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最新 javascript 技巧集(六)
日期:2007年1月1日 作者: 人气: 查看: [大字体 中字体 小字体]
  //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

   

  //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

  
  <script language="javascript">
    //用 JavaScript 写服务器端连接数据库的代码示例
    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 id="first" TYPE=button value="<< 第一条记录" onclick="xmldate.recordset.moveFirst()">
  <input id="prev" TYPE=button value="<上一条记录" onclick="xmldate.recordset.movePrevious()">  
  <input id="next" TYPE=button value="下一条记录>" onclick="xmldate.recordset.moveNext()">  
  <input id="last" TYPE=button value="最后一条记录>>" onclick="xmldate.recordset.moveLast()">   
  <input id="Add" TYPE=button value="添加新记录" 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点22分0秒</times></info>
  </infolist>
  </XML>
  </body>
  </html>
  //获得参数

  <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>
  //可编辑SELECT

  <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>

   

  //设置光标位置

  
  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;
  }

(出处:盛世唐朝)

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