搜集的一些javascript小技巧！

搜集的一些javascript小技巧！
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
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)">

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

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//特殊用途

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//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

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//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 class, str);        document.all.noTipClose.Click();   }       else   {        window.opener =null;        window.close();       }    }  else  {   window.close()    } }

//取得控件得绝对位置(1)

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//获得控件的绝对位置(2)

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

//最小化,最大化,关闭

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//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 ); } 
<br>//屏蔽按键 <br><span><textarea rows="12" cols="95"><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 + Revent.keyCode=0;event.returnValue=false;}if (event.keyCode==122){event.keyCode=0;event.returnValue=false;}  //屏蔽F11if (event.ctrlKey && event.keyCode==78) event.returnValue=false;   //屏蔽 Ctrl+nif (event.shiftKey && event.keyCode==121)event.returnValue=false;  //屏蔽 shift+F10if (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>

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//移动的图层，拖动

1.

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<div );
<br>(2)普通访问<br><pre class="CodeSamp"> window.clipboardData.setData("Text",oSource.innerText); window.clipboardData.getData("Text"); </pre>
<br><br>//操作COOKIE <br><br><pre class="CodeSamp">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;"; } </pre>
<br>//setTimeout增加参数 <br><span><textarea rows="12" cols="95"><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>

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//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 ThenstrReturn = strReturn & ThisChrElseinnerCode = Asc(ThisChr)If innerCode < 0 TheninnerCode = innerCode + &H10000End IfHight8 = (innerCode  And &HFF00)\ &HFFLow8 = innerCode And &HFFstrReturn = strReturn & "%" & Hex(Hight8) &  "%" & Hex(Low8)End IfNextURLEncoding = strReturnEnd FunctionFunction bytes2BSTR(vIn)strReturn = ""For i = 1 To LenB(vIn)ThisCharCode = AscB(MidB(vIn,i,1))If ThisCharCode < &H80 ThenstrReturn = strReturn & Chr(ThisCharCode)ElseNextCharCode = AscB(MidB(vIn,i+1,1))strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode))i = i + 1End IfNextbytes2BSTR = 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>

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//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

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//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 ,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; } 
<br>//页内查找 <br><br><pre class="CodeSamp">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; } </pre>
<br>//书 <br><br><a href="http://www.itpub.net/attachment.php?s=&postid=1894598" target="_blank" rel="nofollow">http://www.itpub.net/attachment.php?s=&postid=1894598</a> <br><a href="http://www.wrclub.net/down/listdown.aspx?id=1341" target="_blank" rel="nofollow">http://www.wrclub.net/down/listdown.aspx?id=1341</a><br>//操作EXECL <br><span><textarea rows="12" cols="95"><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>

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//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>

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//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

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//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

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//检测media play版本

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//图象按比例

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//细线SELECT

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//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

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//取得innerText

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检查链接是否有效

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判断是否输入值再激活按钮

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屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键

<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 + Revent.keyCode=0;event.returnValue=false;}if (event.keyCode==122){event.keyCode=0;event.returnValue=false;}  //屏蔽F11if (event.ctrlKey && event.keyCode==78) event.returnValue=false;   //屏蔽 Ctrl+nif (event.shiftKey && event.keyCode==121)event.returnValue=false;  //屏蔽 shift+F10if (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>

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自定义热键（请按a）

[Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]

[Ctrl+A 全部选择提示：你可先修改部分代码，再按运行]