javascript技巧大全

技术2022-05-11 54

Event 事件

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.οnmοusedοwn=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 οncοntextmenu="return false" οndragstart="return false" onselectstart ="return false" οnselect="document.selection.empty()" οncοpy="document.selection.empty()" onbeforecopy="return false"οnmοuseup="document.selection.empty()>禁止粘贴<input type=text οnpaste="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" οnclick="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" οnfοcus="this.select()">ENTER键可以让光标移到下一个输入框<input οnkeydοwn="if(event.keyCode==13)event.keyCode=9">文本框的默认值<input type=text value="123" οnfοcus="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 sdfs "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 οnlοad="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 οnmοuseοver="this.bgColor='#f0f0f0'" οnmοuseοut="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 οnkeypress="return event.keyCode>=48&&event.keyCode<=57||(this.value.indexOf('.')<0?event.keyCode==46:false)" οnpaste="return !clipboardData.getData('text').match(//D/)" οndragenter="return false">

特殊用途

不缓存

正则匹配

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：οnkeyup="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： οnkeyup="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：οnkeyup="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：οnkeyup="value=value.replace(/[/W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))"

消除图像工具栏

无提示关闭

取得控件得绝对位置

最小化,最大化,关闭

光标停在文字最后

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

打印分页

设置打印

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 οnclick=document.all.WebBrowser.ExecWB(6,1)><input type=button value=直接打印 οnclick=document.all.WebBrowser.ExecWB(6,6)><input type=button value=页面设置 οnclick=document.all.WebBrowser.ExecWB(8,1)></p><p> <input type=button value=打印预览 οnclick=document.all.WebBrowser.ExecWB(7,1)></center>

去掉打印时的页眉页脚

设置网页打印的页眉页脚为默认值

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) 2002-6-18function 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

移动的图层/拖动

2.<div id="myDiv" src="logo.gif" οndrag="doDrag();" οnmοuseοver="this.style.cursor='hand'" style="position:absolute;left=100;top=100;" οnmοusedοwn="doMouseDown();"><a href="#" οnclick="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

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

setTimeout增加参数

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

检验连接是否有效

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 = strReturnEnd FunctionFunction 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 = strReturnEnd Functiondim strA,oReqstrA = URLEncoding("submit1=Submit&text1=中文")set oReq = CreateObject("MSXML2.XMLHTTP")oReq.open "POST","http://ServerName/VDir/TstResult.asp",falseoReq.setRequestHeader "Content-Length",Len(strA)oReq.setRequestHeader "CONTENT-TYPE","application/x-www-form-urlencoded"oReq.send strAmsgbox 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

连接数据库

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" οnclick="xmldate.recordset.moveFirst()"><input id="prev" TYPE=button value="<上一条记录" οnclick="xmldate.recordset.movePrevious()"><input id="next" TYPE=button value="下一条记录>" οnclick="xmldate.recordset.moveNext()"><input id="last" TYPE=button value="最后一条记录>>" οnclick="xmldate.recordset.moveLast()"><input id="Add" TYPE=button value="添加新记录" οnclick="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"></script></body>

可编辑SELECT

设置光标位置

页内查找

操作EXECL

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.οnmοuseοver=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

细线SELECT

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

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" οnclick="alert('click');" οnmοuseοver="this.style.color='#0000FF';" οnmοuseοut="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" οnclick="fnMerge()">

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 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.οnmοusedοwn=scrollwindow; 元素 document.窗体.elements[索引] 对象绑定事件 document.all.xxx.detachEvent('onclick',a); 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" 自动刷新 <meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net"> 简单邮件 <a href="mailto:aaa@bbb.com?subject=ccc&body=xxxyyy"> 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]/ 让英文字符串超出表格宽度自动换行 word-wrap: break-word; word-break: break-all; 透明背景 <IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe> 获得style内容 obj.style.cssText 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] 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 οncοntextmenu="return false" οndragstart="return false" onselectstart ="return false" οnselect="document.selection.empty()" οncοpy="document.selection.empty()" onbeforecopy="return false"οnmοuseup="document.selection.empty()> 禁止粘贴 <input type=text οnpaste="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 οnclick="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" οnfοcus="this.select()"> ENTER键可以让光标移到下一个输入框 <input οnkeydοwn="if(event.keyCode==13)event.keyCode=9"> 文本框的默认值 <input type=text value="123" οnfοcus="alert(this.defaultValue)"> title换行 obj.title = "123 sdfs " 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 checkbox扁平 <input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br> 获取选中内容 document.selection.createRange().duplicate().text 自动完成功能 <input type=text autocomplete=on>打开该功能 <input type=text autocomplete=off>关闭该功能窗口最大化 <body οnlοad="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://你好.com?as= hehe"))) encodeURIComponent对":"、"/"、";" 和 "?"也编码表格行指示 <tr οnmοuseοver="this.bgColor='#f0f0f0'" οnmοuseοut="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

//特殊用途

//不缓存

//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：οnkeyup="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： οnkeyup="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：οnkeyup="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：οnkeyup="value=value.replace(/[/W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))"

//消除图像工具栏

//无提示关闭

//取得控件得绝对位置(1)

//获得控件的绝对位置(2)

oRect = obj.getBoundingClientRect(); oRect.left oRect.

//最小化,最大化,关闭

//光标停在文字最后

//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

//网页是否被检索

//打印分页

//设置打印

//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 οnclick=document.all.WebBrowser.ExecWB(6,1)> <input type=button value=直接打印 οnclick=document.all.WebBrowser.ExecWB(6,6)> <input type=button value=页面设置 οnclick=document.all.WebBrowser.ExecWB(8,1)> </p> <p> <input type=button value=打印预览 οnclick=document.all.WebBrowser.ExecWB(7,1)> </center>

//去掉打印时的页眉页脚

//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' οnmοusedοwn=MouseDown(this) οnmοusemοve=MouseMove() οnmοuseup=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" οndrag="doDrag();" οnmοuseοver="this.style.cursor='hand'" style="position:absolute;left=100;top=100;" οnmοusedοwn="doMouseDown();"> <a href="#" οnclick="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

//刷新后不变的文本框

//访问剪贴板

//操作COOKIE

//setTimeout增加参数

//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

//检验连接是否有效

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

//检查网页是否存在

//连接数据库

//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" οnclick="xmldate.recordset.moveFirst()"> <input id="prev" TYPE=button value="<上一条记录" οnclick="xmldate.recordset.movePrevious()"> <input id="next" TYPE=button value="下一条记录>" οnclick="xmldate.recordset.moveNext()"> <input id="last" TYPE=button value="最后一条记录>>" οnclick="xmldate.recordset.moveLast()"> <input id="Add" TYPE=button value="添加新记录" οnclick="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">  </script> </body>

//可编辑SELECT

//设置光标位置

function getCaret(textbox) { var

//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>

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