Javascript 技巧大全 -- lovebugs-- 编程爱好者博客

Event 事件事件源对象event.srcElement.tagNameevent.srcElement.type捕获释放event.srcElement.setCapture();event.srcElement.releaseCapture();事件按键event.keyCodeevent.shiftKeyevent.altKeyevent.ctrlKey事件返回值event.returnValue鼠标位置event.xevent.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COOKIEdocument.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CSSdocument.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:aaa@bbb.com?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IEwindow.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;}.PageNext{page-break-after: always;}</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"></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.dyclasselse 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-24else popLeftAdjust=0;if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24else 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.dll2.修改PROGIDHKEY_CLASSES_ROOT\Scripting.FileSystemObjectScripting.FileSystemObject3.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"></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"></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()">

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Javascript 技巧大全2008-10-13 17:50:00

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