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javaScript高级编程二

2009-03-24 17:42 260 查看

//各种尺寸

s += "\r\n网页可见区域宽："+ document.body.clientWidth;

s += "\r\n网页可见区域高："+ document.body.clientHeight;

s += "\r\n网页可见区域高："+ document.body.offsetWeight +" (包括边线的宽)";

s += "\r\n网页可见区域高："+ document.body.offsetHeight +" (包括边线的宽)";

s += "\r\n网页正文全文宽："+ document.body.scrollWidth;

s += "\r\n网页正文全文高："+ document.body.scrollHeight;

s += "\r\n网页被卷去的高："+ document.body.scrollTop;

s += "\r\n网页被卷去的左："+ document.body.scrollLeft;

s += "\r\n网页正文部分上："+ window.screenTop;

s += "\r\n网页正文部分左："+ window.screenLeft;

s += "\r\n屏幕分辨率的高："+ window.screen.height;

s += "\r\n屏幕分辨率的宽："+ window.screen.width;

s += "\r\n屏幕可用工作区高度："+ window.screen.availHeight;

s += "\r\n屏幕可用工作区宽度："+ window.screen.availWidth;

//过滤数字

<input type=text onkeypress="return event.keyCode>=48&&event.keyCode<=57||(this.value.indexOf('.')<0?event.keyCode==46:false)" onpaste="return !clipboardData.getData('text').match(/\D/)" ondragenter="return false">

//特殊用途

<input type=button value=导入收藏夹 onclick="window.external.ImportExportFavorites(true,'http://localhost');">

<input type=button value=导出收藏夹 onclick="window.external.ImportExportFavorites(false,'http://localhost');">

<input type=button value=整理收藏夹 onclick="window.external.ShowBrowserUI('OrganizeFavorites', null)">

<input type=button value=语言设置 onclick="window.external.ShowBrowserUI('LanguageDialog', null)">

<input type=button value=加入收藏夹 onclick="window.external.AddFavorite('http://www.google.com/', 'google')">

<input type=button value=加入到频道 onclick="window.external.addChannel('http://www.google.com/')">

<input type=button value=加入到频道 onclick="window.external.showBrowserUI('PrivacySettings',null)">

//不缓存

<META HTTP-EQUIV="pragma" CONTENT="no-cache">

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

<META HTTP-EQUIV="expires" CONTENT="0">

//正则匹配

匹配中文字符的正则表达式： [\u4e00-\u9fa5]

匹配双字节字符(包括汉字在内)：[^\x00-\xff]

匹配空行的正则表达式：\n[\s| ]*\r

匹配HTML标记的正则表达式：/<(.*)>.*<\/\1>|<(.*) \/>/

匹配首尾空格的正则表达式：(^\s*)|(\s*$)（像vbscript那样的trim函数）

匹配Email地址的正则表达式：\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

匹配网址URL的正则表达式：http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?

以下是例子：

利用正则表达式限制网页表单里的文本框输入内容：

用正则表达式限制只能输入中文：onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\u4E00-\u9FA5]/g,''))"

1.用正则表达式限制只能输入全角字符： onkeyup="value=value.replace(/[^\uFF00-\uFFFF]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\uFF00-\uFFFF]/g,''))"

2.用正则表达式限制只能输入数字：onkeyup="value=value.replace(/[^\d]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"

3.用正则表达式限制只能输入数字和英文：onkeyup="value=value.replace(/[\W]/g,'') "onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"

//消除图像工具栏

<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="false">

or

<head>

<meta http-equiv="imagetoolbar" content="no">

</head>

//无提示关闭

function Close()

{

var ua=navigator.userAgent

var ie=navigator.appName=="Microsoft Internet Explorer"?true:false

if(ie)

{

var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))))

if(IEversion< 5.5)

{

var str = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">'

str += '<param name="Command" value="Close"></object>';

document.body.insertAdjacentHTML("beforeEnd", str);

document.all.noTipClose.Click();

}

else

{

window.opener =null;

window.close();

}

}

else

{

window.close()

}

}

//取得控件得绝对位置(1)

<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>

//获得控件的绝对位置(2)

oRect = obj.getBoundingClientRect();

oRect.left

oRect.

//最小化,最大化,关闭

<object id=min classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">

<param name="Command" value="Minimize"></object>

<object id=max classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">

<param name="Command" value="Maximize"></object>

<OBJECT id=close classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">

<PARAM NAME="Command" value="Close"></OBJECT>

<input type=button value=最小化 onclick=min.Click()>

<input type=button value=最大化 onclick=max.Click()>

<input type=button value=关闭 onclick=close.Click()>

//光标停在文字最后

<script language="javascript">

function cc()

{

var e = event.srcElement;

var r =e.createTextRange();

r.moveStart('character',e.value.length);

r.collapse(true);

r.select();

}

</script>

<input type=text name=text1 value="123" onfocus="cc()">

//页面进入和退出的特效

进入页面<meta http-equiv="Page-Enter" content="revealTrans(duration=x, transition=y)">

推出页面<meta http-equiv="Page-Exit" content="revealTrans(duration=x, transition=y)">

这个是页面被载入和调出时的一些特效。duration表示特效的持续时间，以秒为单位。transition表示使

用哪种特效，取值为1-23:

　　0 矩形缩小

　　1 矩形扩大

　　2 圆形缩小

　　3 圆形扩大

　　4 下到上刷新

　　5 上到下刷新

　　6 左到右刷新

　　7 右到左刷新

　　8 竖百叶窗

　　9 横百叶窗

　　10 错位横百叶窗

　　11 错位竖百叶窗

　　12 点扩散

　　13 左右到中间刷新

　　14 中间到左右刷新

　　15 中间到上下

　　16 上下到中间

　　17 右下到左上

　　18 右上到左下

　　19 左上到右下

　　20 左下到右上

　　21 横条

　　22 竖条

　　23

//网页是否被检索 <meta name="ROBOTS" content="属性值">

　　其中属性值有以下一些:

　　属性值为"all": 文件将被检索，且页上链接可被查询；

　　属性值为"none": 文件不被检索，而且不查询页上的链接；

　　属性值为"index": 文件将被检索；

　　属性值为"follow": 查询页上的链接；

　　属性值为"noindex": 文件不检索，但可被查询链接；

　　属性值为"nofollow":

//打印分页 <p style="page-break-after:always">page1</p>

<p style="page-break-after:always">page2</p>

//设置打印

<object id="factory" style="display:none" viewastext

classid="clsid:1663ed61-23eb-11d2-b92f-008048fdd814"

codebase="http://www.meadroid.com/scriptx/ScriptX.cab#Version=5,60,0,360"

></object>

<input type=button value=页面设置 onclick="factory.printing.PageSetup()">

<input type=button value=打印预览 onclick="factory.printing.Preview()">

<script language=javascript>

function window.onload()

{

// -- advanced features

factory.printing.SetMarginMeasure(2) // measure margins in inches

factory.printing.SetPageRange(false, 1, 3) // need pages from 1 to 3

factory.printing.printer = "HP DeskJet 870C"

factory.printing.copies = 2

factory.printing.collate = true

factory.printing.paperSize = "A4"

factory.printing.paperSource = "Manual feed"

// -- basic features

factory.printing.header = "居左显示&b居中显示&b居右显示页码，第&p页/共&P页"

factory.printing.footer = "（自定义页脚）"

factory.printing.portrait = false

factory.printing.leftMargin = 0.75

factory.printing.topMargin = 1.5

factory.printing.rightMargin = 0.75

factory.printing.bottomMargin = 1.5

}

function Print(frame) {

factory.printing.Print(true, frame) // print with prompt

}

</script>

<input type=button value="打印本页" onclick="factory.printing.Print(false)">

<input type=button value="页面设置" onclick="factory.printing.PageSetup()">

<input type=button value="打印预览" onclick="factory.printing.Preview()"><br>

<a href="http://www.meadroid.com/scriptx/docs/printdoc.htm?static" target=_blank>具体使用手册，更多信息，点这里</a>

//自带的打印预览

WebBrowser.ExecWB(1,1) 打开

Web.ExecWB(2,1) 关闭现在所有的IE窗口，并打开一个新窗口

Web.ExecWB(4,1) 保存网页

Web.ExecWB(6,1) 打印

Web.ExecWB(7,1) 打印预览

Web.ExecWB(8,1) 打印页面设置

Web.ExecWB(10,1) 查看页面属性

Web.ExecWB(15,1) 好像是撤销，有待确认

Web.ExecWB(17,1) 全选

Web.ExecWB(22,1) 刷新

Web.ExecWB(45,1) 关闭窗体无提示

<style media=print>

.Noprint{display:none;}

.PageNext{page-break-after: always;}

</style>

<object id="WebBrowser" width=0 height=0 classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2">

</object>

<center class="Noprint" >

<input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)>

<input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)>

<input type=button value=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)>

</p>

<p> <input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)>

</center>

//去掉打印时的页眉页脚

<script language="JavaScript">

var HKEY_Root,HKEY_Path,HKEY_Key;

HKEY_Root="HKEY_CURRENT_USER";

HKEY_Path="\\Software\\Microsoft\\Internet Explorer\\PageSetup\\";

//设置网页打印的页眉页脚为空

function PageSetup_Null()

{

try

{

var Wsh=new ActiveXObject("WScript.Shell");

HKEY_Key="header";

Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");

HKEY_Key="footer";

Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");

}

catch(e){}

}

//设置网页打印的页眉页脚为默认值

function PageSetup_Default()

{

try

{

var Wsh=new ActiveXObject("WScript.Shell");

HKEY_Key="header";

Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&w&b页码,&p/&P");

HKEY_Key="footer";

Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"&u&b&d");

}

catch(e){}

}

</script>

<input type="button" value="清空页码" onclick=PageSetup_Null()>

<input type="button" value="恢复页码" onclick=PageSetup_Default()>

//浏览器验证

function checkBrowser()

{

this.ver=navigator.appVersion

this.dom=document.getElementById?1:0

this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom)?1:0;

this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;

this.ie4=(document.all && !this.dom)?1:0;

this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;

this.ns4=(document.layers && !this.dom)?1:0;

this.mac=(this.ver.indexOf('Mac') > -1) ?1:0;

this.ope=(navigator.userAgent.indexOf('Opera')>-1);

this.ie=(this.ie6 || this.ie5 || this.ie4)

this.ns=(this.ns4 || this.ns5)

this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns5 || this.ns4 || this.mac || this.ope)

this.nbw=(!this.bw)

return this;

}

//计算内容宽和高

<SCRIPT language="javascript">

function test(obj)

{

var range = obj.createTextRange();

alert("内容区宽度: " + range.boundingWidth + "px\r\n内容区高度: " + range.boundingHeight + "px");

}

</SCRIPT>

<BODY>

<Textarea id="txt" height="150">sdf</textarea><INPUT type="button" value="计算内容宽度" onClick="test(txt)">

</BODY>

//无模式的提示框 function modelessAlert(Msg)

{

window.showModelessDialog("javascript:alert(\""+escape(Msg)+"\");window.close();","","status:no;resizable:no;help:no;dialogHeight:height:30px;dialogHeight:40px;");

}

//屏蔽按键

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

<noscript><meta http-equiv="refresh" content="0;url=about:noscript"></noscript>

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

</head>

<body>

<script language="Javascript"><!--

//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

<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

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

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.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增加参数

<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 = "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;

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 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

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