javascript 小技巧(2)
//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; }
//书
http://www.itpub.net/attachment.php?s=&postid=1894598 http://www.wrclub.net/down/listdown.aspx?id=1341//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
//判断键值
//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
//检测media play版本
//图象按比例
//细线SELECT
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,"$2"); ??alert(b); //--> </SCRIPT>//mergeAttributes 复制所有读/写标签属性到指定元素。
<SCRIPT> function?fnMerge(){ oSource.children[1].mergeAttributes(oSource.children[0]); } </SCRIPT> <SPAN?ID=oSource> <DIV ID="oDiv" ATTRIBUTE1="true" ATTRIBUTE2="true" onclick="alert('click');" onmouseover="this.style.color='#0000FF';" onmouseout="this.style.color='#000000';" > This?is?a?sample?<B>DIV</B>?element. </DIV> <DIV?ID="oDiv2"> This?is?another?sample?<B>DIV</B>?element. </DIV> </SPAN> <INPUT TYPE="button" VALUE="Merge?Attributes" onclick="fnMerge()" >以上内容可以随意转载，转载后请注名来源和出处！
<span?style="border:1px?solid?#000000;?position:absolute;?overflow:hidden;"?> <select?style="margin:-2px;"> <option>1111</option> <option>11111111111111</option> <option>111111111</option> </select></span>//Import
function?Import()?{ ?for(?var?i=0;?i<arguments.length;?i++?)?{ ??var?file?=?arguments[i]; ??if?(?file.match(/\.js$/i))? ???document.write('<script?type=\"text/javascript\"?src=\"'?+?file?+?'\"></sc'?+?'ript>'); ??else ???document.write('<style?type=\"text/css\">@import?\"'?+?file?+?'\"?;</style>'); ?} };//js枚举
<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)">?
<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>?
<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> <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> doc?=?new?ActiveXObject("Msxml2.DOMDocument"); doc?=?new?ActiveXObject("Microsoft.XMLDOM") ->> doc?=?(new?DOMParser()).parseFromString(sXML,'text/xml') 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
(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"); <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> <p??style="page-break-after:always">page1</p>?? <p??style="page-break-after:always">page2</p>?? <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":? <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()>? <META?HTTP-EQUIV="pragma"?CONTENT="no-cache"> <META?HTTP-EQUIV="Cache-Control"?CONTENT="no-cache,?must-revalidate"> <META?HTTP-EQUIV="expires"?CONTENT="0"> <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)"> <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">< type="text/javascript">< type="text/javascript"src="http://pagead2.googlesyndication.com/pagead/show_ads.js">