非常漂亮的loading效果网页代码

ajax · 发表于 2008-10-25 23:32:20

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

<BODY STYLE="FONT-SIZE: 10pt; FONT-FAMILY: Verdana, Arial, Helvetica">

<SCRIPT LANGUAGE="JScript">

var NUMBER_OF_REPETITIONS = 40;
var nRepetitions = 0;
var g_oTimer = null;

function startLongProcess()
{
divProgressDialog.style.display = "";
resizeModal();
btnCancel.focus();

// Add a resize handler for the window
window.onresize = resizeModal;

// Add a warning in case anyone tries to navigate away or refresh the page
window.onbeforeunload = showWarning;

//
// Here's where you would normally kick off a long asynchronous process
// like a file download or a remote database operation. Here, we use
// our "long process" to simulate this process.
//

continueLongProcess();
}

function updateProgress(nNewPercent)
{
// Update our pseudo progress bar
divProgressInner.style.width = (parseInt(divProgressOuter.style.width)
   * nNewPercent / 100)+ "px";
}

function stopLongProcess()
{
if (g_oTimer != null)
{
   // Clear the timer so we don't get called back an extra time
   window.clearTimeout(g_oTimer);
   g_oTimer = null;
}

// Hide the fake modal DIV
divModal.style.width = "0px";
divModal.style.height = "0px";
divProgressDialog.style.display = "none";

// Remove our event handlers
window.onresize = null;
window.onbeforeunload = null;

nRepetitions = 0;
}

function continueLongProcess()
{
if (nRepetitions < NUMBER_OF_REPETITIONS)
{
   // Set the timeout somewhere between 0 and .25 seconds
   var nTimeoutLength = Math.random() * 250;
   updateProgress(100 * nRepetitions / NUMBER_OF_REPETITIONS);

   g_oTimer = window.setTimeout("continueLongProcess();", nTimeoutLength);
   nRepetitions++;
}
else
{
   stopLongProcess();
}
}

function showWarning()
{
//Warn users before they refresh the page or navigate away
return "Navigating to a different page or refreshing the window could cause you to lose precious data.nnAre you*absolutely* certain you want to do this?";
}

function resizeModal()
{
// Resize the DIV which fakes the modality of the dialog DIV
divModal.style.width = document.body.scrollWidth;
divModal.style.height = document.body.scrollHeight;

// Re-center the dialog DIV
divProgressDialog.style.left = ((document.body.offsetWidth -
divProgressDialog.offsetWidth) / 2);
divProgressDialog.style.top = ((document.body.offsetHeight -
divProgressDialog.offsetHeight) / 2);
}

</SCRIPT>

<INPUT TYPE="BUTTON" VALUE="Click Me!" onclick="startLongProcess();">


<div STYLE="BORDER: buttonhighlight 2px outset; FONT-SIZE: 8pt; Z-INDEX:
4; FONT-FAMILY: Tahoma; POSITION: absolute; BACKGROUND-COLOR: buttonface;
DISPLAY: none; WIDTH: 350px; CURSOR: default" ID="divProgressDialog"
onselectstart="window.event.returnValue=false;">
<div STYLE="PADDING: 3px; FONT-WEIGHT: bolder; COLOR: captiontext;
BORDER-BOTTOM: white 2px groove; BACKGROUND-COLOR: activecaption">
   Downloading Requested Document
</div>
<div STYLE="PADDING: 5px">
   Please wait while I download the document you requested.
</div>
<div STYLE="PADDING: 5px">
   This may take several seconds.
</div>
<div STYLE="PADDING: 5px">
      <div ID="divProgressOuter" STYLE="BORDER: 1px solid threedshadow;
WIDTH: 336px; HEIGHT: 15px">
         <div ID="divProgressInner" STYLE="COLOR: white; TEXT-ALIGN:
center; BACKGROUND-COLOR: infobackground; MARGIN: 0px; WIDTH: 0px; HEIGHT:
13px;"></div>
      </div>
</div>
<div STYLE="BORDER-TOP: white 2px groove; PADDING-BOTTOM: 5px; PADDING-TOP: 3px;
BACKGROUND-COLOR: buttonface; TEXT-ALIGN: center">
      <INPUT STYLE="FONT-FAMILY: Tahoma; FONT-SIZE: 8pt" TYPE="button"
ID="btnCancel" onclick="stopLongProcess();" VALUE="Cancel">
</div>
</div>



<div ID="divModal"
STYLE="BACKGROUND-COLOR: white; FILTER: alpha(opacity=75); LEFT: 0px; POSITION:
absolute; TOP: 0px; Z-INDEX: 3"
onclick="window.event.cancelBubble=true; window.event.returnValue=false;">
</div>

</body>
</html>

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