js小技巧(二)
//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; }
//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.}; 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()" >
转自:http://www.cnblogs.com/ttyp/archive/2004/11/15/63900.html
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