javascript 應(yīng)用小技巧方法匯總

2019-11-20 12:06:20

字體：大中小

供稿：網(wǎng)友

javascript 在前端應(yīng)用體驗(yàn)小技巧繼續(xù)積累。

事件源對(duì)象 event.srcElement.tagName event.srcElement.type捕獲釋放 event.srcElement.setCapture(); event.srcElement.releaseCapture(); 事件按鍵 event.keyCode event.shiftKey event.altKey event.ctrlKey事件返回值 event.returnValue鼠標(biāo)位置 event.x event.y窗體活動(dòng)元素 document.activeElement綁定事件 document.captureEvents(Event.KEYDOWN);訪問(wèn)窗體元素 document.all("txt").focus(); document.all("txt").select();窗體命令 document.execCommand窗體COOKIE document.cookie菜單事件 document.oncontextmenu創(chuàng)建元素 document.createElement("SPAN"); 根據(jù)鼠標(biāo)獲得元素： document.elementFromPoint(event.x,event.y).tagName=="TD document.elementFromPoint(event.x,event.y).appendChild(ms) 窗體圖片 document.images[索引]窗體事件綁定 document.onmousedown=scrollwindow;元素 document.窗體.elements[索引]對(duì)象綁定事件 document.all.xxx.detachEvent('onclick',a);插件數(shù)目 navigator.plugins取變量類型 typeof($js_libpath) == "undefined"下拉框 下拉框.options[索引] 下拉框.options.length查找對(duì)象 document.getElementsByName("r1"); document.getElementById(id);定時(shí) timer=setInterval('scrollwindow()',delay); clearInterval(timer);UNCODE編碼 escape() ,unescape父對(duì)象 obj.parentElement(dhtml) obj.parentNode(dom)交換表的行 TableID.moveRow(2,1)替換CSS document.all.csss.href = "a.css";并排顯示 display:inline隱藏焦點(diǎn) hidefocus=true根據(jù)寬度換行 style="word-break:break-all"自動(dòng)刷新 <meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net">簡(jiǎn)單郵件 <a href="mailto:aaa@bbb.com?subject=ccc&body=xxxyyy"> 快速轉(zhuǎn)到位置 obj.scrollIntoView(true)錨 <a name="first"> <a href="#first">anchors</a>網(wǎng)頁(yè)傳遞參數(shù) location.search();可編輯 obj.contenteditable=true執(zhí)行菜單命令 obj.execCommand雙字節(jié)字符 /[^/x00-/xff]/ 漢字 /[/u4e00-/u9fa5]/讓英文字符串超出表格寬度自動(dòng)換行word-wrap: break-word; word-break: break-all;透明背景 <IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe>獲得style內(nèi)容 obj.style.cssTextHTML標(biāo)簽 document.documentElement.innerHTML第一個(gè)style標(biāo)簽 document.styleSheets[0]style標(biāo)簽里的第一個(gè)樣式 document.styleSheets[0].rules[0]防止點(diǎn)擊空鏈接時(shí)，頁(yè)面往往重置到頁(yè)首端。 <a href="javascript:function()">word</a>上一網(wǎng)頁(yè)源 asp: request.servervariables("HTTP_REFERER") javascript: document.referrer釋放內(nèi)存 CollectGarbage();禁止右鍵document.oncontextmenu = function() { return false;}禁止保存 <noscript><iframe src="*.htm"></iframe></noscript>禁止選取<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()>禁止粘貼 <input type=text onpaste="return false">地址欄圖標(biāo) <link rel="Shortcut Icon" href="favicon.ico"> favicon.ico 名字最好不變16*16的16色,放虛擬目錄根目錄下收藏欄圖標(biāo) <link rel="Bookmark" href="favicon.ico">查看源碼 <input type=button value=查看網(wǎng)頁(yè)源代碼 onclick="window.location = 'view-source:'+ 'http://www.csdn.net/'">關(guān)閉輸入法 <input style="ime-mode:disabled">自動(dòng)全選<input type=text name=text1 value="123" onfocus="this.select()">ENTER鍵可以讓光標(biāo)移到下一個(gè)輸入框 <input onkeydown="if(event.keyCode==13)event.keyCode=9">文本框的默認(rèn)值 <input type=text value="123" onfocus="alert(this.defaultValue)">title換行 obj.title = "123sdfs "獲得時(shí)間所代表的微秒 var n1 = new Date("2004-10-10".replace(/-/g, "http://")).getTime()窗口是否關(guān)閉 win.closedcheckbox扁平 <input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br>獲取選中內(nèi)容 document.selection.createRange().duplicate().text自動(dòng)完成功能 <input type=text autocomplete=on>打開(kāi)該功能 <input type=text autocomplete=off>關(guān)閉該功能  窗口最大化 <body onload="window.resizeTo(window.screen.width - 4,window.screen.height-50);window.moveTo(-4,-4)">無(wú)關(guān)閉按鈕IE window.open("aa.htm", "meizz", "fullscreen=7");統(tǒng)一編碼/解碼 alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe"))) encodeURIComponent對(duì)":"、"/"、";" 和 "?"也編碼表格行指示 <tr onmouseover="this.bgColor='#f0f0f0'" onmouseout="this.bgColor='#ffffff'">

//各種尺寸

s += "/r/n網(wǎng)頁(yè)可見(jiàn)區(qū)域?qū)挘?+ document.body.clientWidth;  s += "/r/n網(wǎng)頁(yè)可見(jiàn)區(qū)域高："+ document.body.clientHeight;  s += "/r/n網(wǎng)頁(yè)可見(jiàn)區(qū)域高："+ document.body.offsetWeight +" (包括邊線的寬)";  s += "/r/n網(wǎng)頁(yè)可見(jiàn)區(qū)域高："+ document.body.offsetHeight +" (包括邊線的寬)";  s += "/r/n網(wǎng)頁(yè)正文全文寬："+ document.body.scrollWidth;  s += "/r/n網(wǎng)頁(yè)正文全文高："+ document.body.scrollHeight;  s += "/r/n網(wǎng)頁(yè)被卷去的高："+ document.body.scrollTop;  s += "/r/n網(wǎng)頁(yè)被卷去的左："+ document.body.scrollLeft;  s += "/r/n網(wǎng)頁(yè)正文部分上："+ window.screenTop;  s += "/r/n網(wǎng)頁(yè)正文部分左："+ window.screenLeft;  s += "/r/n屏幕分辨率的高："+ window.screen.height;  s += "/r/n屏幕分辨率的寬："+ window.screen.width;  s += "/r/n屏幕可用工作區(qū)高度："+ window.screen.availHeight;  s += "/r/n屏幕可用工作區(qū)寬度："+ window.screen.availWidth;

//過(guò)濾數(shù)字

復(fù)制代碼代碼如下:

<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

復(fù)制代碼代碼如下:

<input type=button value=導(dǎo)入收藏夾 onclick="window.external.ImportExportFavorites(true,'http://localhost');"> <input type=button value=導(dǎo)出收藏夾 onclick="window.external.ImportExportFavorites(false,'http://localhost');"> <input type=button value=整理收藏夾 onclick="window.external.ShowBrowserUI('OrganizeFavorites', null)"> 
<input type=button value=語(yǔ)言設(shè)置   onclick="window.external.ShowBrowserUI('LanguageDialog', null)"> 
<input type=button value=加入收藏夾 onclick="window.external.AddFavorite('http://www.google.com/', 'google')"> <input type=button value=加入到頻道 onclick="window.external.addChannel('http://www.google.com/')"> <input type=button value=加入到頻道 onclick="window.external.showBrowserUI('PrivacySettings',null)">

//不緩存

復(fù)制代碼代碼如下:

<META HTTP-EQUIV="pragma" CONTENT="no-cache"> <META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate"> 
<META HTTP-EQUIV="expires" CONTENT="0">

//正則匹配

復(fù)制代碼代碼如下:

匹配中文字符的正則表達(dá)式： [/u4e00-/u9fa5]
匹配雙字節(jié)字符(包括漢字在內(nèi))：[^/x00-/xff] 匹配空行的正則表達(dá)式：/n[/s| ]*/r
匹配HTML標(biāo)記的正則表達(dá)式：/<(.*)>.*<///1>|<(.*) //>/
匹配首尾空格的正則表達(dá)式：(^/s*)|(/s*$)（像vbscript那樣的trim函數(shù)）
匹配Email地址的正則表達(dá)式：/w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*
匹配網(wǎng)址URL的正則表達(dá)式：http://([/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)? 以下是例子：利用正則表達(dá)式限制網(wǎng)頁(yè)表單里的文本框輸入內(nèi)容：用正則表達(dá)式限制只能輸入中文：onkeyup="value=value.replace(/[^/u4E00-/u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/u4E00-/u9FA5]/g,''))"
1.用正則表達(dá)式限制只能輸入全角字符： onkeyup="value=value.replace(/[^/uFF00-/uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/uFF00-/uFFFF]/g,''))"
2.用正則表達(dá)式限制只能輸入數(shù)字：onkeyup="value=value.replace(/[^/d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))"
3.用正則表達(dá)式限制只能輸入數(shù)字和英文：onkeyup="value=value.replace(/[/W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))"

//消除圖像工具欄

復(fù)制代碼代碼如下:

<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="false">  or <head> 
<meta http-equiv="imagetoolbar" content="no"> </head>

//無(wú)提示關(guān)閉

復(fù)制代碼代碼如下:

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()    } }

//取得控件得絕對(duì)位置(1)

復(fù)制代碼代碼如下:

<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>

//獲得控件的絕對(duì)位置(2)

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

//最小化,最大化,關(guān)閉

<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=關(guān)閉 onclick=close.Click()>

//光標(biāo)停在文字最后

復(fù)制代碼代碼如下:

<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()">

//頁(yè)面進(jìn)入和退出的特效

進(jìn)入頁(yè)面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">
推出頁(yè)面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">
這個(gè)是頁(yè)面被載入和調(diào)出時(shí)的一些特效。duration表示特效的持續(xù)時(shí)間，以秒為單位。transition表示使用哪種特效，取值為1-23:
　　0 矩形縮小　　1 矩形擴(kuò)大　　2 圓形縮小　　3 圓形擴(kuò)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 豎百葉窗　　9 橫百葉窗
　　10 錯(cuò)位橫百葉窗　　11 錯(cuò)位豎百葉窗　　12 點(diǎn)擴(kuò)散　　13 左右到中間刷新
　　14 中間到左右刷新　　15 中間到上下　　16 上下到中間　　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 橫條　　22 豎條　　23

//網(wǎng)頁(yè)是否被檢索

//打印分頁(yè)

//設(shè)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=頁(yè)面設(shè)置 onclick="factory.printing.PageSetup()"> <input type=button value=打印預(yù)覽 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 = "居左顯示&b居中顯示&b居右顯示頁(yè)碼，第&p頁(yè)/共&P頁(yè)"   factory.printing.footer = "（自定義頁(yè)腳）"   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="打印本頁(yè)" onclick="factory.printing.Print(false)"> <input type=button value="頁(yè)面設(shè)置" onclick="factory.printing.PageSetup()"> <input type=button value="打印預(yù)覽" onclick="factory.printing.Preview()"><br> <a  target=_blank>具體使用手冊(cè)，更多信息，點(diǎn)這里</a>

//自帶的打印預(yù)覽

WebBrowser.ExecWB(1,1) 打開(kāi) Web.ExecWB(2,1) 關(guān)閉現(xiàn)在所有的IE窗口，并打開(kāi)一個(gè)新窗口 Web.ExecWB(4,1) 保存網(wǎng)頁(yè) Web.ExecWB(6,1) 打印 Web.ExecWB(7,1) 打印預(yù)覽 Web.ExecWB(8,1) 打印頁(yè)面設(shè)置 Web.ExecWB(10,1) 查看頁(yè)面屬性 Web.ExecWB(15,1) 好像是撤銷，有待確認(rèn) Web.ExecWB(17,1) 全選 Web.ExecWB(22,1) 刷新 Web.ExecWB(45,1) 關(guān)閉窗體無(wú)提示 <style media=print> .Noprint{display:none;}<!--用本樣式在打印時(shí)隱藏非打印項(xiàng)目--> .PageNext{page-break-after: always;}<!--控制分頁(yè)--> </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=頁(yè)面設(shè)置 onclick=document.all.WebBrowser.ExecWB(8,1)> </p> <p> <input type=button value=打印預(yù)覽 onclick=document.all.WebBrowser.ExecWB(7,1)> </center>

//去掉打印時(shí)的頁(yè)眉頁(yè)腳

<script language="JavaScript">  var HKEY_Root,HKEY_Path,HKEY_Key; HKEY_Root="HKEY_CURRENT_USER"; HKEY_Path="http://Software//Microsoft//Internet Explorer//PageSetup//"; //設(shè)置網(wǎng)頁(yè)打印的頁(yè)眉頁(yè)腳為空 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){} } //設(shè)置網(wǎng)頁(yè)打印的頁(yè)眉頁(yè)腳為默認(rèn)值 function PageSetup_Default() {  try {  var Wsh=new ActiveXObject("WScript.Shell");  HKEY_Key="header";  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&w&b頁(yè)碼,&p/&P");  HKEY_Key="footer";  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&u&b&d"); } catch(e){} } </script> <input type="button" value="清空頁(yè)碼" onclick=PageSetup_Null()> <input type="button" value="恢復(fù)頁(yè)碼" onclick=PageSetup_Default()>

//瀏覽器驗(yàn)證

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; }

//計(jì)算內(nèi)容寬和高

<SCRIPT language="javascript">  function test(obj)  {     var range = obj.createTextRange();      alert("內(nèi)容區(qū)寬度: " + range.boundingWidth                            + "px/r/n內(nèi)容區(qū)高度: " + range.boundingHeight + "px");         }  </SCRIPT>  <BODY>  <Textarea id="txt" height="150">sdf</textarea><INPUT type="button" value="計(jì)算內(nèi)容寬度" onClick="test(txt)">  </BODY>

//無(wú)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;"); }

//屏蔽按鍵

<html> <head>  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">  <noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript>  <title>屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格鍵</title> </head> <body> <script language="Javascript"><!--  //屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、F11、F5刷新、退格鍵  //Author: meizz(梅花雨) 2002-6-18 function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠標(biāo)右鍵 function window.onhelp(){return false} //屏蔽F1幫助 function document.onkeydown() {  if ((window.event.altKey)&&    ((window.event.keyCode==37)||  //屏蔽 Alt+ 方向鍵 ←    (window.event.keyCode==39)))  //屏蔽 Alt+ 方向鍵 →  {   alert("不準(zhǔn)你使用ALT+方向鍵前進(jìn)或后退網(wǎng)頁(yè)！");    event.returnValue=false;  }    /* 注：這還不是真正地屏蔽 Alt+ 方向鍵，    因?yàn)?Alt+ 方向鍵彈出警告框時(shí)，按住 Alt 鍵不放，   用鼠標(biāo)點(diǎn)掉警告框，這種屏蔽方法就失效了。以后若    有哪位高手有真正屏蔽 Alt 鍵的方法，請(qǐng)告知。*/  if ((event.keyCode==8) ||         //屏蔽退格刪除鍵    (event.keyCode==116)||         //屏蔽 F5 刷新鍵    (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 加鼠標(biāo)左鍵新開(kāi)一網(wǎng)頁(yè)  if ((window.event.altKey)&&(window.event.keyCode==115))       //屏蔽Alt+F4  {    window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");    return false;  } } </script> 屏蔽鼠標(biāo)右鍵、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格鍵 </body>

</html>
//屏蔽打印 <style> @media print{ * {display:none} } </style>

//移動(dòng)的圖層，拖動(dòng)

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>

//文檔狀態(tài)改變

<iframe src="a.html" id="f" name="f" scrolling="no" frameborder=0 marginwidth=0 marginheight=0></iframe> <script> var doc=window.frames["f"].document; function s(){ if (doc.readyState=="complete"){  document.all.f.style.height=doc.body.scrollHeight  document.all.f.style.width=doc.body.scrollWidth } } doc.onreadystatechange=s </script>

//刷新后不變的文本框

<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>

//訪問(wèn)剪貼板

(1)拖拽訪問(wèn)

event.dataTransfer.setData("URL", oImage.src); sImageURL = event.dataTransfer.getData("URL") (2)普通訪問(wèn) window.clipboardData.setData("Text",oSource.innerText); window.clipboardData.getData("Text");

//操作COOKIE

function SetCookie(sName, sValue) { document.cookie = sName + "=" + escape(sValue) + "; "; } function GetCookie(sName) { var aCookie = document.cookie.split("; "); for (var i=0; i < aCookie.length; i++) {   var aCrumb = aCookie[i].split("=");  if (sName == aCrumb[0])  return unescape(aCrumb[1]); }  } function DelCookie(sName) { document.cookie = sName + "=" + escape(sValue) + "; expires=Fri, 31 Dec 1999 23:59:59 GMT;"; }

//setTimeout增加參數(shù)

復(fù)制代碼代碼如下:

<script> 
var _st = window.setTimeout; 
window.setTimeout = function(fRef, mDelay) { if(typeof fRef == 'function'){   var argu = Array.prototype.slice.call(arguments,2); 
  var f = (function(){ fRef.apply(null, argu); });   return _st(f, mDelay); } return _st(fRef,mDelay); } function test(x){ alert(x); } 
window.setTimeout(test,1000,'fason'); </script>

//自定義的apply,call

復(fù)制代碼代碼如下:

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); }; 

//下載文件

復(fù)制代碼代碼如下:

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("下載URL出錯(cuò)!"); } //window.confirm("下載完成."); }

//檢驗(yàn)連接是否有效

復(fù)制代碼代碼如下:

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

復(fù)制代碼代碼如下:

<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?cái)?shù)據(jù)的進(jìn)度，0=載入中,1=未初始化,2=已載入,3=運(yùn)行中,4=完成

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

//檢查網(wǎng)頁(yè)是否存在

復(fù)制代碼代碼如下:

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; 
}

//連接數(shù)據(jù)庫(kù)

復(fù)制代碼代碼如下:

<script language="javascript">   //用 JavaScript 寫(xiě)服務(wù)器端連接數(shù)據(jù)庫(kù)的代碼示例   var conn = new ActiveXObject("ADODB.Connection");   conn.Open("Provider=SQLOLEDB.1; Data Source=localhost; User ID=sa; " 
    +"Password=; Initial Catalog=pubs"); 
  var rs = new ActiveXObject("ADODB.Recordset");   var sql="select * from authors";   rs.open(sql, conn); 
shtml = "<table width='100%' border=1>"; 
shtml +="<tr bgcolor='#f4f4f4'><td>au_id</td><td>au_lname</td><td>au_fname</td><td>phone</td><td>address</td><td> city</td><td>state</td><td>zip</td></tr>"; 
  while(!rs.EOF)   { 
shtml += "<tr><td>" + rs("au_id") + "</td><td>" + rs("au_lname") + "</td><td>" + rs("au_fname") + "</td><td>" + rs("phone") + "</td><td>" + rs("address") + "</td><td>" + rs("city") + "</td><td>" + rs("state") + "</td><td>" + rs("zip") + "</td></tr>"; rs.moveNext; 
  }   shtml += "</table>"; 
  document.write(shtml);   rs.close();    rs = null;    conn.close();    conn = null; </script>

//使用數(shù)據(jù)島

復(fù)制代碼代碼如下:

<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="<<　第一條記錄" onclick="xmldate.recordset.moveFirst()"> 
<input id="prev" TYPE=button value="<上一條記錄" onclick="xmldate.recordset.movePrevious()">   
<input id="next" TYPE=button value="下一條記錄>" onclick="xmldate.recordset.moveNext()">   
<input id="last" TYPE=button value="最后一條記錄>>" onclick="xmldate.recordset.moveLast()">    
<input id="Add" TYPE=button value="添加新記錄" 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點(diǎn)22分0秒</times></info> 
</infolist> </XML> </body> </html>

//獲得參數(shù)

復(fù)制代碼代碼如下:

<body> 
<a href="javascript:location.href=location.href + '?a=1&b=2'">search</a> 
<script language="JavaScript"> 
<!-- var a = location.search.substr(1); if(a.length>0) { var re = /([^&]*?)/=([^&]*)/g var s = a.match(re); for(var i= 0;i<s.length;i++) { 
  alert(s[i]);   alert(s[i].split("=")[1]); } } //--> </script> </body>

//可編輯SELECT

復(fù)制代碼代碼如下:

<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>

//設(shè)置光標(biāo)位置

復(fù)制代碼代碼如下:

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; }

//頁(yè)內(nèi)查找

復(fù)制代碼代碼如下:

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請(qǐng)?jiān)囍斎腠?yè)面中的關(guān)鍵字再次查找！"); 
  } } return false; }

//操作EXECL

復(fù)制代碼代碼如下:

<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>

//自定義提示條

<a href="#" title="這是提示">tip</a> <script Language="JavaScript"> //***********默認(rèn)設(shè)置定義.********************* tPopWait=50;//停留tWait豪秒后顯示提示。 tPopShow=5000;//顯示tShow豪秒后關(guān)閉提示 showPopStep=20; popOpacity=99; //***************內(nèi)部變量定義***************** 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

復(fù)制代碼代碼如下:

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')

//判斷鍵值

復(fù)制代碼代碼如下:

<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='現(xiàn)在是ns瀏覽器';   var realkey=String.fromCharCode(e.which); } if(ie) {   var iekey=event.keyCode;   var nkey='現(xiàn)在是ie瀏覽器';   var realkey=String.fromCharCode(event.keyCode);   if(event.keyCode==32){realkey='/' 空格/''} 
  if(event.keyCode==13){realkey='/' 回車/''} 
  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瀏覽器中鍵值:'+nkey+'/n'+'ie瀏覽器中鍵值:'+iekey+'/n'+'實(shí)際鍵為'+realkey); } 
document.onkeydown = keyDown; </script> </head> 
<body> //Javascript Document. <hr> <center> <h3>請(qǐng)按任意一個(gè)鍵。。。。</h3> 
</center> </body> </html>

//禁止FSO

1.注銷組件
regsvr32 /u scrrun.dll 2.修改PROGID
HKEY_CLASSES_ROOT/Scripting.FileSystemObject Scripting.FileSystemObject
3.對(duì)于使用object的用戶，修改HKEY_CLASSES_ROOT/Scripting.
//省略號(hào)

<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，很長(zhǎng)，表格內(nèi)一行顯示不下.</NOBR> </DIV>

//檢測(cè)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>

//圖象按比例

<script language="JavaScript"> <!-- //圖片按比例縮放 var flag=false; function DrawImage(ImgD){ var image=new Image(); var iwidth = 80; //定義允許圖片寬度 var iheight = 80; //定義允許圖片高度 image.src=ImgD.src; if(image.width>0 && image.height>0){ flag=true; if(image.width/image.height>= iwidth/iheight){  if(image.width>iwidth){   ImgD.width=iwidth;  ImgD.height=(image.height*iwidth)/image.width;  }else{  ImgD.width=image.width;   ImgD.height=image.height;  }  ImgD.alt=image.width+"×"+image.height;  } else{  if(image.height>iheight){   ImgD.height=iheight;  ImgD.width=(image.width*iheight)/image.height;   }else{  ImgD.width=image.width;   ImgD.height=image.height;  }  ImgD.alt=image.width+"×"+image.height;  } } } //--> </script> <img src=".." onload = "DrawImage(this)">

//細(xì)線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枚舉

function getComputerName() { var objWMIService = GetObject("Winmgmts:root/cimv2"); for(e = new Enumerator(objWMIService) ; !e.atEnd() ; e.moveNext()) {   var getComputer = e.item();   return getComputer.Name; } }

//條件編譯

<script language=javascript> /*@cc_on @*/ /*@if (@_win32 && @_jscript_version>5) function window.confirm(str) {   execScript("n = msgbox('"+ str +"', 257)", "vbscript");   return(n == 1); } @end @*/ </script>

//取得innerText

<SCRIPT LANGUAGE="JavaScript"> <!-- var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.4.0"); var currNode; xmlDoc.async = false; xmlDoc.async = false; xmlDoc.loadXML("<TABLENAME>   你好你阿三  大法   司法等四       </TABLENAME>"); currNode = xmlDoc.documentElement;    var s = currNode.xml;  var r = //<([^/>/s]*?)[^/>]*?/>([^/<]*?)/<///1/>/  var b = s.replace(r,"$2");  alert(b); //--> </SCRIPT>

//mergeAttributes 復(fù)制所有讀/寫(xiě)標(biāo)簽屬性到指定元素。

<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()" >

以上所述就是本文的全部?jī)?nèi)容了，希望大家能夠喜歡。

上一篇：淺談angularJS 作用域

下一篇：javascript常用功能匯總