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最新 javascript 技巧集(七)
日期:2007年1月1日 作者: 人气: 查看: [大字体 中字体 小字体]

  //页内查找

  
  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;
  }
  //书

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

  <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

  
  <script language="JavaScript">
  <!--
  //图片按比例缩放
  var flag=false;
  function DrawImage(ImgD){
   var image=new Image();
   var iwidth = 80;  //定义允许图片宽度
   var iheight = 80;  //定义允许图片高度
   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)">

   

  
  //细线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

  
  <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 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()"
  >
  原文:http://dynasty.cnblogs.com/archive/2005/09/02/228259.html

(出处:盛世唐朝)

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