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JavaScript - Crossfade With Scriptaculous
I am trying to persuade the javascript to fade from one image into the next, but I'm only succeeding at fading into nothing, and then making the next image appear. The effect can be seen he http://userpages.bright.net/~toddw/orbit/aheader0.html
The effect that I am trying to achieve is he http://userpages.bright.net/~toddw/orbit/aheader9.html the problem with the second example is that I can't figure out how to add the navigation controls,… so I thought it would be easier to address the crossfade with the first example. Code: var openBtn2 = "images/Button_open.gif";
var solidBtn2 = "images/Button_solid.gif";
var intervalID2;
var showing2 = 1;
var truckArray = new Array("","truck1","truck2","truck3","truck4");
var truckbtnArray = new Array("","truckBtn1","truckBtn2","truckBtn3","truckBtn4");
var inProgress2 = false;
function swapTruck(next) {
if (inProgress2) return;
inProgress2 = true;
if (next == 0) { next = showing2 + 1; } //if swapTruck is not called from a button
if (next == 5) { next = 1; } ***//if its the last news item
new Effect.Fade(truckArray[showing2], { duration: 0.3});
setTimeout(function() {
$(truckbtnArray[showing2]).src = openBtn2
$(truckbtnArray[showing2]).style.cursor = "pointer"
$(truckbtnArray[next]).src = solidBtn2
$(truckbtnArray[next]).style.cursor = "default"
new Effect.Appear(truckArray[next], { duration: 0.3})
showing2 = next
inProgress2 = false
}, 300);
clearInterval(intervalID2);
intervalID2 = setInterval("swapTruck(0)", 25000);
}
Event.observe(window, 'load', function() { //this binds the function() to the event window.onload
intervalID2 = setInterval("swapTruck(0)", 25000);
$("truckBtn1").src = solidBtn2;
$("truckBtn2").src = openBtn2;
$("truckBtn2").style.cursor = "pointer";
$("truckBtn3").src = openBtn2;
$("truckBtn3").style.cursor = "pointer";
$("truckBtn4").src = openBtn2;
$("truckBtn4").style.cursor = "pointer";
});
My html looks like this: <!-- define images for fading into each other --> <div id="slider"> <div id="truck1"><img src="c5_app_2.jpg" title="" /></div> <div id="truck2" style="display:none;"><img src="infolink_main.jpg" title="" /></div> <div id="truck3" style="display:none;"><img src="rr5700_app_2.jpg" title="" /></div> <div id="truck4" style="display:none;"><img src="c5_app_1.jpg" title="" /></div> </div> <!-- navigational buttons for image fade --> <div class="truck_buttons"> <img src="(EmptyReference!)" onClick="swapTruck(1)" id="truckBtn1"> <img src="(EmptyReference!)" onClick="swapTruck(2)" id="truckBtn2"> <img src="(EmptyReference!)" onClick="swapTruck(3)" id="truckBtn3"> <img src="(EmptyReference!)" onClick="swapTruck(4)" id="truckBtn4"> </div> Similar TutorialsGreetings, I am using the javascript scriptaculous library. On my Green Products webpage, if the user clicks "Subcategory", "Maximum Price", "Business Name", or "Search For", a green dialogue box should appear giving the user a tooltip. This works great for browsers other than IE. I am getting the following error: Quote: Message: Object doesn't support this property or method Line: 543 Char: 3 Code: 0 URI: http://www.green-watch.org/scriptaculous/src/effects.js Message: Object doesn't support this property or method Line: 529 Char: 3 Code: 0 URI: http://www.green-watch.org/scriptaculous/src/effects.js This is a fairly common library. What is the solution to this problem? Always seems to be problems with IE... Thanks in advance for any solutions or suggestions. Sincerely, Travis Walters Hi there, for a site I'm working on I needed an interactive crossfading slideshow (one that doesn't just run automatically, but with 'previous' and 'next' links) and noticed that all the solutions I stumbled upon fall into one of two categories: 1.) the ones that in some way or other break if the user clicks too fast through the images (i.e. fast enough that the previous crossfade is not completely finished when triggering the next one) 2.) the ones that block any user interactions until the last crossfade is finished Obviously neither is very useful, so I wrote my own. I'm just wondering now, does anyone of you know of any good reusable crossfading slideshow that not only works as it should, but does so without blocking user interaction while fading? As a user, I don't have the patience for those time wasters any more. If there's nothing good out there, I'm tempted to make it a jQuery plugin, but I wouldn't much like to find out later that there has been a perfectly good plugin out there all along. So, if you know of one or have any other helpful suggestions, please tell me. I am working on a simple image crossfade for my website, and i downloaded a good file folder with a javascript code that works well. it's exactly what i'm trying to achieve. yet, when i put in the code into my webpage index it doesn't fade like it should. the images fade out but don't cross-fade into each other. I tried testing the original file/script with alternate images/jpgs to see if my images were messing things up but it was fine, yet when i use MY webpage in MY root folder it doesn't work. so is there something wrong with my rootfolder that is messing up the javascript? i'm pulling my hair out because the code looks fine to me. please help! thanks!! jason This is a image background slideshow im trying to incorp into a DIV instead of the <body>. Ive tried getElementById. But im still having trouble getting it to work. Also the crossfade only works in Internet explorer, i looked up the code to try and fix it for Firefox but i think it only works with CSS3. Any input would be great, i dont know a lot about Javascript most of this is self taut with a little experience using C++. Code: <script language="JavaScript">
<!----------------------------------------------------------------------------
var speed = 3000;
var crossFadeDuration = 3;
var Pic = new Array();
Pic[0] = 'drawing1.jpg';
Pic[1] = 'drawing2.jpg';
Pic[2] = 'drawing1.jpg';
Pic[3] = 'drawing2.jpg';
Pic[4] = 'drawing1.jpg';
Pic[5] = 'drawing2.jpg';
var t;
var j = 0;
var p = Pic.length;
var preLoad = new Array();
for (i = 0; i < p; i++)
{
preLoad[i] = new Image();
preLoad[i].src = Pic[i];
}
function runSlideShow()
{
if (document.MozOpacity!=null)
{
/*trying to fix crossfade for Firefox*/
obj.style.MozOpacity = (opacity/100) - .001;
}
else if (document.all)
{
document.body.style.filter="blendTrans(duration=crossFadeDuration)";
document.body.filters.blendTrans.Apply();
document.body.filters.blendTrans.Play();
}
if (document.body)
{
document.body.background = Pic[j];
j = j + 1
if (j > (p-1)) j=0
t = setTimeout('runSlideShow()', speed)
}
}
//--------------------------------------------------------------------------------
</script>
</head>
<body onload="runSlideShow()" bgcolor="#000000">
Hi I am trying to make all the cells within a table droppable spaces, using the scriptaculous library. However I am not able to do so, and I am not certain why. The table cells are creating within the javascript. I then try to apply the droppables to the table cells through iteration, through the function when the document loads. It does not seem to be working. The document accesses an external php page and has inline php within a div element. I am uncertain if by having the draggable elements instantiated within the php script, that this would be causing any problem, as I cannot see how this would be, the php draggables all appear to be corresponding to the css in the document. Any help with the droppables would be appreciated. I have set up a css class hover, so that when the draggable passes over the droppable the edges of the droppable area should be turning blue, but this is not happening. Not sure what the problem is. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META name="generator" content="Free Script Editor, see www.freescripteditor.com">
<TITLE>Email Client</TITLE>
<link rel="stylesheet" type="text/css" href="http://localhost/email/styles/style1.css"/>
<script src="javascript/prototype.js" type="text/javascript"></script>
<script src="javascript/scriptaculous.js" type="text/javascript"></script>
<script src="javascript/dragdrop.js" type="text/javascript"></script>
<script src="javascript/controls.js" type="text/javascript"></script>
<script src="javascript/effects.js" type="text/javascript"></script>
<script type="text/javascript">
var xmlhttp = false;
//check if we are using IE
try {
//If the javascript version is greater than 5.
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
alert ("You are using Microsoft Internet Explorer.");
}
catch(e)
{
//if not, then use the older active x object.
try {
//if we are using Internet Explorer
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
alert("You are using Microsoft Internet Explorer");
}
catch (E)
{
xmlhttp = false;
}
}
//If we are using a non-IE browser, crea a javascript instance of the object
if(!xmlhttp && typeof XMLHttpRequest != 'undefined')
{
xmlhttp = new XMLHttpRequest();
alert ("You are not using Microsoft Internet Explorer");
}
function getmessage(inbox_id)
{
var object = document.getElementById('content');
var server = "getmessage.php?inbox_id=" +inbox_id;
xmlhttp.open("GET", server);
xmlhttp.onreadystatechange = function()
{
if(xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
object.innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null);
}
function addTable()
{
var dv = document.getElementById("right");
var table = document.createElement("table");
var tbody = document.createElement("tbody");
var x = 0;
//create the table rows
for(var j =0; j <=2; j++)
{
var row = document.createElement("tr");
//create the table columns
for (var k =0; k<=4;k++)
{
x++;
var cell = document.createElement("td");
var celltext = document.createTextNode(x);
cell.appendChild(celltext);
cell.setAttribute("className", "droparea");
cell.setAttribute("id", "x");
row.appendChild(cell);
}
//add the row to the end of the table body
tbody.appendChild(row);
}
table.appendChild(tbody);
dv.appendChild(table);
table.setAttribute("className", "tbl");
}
document.observe("dom:loaded", function()
{
var dh;
var cells = document.getElementsByTagName('td');
for (var z = 0; z <= cells.length; z++)
{
dh = cells[z].getAttribute('id');
if(dh)
{
Droppables.add('dh', {accept:'draggable', hoverclass: 'hover'});
}
}
});
</script>
</HEAD>
<BODY onload="addTable()">
<div class="container" id="container">
<!--header div - for message 'new', 'reply' -->
<div class="header">
<script type="text/javascript" src="buttons/header_nav.js"></script>
</div>
<!-- end of header div-->
<!--Begin the div class left - this will hold the inbox emails for review-->
<div class="left">
<?PHP
include ($_SERVER['DOCUMENT_ROOT'].'\email\database_connect\connect.php');
$str = "id";
$i = 0;
$inbox_query = "select i.inbox_id, i.to, i.subject, i.sent, i.message from inbox as i";
$inbox_result = mysql_query($inbox_query);
while($row = mysql_fetch_array($inbox_result))
{//start while trainer query
$inbox_id = $row['0'];
$to = $row['1'];
$subject= $row['2'];
$sent = $row['3'];
$message = $row['4'];
$i++;
echo "<div class='draggable' id='$str$i'>
$inbox_id $to $sent <a href='#' onclick='getmessage($inbox_id)'>$str$i $subject
$message</a>
<script type='text/javascript'>
new Draggable('$str$i', {scroll: window});
</script>
</div>";
}//end while inbox query
?>
</div> <!--end left div-->
<!--begin the right div - this is the right side of the screen frame for
postponed email area-->
<div class="right" id="right">
</div>
<!--end the right div element-->
<!--begin the main content div - this will hold sent message-->
<div class="content" id="content" overflow="auto">
</div>
<!--end content div-->
</div>
</BODY>
</HTML>
Code: I am trying to get the following image fade code to work but can't seem to figure out what the problem is. The images appear quickly (don't fade one to the other) in Firefox and Google and in IE8 when the image fades, even though the images are the same size, the new image starts out smaller and grows to the final size. Any suggestions are greatly appreciated.
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
// Set slideShowSpeed (milliseconds)
var slideShowSpeed = 5000;
// Duration of crossfade (seconds)
var crossFadeDuration = 2500;
// Specify the image files
var Pic = new Array();
Pic[0] = 'images/Monsanto.gif'
Pic[1] = 'images/Test2.jpg'
Pic[2] = 'images/Test3.jpg'
Pic[3] = 'images/Test4.jpg'
Pic[4] = 'images/Test5.jpg'
Pic[5] = 'images/Test1.jpg'
var t;
var j = 0;
var p = Pic.length;
var preLoad = new Array();
for (i = 0; i < p; i++) {
preLoad[i] = new Image();
preLoad[i].src = Pic[i];
}
preLoad.sort(function() {return 0.5 - Math.random()});
function runSlideShow() {
if (document.all) {
document.images.SlideShow.style.filter="blendTrans(duration=2)";
document.images.SlideShow.style.filter="blendTrans(duration=crossFadeDuration)";
document.images.SlideShow.filters.blendTrans.Apply();
}
document.images.SlideShow.src = preLoad[j].src;
if (document.all) {
document.images.SlideShow.filters.blendTrans.Play();
}
j = j + 1;
if (j > (p - 1)) j = 0;
t = setTimeout('runSlideShow()', slideShowSpeed);
}
// End -->
</script>
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