你想的到想不到的 javascript 应用小技巧方法

2023-01-05 10:03:11

javascript 在前端应用体验小技巧继续积累。

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.onmousedown=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 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)">
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
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
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://你好.com?as= hehe"))) 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

//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：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

//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 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

//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

//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 = 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

//连接数据库

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">
 </script> </body>

//可编辑SELECT

//设置光标位置

//页内查找

//书

http://www.itpub.net/attachment.php?s=&postid=1894598
http://www.wrclub.net/down/listdown.aspx?id=1341

//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.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

//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" 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()" >

分类: JavaScript特效

码农公寓

相关文章