  +=  "\r\n網(wǎng)頁(yè)可見(jiàn)區(qū)域?qū)挘?+  document.body.clientWidth;
s  +=  "\r\n網(wǎng)頁(yè)可見(jiàn)區(qū)域高:"+  document.body.clientHeight;
s  +=  "\r\n網(wǎng)頁(yè)可見(jiàn)區(qū)域高:"+  document.body.offsetWeight  +"  (包括邊線的寬)";
s  +=  "\r\n網(wǎng)頁(yè)可見(jiàn)區(qū)域高:"+  document.body.offsetHeight  +"  (包括邊線的寬)";
s  +=  "\r\n網(wǎng)頁(yè)正文全文寬:"+  document.body.scrollWidth;
s  +=  "\r\n網(wǎng)頁(yè)正文全文高:"+  document.body.scrollHeight;
s  +=  "\r\n網(wǎng)頁(yè)被卷去的高:"+  document.body.scrollTop;
s  +=  "\r\n網(wǎng)頁(yè)被卷去的左:"+  document.body.scrollLeft;
s  +=  "\r\n網(wǎng)頁(yè)正文部分上:"+  window.screenTop;
s  +=  "\r\n網(wǎng)頁(yè)正文部分左:"+  window.screenLeft;
s  +=  "\r\n屏幕分辨率的高:"+  window.screen.height;
s  +=  "\r\n屏幕分辨率的寬:"+  window.screen.width;
s  +=  "\r\n屏幕可用工作區(qū)高度:"+  window.screen.availHeight;
s  +=  "\r\n屏幕可用工作區(qū)寬度:"+  window.screen.availWidth;
//過(guò)濾數(shù)字

<input type=text onkeypress="return event.keyCode>=48&&event.keyCode<=57||(this.value.indexOf('.')<0?event.keyCode==46:false)" onpaste="return !clipboardData.getData('text').match(/\D/)" ondragenter="return false">


//特殊用途

<input type=button value=導(dǎo)入收藏夾 onclick="window.external.ImportExportFavorites(true,'http://localhost');">
<input type=button value=導(dǎo)出收藏夾 onclick="window.external.ImportExportFavorites(false,'http://localhost');">
<input type=button value=整理收藏夾 onclick="window.external.ShowBrowserUI('OrganizeFavorites', null)">
<input type=button value=語(yǔ)言設(shè)置   onclick="window.external.ShowBrowserUI('LanguageDialog', null)">
<input type=button value=加入收藏夾 onclick="window.external.AddFavorite('http://www.google.com/', 'google')">
<input type=button value=加入到頻道 onclick="window.external.addChannel('http://www.google.com/')">
<input type=button value=加入到頻道 onclick="window.external.showBrowserUI('PrivacySettings',null)">


//不緩存

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

 

 


//正則匹配


匹配中文字符的正則表達(dá)式: [\u4e00-\u9fa5]
匹配雙字節(jié)字符(包括漢字在內(nèi)):[^\x00-\xff]
匹配空行的正則表達(dá)式:\n[\s| ]*\r
匹配HTML標(biāo)記的正則表達(dá)式:/<(.*)>.*<\/\1>|<(.*) \/>/
匹配首尾空格的正則表達(dá)式:(^\s*)|(\s*$)(像vbscript那樣的trim函數(shù))
匹配Email地址的正則表達(dá)式:\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
匹配網(wǎng)址URL的正則表達(dá)式:http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?
以下是例子:
利用正則表達(dá)式限制網(wǎng)頁(yè)表單里的文本框輸入內(nèi)容:
用正則表達(dá)式限制只能輸入中文:onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))"
1.用正則表達(dá)式限制只能輸入全角字符: onkeyup="value=value.replace(/[^\uFF00-\uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\uFF00-\uFFFF]/g,''))"
2.用正則表達(dá)式限制只能輸入數(shù)字:onkeyup="value=value.replace(/[^\d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"
3.用正則表達(dá)式限制只能輸入數(shù)字和英文:onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"
//消除圖像工具欄

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


//無(wú)提示關(guān)閉


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()
   }
}
//取得控件得絕對(duì)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
}
</script>
//獲得控件的絕對(duì)位置(2)

oRect = obj.getBoundingClientRect();
oRect.left
oRect.
//最小化,最大化,關(guān)閉

<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>
<input type=button value=最小化 onclick=min.Click()>
<input type=button value=最大化 onclick=max.Click()>
<input type=button value=關(guān)閉 onclick=close.Click()>

 

 

//光標(biāo)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()">
//頁(yè)面進(jìn)入和退出的特效


進(jìn)入頁(yè)面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">
推出頁(yè)面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">
這個(gè)是頁(yè)面被載入和調(diào)出時(shí)的一些特效。duration表示特效的持續(xù)時(shí)間,以秒為單位。transition表示使
用哪種特效,取值為1-23:
  0 矩形縮小
  1 矩形擴(kuò)大
  2 圓形縮小
  3 圓形擴(kuò)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 豎百葉窗
  9 橫百葉窗
  10 錯(cuò)位橫百葉窗
  11 錯(cuò)位豎百葉窗
  12 點(diǎn)擴(kuò)散
  13 左右到中間刷新
  14 中間到左右刷新
  15 中間到上下
  16 上下到中間
  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 橫條
  22 豎條
  23
//網(wǎng)頁(yè)是否被檢索

<meta name="ROBOTS" content="屬性值">
  其中屬性值有以下一些:
  屬性值為"all": 文件將被檢索,且頁(yè)上鏈接可被查詢;
  屬性值為"none": 文件不被檢索,而且不查詢頁(yè)上的鏈接;
  屬性值為"index": 文件將被檢索;
  屬性值為"follow": 查詢頁(yè)上的鏈接;
  屬性值為"noindex": 文件不檢索,但可被查詢鏈接;
  屬性值為"nofollow":

 

//打印分頁(yè)

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

 

//設(shè)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=頁(yè)面設(shè)置 onclick="factory.printing.PageSetup()">
<input type=button value=打印預(yù)覽 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 = "居左顯示&b居中顯示&b居右顯示頁(yè)碼,第&p頁(yè)/共&P頁(yè)"
   factory.printing.footer = "(自定義頁(yè)腳)"
   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="打印本頁(yè)" onclick="factory.printing.Print(false)">
<input type=button value="頁(yè)面設(shè)置" onclick="factory.printing.PageSetup()">
<input type=button value="打印預(yù)覽" onclick="factory.printing.Preview()"><br>
<a   target=_blank>具體使用手冊(cè),更多信息,點(diǎn)這里</a>

//自帶的打印預(yù)覽

WebBrowser.ExecWB(1,1) 打開(kāi)
Web.ExecWB(2,1) 關(guān)閉現(xiàn)在所有的IE窗口,并打開(kāi)一個(gè)新窗口
Web.ExecWB(4,1) 保存網(wǎng)頁(yè)
Web.ExecWB(6,1) 打印
Web.ExecWB(7,1) 打印預(yù)覽
Web.ExecWB(8,1) 打印頁(yè)面設(shè)置
Web.ExecWB(10,1) 查看頁(yè)面屬性
Web.ExecWB(15,1) 好像是撤銷,有待確認(rèn)
Web.ExecWB(17,1) 全選
Web.ExecWB(22,1) 刷新
Web.ExecWB(45,1) 關(guān)閉窗體無(wú)提示
<style media=print>
.Noprint{display:none;}<!--用本樣式在打印時(shí)隱藏非打印項(xiàng)目-->
.PageNext{page-break-after: always;}<!--控制分頁(yè)-->
</style>
<object  id="WebBrowser"  width=0  height=0  classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2">
</object>

<center class="Noprint" >
<input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)>
<input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)>
<input type=button value=頁(yè)面設(shè)置 onclick=document.all.WebBrowser.ExecWB(8,1)>
</p>
<p> <input type=button value=打印預(yù)覽 onclick=document.all.WebBrowser.ExecWB(7,1)>
</center>
//去掉打印時(shí)的頁(yè)眉頁(yè)腳


<script  language="JavaScript">
var HKEY_Root,HKEY_Path,HKEY_Key;
HKEY_Root="HKEY_CURRENT_USER";
HKEY_Path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\";
//設(shè)置網(wǎng)頁(yè)打印的頁(yè)眉頁(yè)腳為空
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){}
}
//設(shè)置網(wǎng)頁(yè)打印的頁(yè)眉頁(yè)腳為默認(rèn)值
function  PageSetup_Default()
{
 try
 {
  var Wsh=new ActiveXObject("WScript.Shell");
  HKEY_Key="header";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&w&b頁(yè)碼,&p/&P");
  HKEY_Key="footer";
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&u&b&d");
 }
 catch(e){}
}
</script>
<input type="button" value="清空頁(yè)碼" onclick=PageSetup_Null()>
<input type="button" value="恢復(fù)頁(yè)碼" onclick=PageSetup_Default()>
//瀏覽器驗(yàn)證


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;
}
//計(jì)算內(nèi)容寬和高

<SCRIPT  language="javascript">
function  test(obj)
{
       var  range  =  obj.createTextRange();
       alert("內(nèi)容區(qū)寬度:  "  +  range.boundingWidth
                                                 +  "px\r\n內(nèi)容區(qū)高度:  "  +  range.boundingHeight  +  "px");

}
</SCRIPT>
<BODY>
<Textarea id="txt" height="150">sdf</textarea><INPUT  type="button"  value="計(jì)算內(nèi)容寬度"  onClick="test(txt)">
</BODY>
//無(wú)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;");
}

 

 

 

//屏蔽按鍵


<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
  <noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript>
  <title>屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格鍵</title>
</head>
<body>
<script language="Javascript"><!--
  //屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、F11、F5刷新、退格鍵
  //Author: meizz(梅花雨) 2002-6-18
function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠標(biāo)右鍵
function window.onhelp(){return false} //屏蔽F1幫助
function document.onkeydown()
{
  if ((window.event.altKey)&&
      ((window.event.keyCode==37)||   //屏蔽 Alt+ 方向鍵 ←
       (window.event.keyCode==39)))   //屏蔽 Alt+ 方向鍵 →
  {
     alert("不準(zhǔn)你使用ALT+方向鍵前進(jìn)或后退網(wǎng)頁(yè)!");
     event.returnValue=false;
  }
     /* 注:這還不是真正地屏蔽 Alt+ 方向鍵,
     因?yàn)?Alt+ 方向鍵彈出警告框時(shí),按住 Alt 鍵不放,
     用鼠標(biāo)點(diǎn)掉警告框,這種屏蔽方法就失效了。以后若
     有哪位高手有真正屏蔽 Alt 鍵的方法,請(qǐng)告知。*/
  if ((event.keyCode==8)  ||                 //屏蔽退格刪除鍵
      (event.keyCode==116)||                 //屏蔽 F5 刷新鍵
      (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 加鼠標(biāo)左鍵新開(kāi)一網(wǎng)頁(yè)
  if ((window.event.altKey)&&(window.event.keyCode==115))             //屏蔽Alt+F4
  {
      window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
      return false;
  }
}
</script>
屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格鍵
</body>
</html>
//屏蔽打印
<style>
@media print{
* {display:none}
}
</style>

//移動(dòng)的圖層,拖動(dòng)


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>

//文檔狀態(tài)改變


<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>

//刷新后不變的文本框

<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>


//訪問(wèn)剪貼板

(1)拖拽訪問(wèn)
event.dataTransfer.setData("URL", oImage.src);
sImageURL = event.dataTransfer.getData("URL")
(2)普通訪問(wèn)
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[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增加參數(shù)

<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>

//自定義的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);
};

//下載文件

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("下載URL出錯(cuò)!");
 }
 //window.confirm("下載完成.");
}

//檢驗(yàn)連接是否有效

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?cái)?shù)據(jù)的進(jìn)度,0=載入中,1=未初始化,2=已載入,3=運(yùn)行中,4=完成

 

 

//組件是否安裝
isComponentInstalled("{6B053A4B-A7EC-4D3D-4567-B8FF8A1A5739}", "componentID"))

//檢查網(wǎng)頁(yè)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;
}
//連接數(shù)據(jù)庫(kù)


<script language="javascript">
  //用 JavaScript 寫(xiě)服務(wù)器端連接數(shù)據(jù)庫(kù)的代碼示例
  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>
//使用數(shù)據(jù)島


<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="<< 第一條記錄" onclick="xmldate.recordset.moveFirst()">
<input id="prev" TYPE=button value="<上一條記錄" onclick="xmldate.recordset.movePrevious()">
<input id="next" TYPE=button value="下一條記錄>" onclick="xmldate.recordset.moveNext()">
<input id="last" TYPE=button value="最后一條記錄>>" onclick="xmldate.recordset.moveLast()">
<input id="Add" TYPE=button value="添加新記錄" 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點(diǎn)22分0秒</times></info>
</infolist>
</XML>
</body>
</html>
//獲得參數(shù)

<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[i]);
  alert(s[i].split("=")[1]);
 }
}
//-->
</script>
</body>


//可編輯SELECT
//屏幕顯示比例調(diào)整后會(huì)有些bug
<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>

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