Javascript 技巧大全

原文:http://hzjavaeyer.group.javaeye.com/group/blog/209022

 

 

Event 事件 

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 

document 对象 

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

插件数目 
navigator.plugins 
取变量类型 
typeof($js_libpath) == "undefined" 
下拉框 
下拉框.options[索引] 
下拉框.options.length 
查找对象 
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) 
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" 
让英文字符串超出表格宽度自动换行 
word-wrap: break-word; word-break: break-all; 
框架透明背景 
<iframe src="1.htm" width=300 height=180 allowtransparency></iframe> 
获得style内容 
obj.style.cssText 

自动刷新 
<meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://www.playes.net"> 
简单邮件 
<a href="mailto:[email protected]?subject=ccc&body=xxxyyy">MailMe</a> 
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(); 
可编辑 
obj.contenteditable=true 
执行菜单命令 
obj.execCommand 
双字节字符 
/[^/x00-/xff]/ 
汉字 
/[/u4e00-/u9fa5]/ 
防止点击空链接时,页面往往重置到页首端 
<a href="javascript:function()">word</a> 

上一网页源 
asp:request.servervariables("HTTP_REFERER") 
javascript:document.referrer 
释放内存 
CollectGarbage(); 
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/'"> 
关闭输入法 
<input style="ime-mode:disabled"> 
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"> 
文本框的默认值 
<input type=text value="123" onfocus="alert(this.defaultValue)"> 
checkbox扁平 
<input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br> 
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 

title换行 
obj.title = "123&#13sdfs&#32" 
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 
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"); 
统一编码/解码 
alert(decodeURIComponent(encodeURIComponent("http://www.baidu.com/s?wd=阿飞"))) 
encodeURIComponent对":"、"/"、";" 和 "?"也编码 
表格行指示 
<tr onmouseover="this.bgColor='#f0f0f0'" onmouseout="this.bgColor='#ffffff'"> 

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 

<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=导入收藏夹 onclick="window.external.ImportExportFavorites(true,'http://www.google.com/');"> 
<input type=button value=导出收藏夹 onclick="window.external.ImportExportFavorites(false,'http://www.google.com/');"> 
<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"> 

正则匹配 

匹配中文字符的正则表达式: [/u4e00-/u9fa5] 
匹配双字节字符(包括汉字在内):[^/x00-/xff] 
匹配空行的正则表达式:/n[/s| ]*/r 
匹配HTML标记的正则表达式:/<(.*)>.*<///1>|<(.*) //>/ 
匹配首尾空格的正则表达式:(^/s*)|(/s*$)(像vbscript那样的trim函数) 
匹配Email地址的正则表达式:/w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)* 
匹配网址URL的正则表达式:http://([/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)? 

以下是例子: 
利用正则表达式限制网页表单里的文本框输入内容: 
用正则表达式限制只能输入中文:onkeyup="value=value.replace(/[^/u4E00-/u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/u4E00-/u9FA5]/g,''))" 
1. 用正则表达式限制只能输入全角字符: onkeyup="value=value.replace(/[^/uFF00-/uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/uFF00-/uFFFF]/g,''))" 
2. 用正则表达式限制只能输入数字:onkeyup="value=value.replace(/[^/d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))" 
3. 用正则表达式限制只能输入数字和英文:onkeyup="value=value.replace(/[/W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))" 

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> 

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() 
   } 


取得控件得绝对位置 

<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> 

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

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()"> 

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 

网页是否允许被搜索引擎机器人检索 

<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": 全部不允许。 

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 

WebBrowser.ExecWB(1,1) 打开 
Web.ExecWB(2,1) 关闭现在所有的IE窗口,并打开一个新窗口 
Web.ExecWB(4,1) 保存网页 
Web.ExecWB(6,1) 打印 
Web.ExecWB(7,1) 打印预览 
Web.ExecWB(8,1) 打印页面设置 
Web.ExecWB(10,1) 查看页面属性 
Web.ExecWB(15,1) 好像是撤销,有待确认 
Web.ExecWB(17,1) 全选 
Web.ExecWB(22,1) 刷新 
Web.ExecWB(45,1) 关闭窗体无提示 
<style media=print> 
.Noprint{display:none;}<!--用本样式在打印时隐藏非打印项目--> 
.PageNext{page-break-after: always;}<!--控制分页--> 
</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=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)> 
</p> 
<p> <input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)> 
</center> 

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()> 

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;");


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> 
<script language="Javascript"><!-- 
  //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键 
  //Author: meizz(梅花雨) 2002-6-18 
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> 

屏蔽打印 

<style> 
@media print{ 
* {display:none} 

</style> 

移动的图层/拖动 

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 

(1)拖拽访问 
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[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); 
  } 



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 

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[i]); 
  alert(s[i].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') 

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> 

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> 

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[i]; 
    } 
     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[i]; 
  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()"> 

文章挺全面。不过实际上由于版本的差异和兼容、安全性对脚本的苛刻要求,很多代码已经失去应有的效果。但依然具有其研究很收藏的价值!!!

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