JS实用

js转载
2008-07-17 10:33
//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

 

//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;
}


//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
<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>
Posted on 2008-07-23 16:46  hesen  阅读(148)  评论(0)  编辑  收藏  举报