javascript 小技巧

//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.cidu.net/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.cidu.net/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;}<!--用本样式在打印时隐藏非打印项目-->  
.PageNext{page-break-after: always;}<!--控制分页-->  
</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
(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 
 
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;";
}