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JavaScript - Text Lines Fading Into Each Other - How To Center Them ?
Hi guys.
I'm using a jquery plugin called innerfade, which I got from he http://medienfreunde.com/lab/innerfade/ . I've used it to fade few lines of text into each other: Code: <div class="fade"> <p>Line 1 asdfghjkl</p> <p>Line 2 sdasdsafasdgedgr</p> <p>Line 3 ddddddddddddddddddddd</p> </div> So only first line appears on page load, then after few seconds fades into Line 2 etc. Everything works perfect, but there is only one problem - the text is not centered even if it says so in CSS. Since the lines have different lenghts, the shorter the line the more it's aligned to the left. I've added properties for both div and p's - tried all combinations of text-align: center and margin left & right: auto. No joy. But when I remove the script all 3 lines appear centered perfectly. So my question is how do I make them centered? I presume it has to be added in the JS part since it seems to be overriding the CSS. Here is the script's full code: Code: (function($) {
$.fn.innerfade = function(options) {
return this.each(function() {
$.innerfade(this, options);
});
};
$.innerfade = function(container, options) {
var settings = {
'animationtype': 'fade',
'speed': 'normal',
'type': 'sequence',
'timeout': 2000,
'containerheight': 'auto',
'runningclass': 'innerfade',
'children': null
};
if (options)
$.extend(settings, options);
if (settings.children === null)
var elements = $(container).children();
else
var elements = $(container).children(settings.children);
if (elements.length > 1) {
$(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
for (var i = 0; i < elements.length; i++) {
$(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
};
if (settings.type == "sequence") {
setTimeout(function() {
$.innerfade.next(elements, settings, 1, 0);
}, settings.timeout);
$(elements[0]).show();
} else if (settings.type == "random") {
var last = Math.floor ( Math.random () * ( elements.length ) );
setTimeout(function() {
do {
current = Math.floor ( Math.random ( ) * ( elements.length ) );
} while (last == current );
$.innerfade.next(elements, settings, current, last);
}, settings.timeout);
$(elements[last]).show();
} else if ( settings.type == 'random_start' ) {
settings.type = 'sequence';
var current = Math.floor ( Math.random () * ( elements.length ) );
setTimeout(function(){
$.innerfade.next(elements, settings, (current + 1) % elements.length, current);
}, settings.timeout);
$(elements[current]).show();
} else {
alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
}
}
};
$.innerfade.next = function(elements, settings, current, last) {
if (settings.animationtype == 'slide') {
$(elements[last]).slideUp(settings.speed);
$(elements[current]).slideDown(settings.speed);
} else if (settings.animationtype == 'fade') {
$(elements[last]).fadeOut(settings.speed);
$(elements[current]).fadeIn(settings.speed, function() {
removeFilter($(this)[0]);
});
} else
alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
if (settings.type == "sequence") {
if ((current + 1) < elements.length) {
current = current + 1;
last = current - 1;
} else {
current = 0;
last = elements.length - 1;
}
} else if (settings.type == "random") {
last = current;
while (current == last)
current = Math.floor(Math.random() * elements.length);
} else
alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
setTimeout((function() {
$.innerfade.next(elements, settings, current, last);
}), settings.timeout);
};
})(jQuery);
// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
if(element.style.removeAttribute){
element.style.removeAttribute('filter');
}
}
And call: Code: $(document).ready(
function(){
$('.fade').innerfade({
animationtype: 'fade',
speed: 750,
timeout: 5000,
type: 'random',
containerheight: '1em'
});
});
Similar TutorialsHello everyone. I was wondering if anyone could help me come up with a script for fading text in and out then changing the text to something different when it fades back in again. I want to overlay a series of quotes on my website across the top and have them display for about 15 seconds then fade out to a new quote and have it cycle through them all indefinitely. I am pretty new to javascript and not much more experienced in html in general, so please be as thorough as possible. I'm a true noob Thanks!
I'm having major pains trying to figure this out. I'm kind of new to Javascript, I need to open a text file from an external server, store each line in an array, then search that array for a certain word (HIGH), and if it exists then write something to the webpage, and if not, write something else. Here is what I have so far: Code: <html>
<head>
<title>Test</title>
<script>
<!--
function test(x) {
if (wxd1txt.readyState === 4 && wxd1txt.status === 200) { // Makes sure the document is ready to parse and Makes sure it's found the file.
var wxd1text = wxd1txt.responseText;
var wxd1array = wxd1txt.responseText.split("\n"); // Will separate each line into an array
var wxd1high = wxd1array.toString(); //Converting the String content to String
//var highsearchreg = new RegExp("HIGH");
//var wxd1high = wxd1array[x].search(highsearchreg);
document.write(wxd1high);
if (wxd1high.search("HIGH") >= 0){
document.write("HIGH RISK");}
else {
document.write("NO RISK");}
}
}
//-->
</script>
</head>
<body>
Hi!
<script>
<!--
var Today = new Date();
var ThisDay = Today.getDate();
var ThisMonth = Today.getMonth()+1;
var ThisYear = Today.getYear();
var Hour = Today.getHours();
var Day2 = Today.getDate()+1;
var Day3 = Today.getDate()+2;
if (navigator.appName != "Microsoft Internet Explorer") {
ThisYear = ThisYear + 1900;}
if (ThisMonth < 10) {
ThisMonth = "0" + ThisMonth;}
if (ThisDay < 10) {
ThisDay = "0" + ThisDay;}
if (Hour == 2 || Hour == 22 || Hour == 23 || Hour == 0 || Hour == 1) {
var wxHourd1 = 0600}
else if (Hour >= 3 && Hour <= 10) {
var wxHourd1 = 1300;}
else if (Hour >= 11 && Hour <= 13) {
var wxHourd1 = 1630;}
else if (Hour >= 14 && Hour <= 16) {
var wxHourd1 = 2000;}
else if (Hour >= 17 && Hour <= 21) {
var wxHourd1 = 0100;}
//var wxurld1 = "http://www.spc.noaa.gov/products/outlook/archive/"+ThisYear+"/KWNSPTSDY1_"+ThisYear+""+ThisMonth+""+ThisDay+""+wxHourd1+".txt";
var wxurld1 = "http://www.spc.noaa.gov/products/outlook/archive/2010/KWNSPTSDY1_201005101300.txt" //(High risk day for testing)
//document.write(wxurld1); //Use this to verify this section is working
if (window.XMLHttpRequest)
{
wxd1txt=new XMLHttpRequest();
}
else // IE 5/6
{
wxd1txt=new ActiveXObject("Microsoft.XMLHTTP");
}
wxd1txt.open("GET", wxurld1, true);
wxd1txt.onreadystatechange = test();
// -->
</script>
</body>
</html>
When added to a webpage, nothing shows up except the "Hi!" and there are no errors in the Javascript Console in Google Chrome. Is this possible with Javascript, and if so, what am I doing wrong or not doing? Also, I have 2 URLs, one is a text file that has the HIGH text I want for an example, the other is the current file, which shouldn't have HIGH in it (unless the weather in the US turns really bad) Hey all. I'm looking for a way to have a single, random line fetched from multiple text files, and then have that combination output somewhere, whether just to some field or another text file. For example: Text file A - I like I hate I love I despise I cherish Text file B - apples bananas oranges grapes grapefruit pineapple cherries Text file C - some of the time. most of the time. a lot of the time. pretty much never. So it would go in, get a line from each, and display something like: I love - grapefruit - most of the time. I cherish - pineapple - some of the time. etc. etc. I know it's a weird-sounding example, but you get the point. The line choices don't have to be separated by hyphens, but they preferably would be separated by something, like a comma, semi-colon, slash, whatever. I know this is pretty much a web coding forum, so that would be fine if I had to host it on my server or open it with a browser. But it would be optimal if this could be made into a standalone executable. I'm basically looking for something like Random Line Picker, just with the added functionality I mentioned. I'd be willing to make a little donation to someone if coding this would be a little difficult. Thanks! Hi all, I hoping somebody can help me. I'm trying to acheive a line of text (with multiple links on each line) that change at set intervals. The code below seems to be working but I can only get working links on the first line that appears. Please can somebody help a gal out? xo [CODE] <html> <head> <title>Rotating Text</title> <script type="text/javascript"> var rotatingTextElement; var rotatingText = new Array(); var ctr = 0; function initRotateText() { rotatingTextElement = document.getElementById("textToChange"); rotatingText[0] = rotatingTextElement.innerHTML; rotatingText[1] = "why won't you work!?!?!?"; rotatingText[2] = "purdy please"; setInterval(rotateText, 5000); } function rotateText() { ctr++; if(ctr >= rotatingText.length) { ctr = 0; } rotatingTextElement.innerHTML = rotatingText[ctr]; } window.onload = initRotateText; </script> </head> <body> <span id="textToChange">log into your <a href="http://www.hotmail.com/">please</a> policy.</a> | can you <a href="http://www.google.com"> me?</a> </span> </body> </html> Hi! I'm using a site that is designed to have a horizontal scroll. I need the contents of each section to be centered horizontally with JS so if the resolution changes, the text is centered too. The site is www.big-band.com.ar Any help is very appreciated. Thanks a lot!! Not done any coding for a LONG time. I want to get the value of the opacity for a element. I'm using Nightly 9.0a1. Also, from what I have read Firefox should us this to SET the opacity style: Code: obj.style.opacity = opacity/100; But this does not see to work in the CSS. In the CSS the value ranges from 0 to 1. So 50% would be 0.5 My current function stops working before executing the alert command. I'm guessing i'm trying to get the style value wrong? Code: function fadeByid(objId) {
if (document.getElementById) {
obj = document.getElementById(objId);
opacity = obj.style.opacity;
alert(opacity);
if (opacity >= 100) {
setOpacity(obj, opacity);
opacity -= 10;
window.setTimeout("fadeByid('"+objID+"','"+opacity+")", 100);
}
}
}
Hey everyone, What I need to do is have my website so when it loads on the homepage for the first time its starts of with a blank (specified color) background, then the logo fades in the middle, then a few seconds later that all fades away to reveal the website. Is this possible without forwarding to separate pages and without flash? Thanks all. Hey Guys, I'm pretty new to Javascript, maybe you can help me with a small piece. I have 4 images, they are displayed 2x2. Initially they rest at 0.3 opacity.When you hover over one, it goes to 1 opacity. When you click an image, it becomes the selected image and stays at 1 opacity. I have this all working fine. My problem is, when you click another image, the "selected" image stays at 1 opacity until you roll over it again. I want it to automatically fade back to 0.3 opacity when another image is selected. I will attach my code: Code: <style type="text/css">
.MouseOver
{
opacity:0.3;
filter:alpha(opacity=30);
}
</style>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">
</script>
<script type="text/javascript">
currentImage=null;
$(function() {
$('.MouseOver').each(function() {
$(this).hover(
function() {
$(this).stop().animate({ opacity: 1.0 }, 300);
},
function() {
if(currentImage != this) {
$(this).stop().animate({ opacity: 0.3 }, 300);
}
})
});
});
function doSomething(pic) {
currentImage=pic;
}
</script>
The images then have .MouseOver class and the onClick calls the doSomething function. I'd appreciate any help you can give me. Thanks so much. Hi guys! I'm trying to make a div layer (id "tehz") fade in using Java. Problem is, it doesn't go through the animation, it just skips to the last stage. If I put an alert to show me the value of "cat" at every step it works just fine. Can anyone please tell me what's the matter? Code: function vis(cat) {
if(cat<=90) {
// alert(cat)
document.getElementById("tehz").style.opacity=cat/100;
document.getElementById("tehz").style.filter="alpha(opacity="+cat+")"
cat=cat*1+1
setTimeout(vis(cat),1000);
}
}
Hey everyone, For a site I'm currently working on I needed the index page to start out blacked out, have an animated logo fade in, then fade out again before the main page contents fading up all without redirecting etc. I used the following to do this and it works except for one thing. Once the overlay div has faded, it seems to take around 20-30 seconds before the main contents becomes usable. Any ideas for a fix? Code: <body style="overflow:hidden;" onload="MM_preloadImages('images/enter_o.png')">
<div id="overlay" ><img border="0" src="images/animatelogo.gif" alt="img" /></div>
<script type="text/javascript">
/*<![CDATA[*/
function fade(o){
var oop=this,obj=document.getElementById(o.ID),img=obj.getElementsByTagName('IMG')[0];
this.obj=obj;
var img=document.getElementById(o.ID).getElementsByTagName('IMG')[0];
img.style.top=this.wwhs()[1]/2-img.height/2+'px';
this.mS=o.Duration||1000;
this.animate(img,new Date(),0,100,true);
img.style.visibility='visible';
}
fade.prototype={
animate:function(obj,srt,f,t,sc){
var oop=this,ms=new Date().getTime()-srt,now=Math.floor(sc=='s'?(t-f)*Math.sin(this.inc*ms)+f:sc=='c'?t-(t-f)*Math.cos(this.inc*ms):(t-f)/this.mS*ms+f);
this.now=Math.max(now,f<0||t<0?now:0);
obj.style.filter='alpha(opacity='+now+')';
obj.style.opacity=obj.style.MozOpacity=obj.style.WebkitOpacity=obj.style.KhtmlOpacity=now/100-.001;
if (ms<this.mS){
this.dly=setTimeout(function(){ oop.animate(obj,srt,f,t,sc); },10);
}
else if (sc){
this.animate(this.obj,new Date(),100,0,false);
}
else {
document.body.removeChild(obj);
}
},
wwhs:function(){
if (window.innerHeight) return [window.innerWidth-10,window.innerHeight-10,window.pageXOffset,window.pageYOffset];
else if (document.documentElement.clientHeight) return [document.documentElement.clientWidth-10,document.documentElement.clientHeight-10,document.documentElement.scrollLeft,document.documentElement.scrollTop];
return [document.body.clientWidth,document.body.clientHeight,document.body.scrollLeft,document.body.scrollTop];
}
}
setTimeout(function(){
new fade({
ID:'overlay',
Duration:11500
});
},10);
/*]]>*/
</script>
<table class="mainbody" width="900" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td align="center">
<div style="position:absolute; left: 50%; top: 50%; margin: -197px 0 0 -300px; height: 394px; width: 600px; text-align:center;" />
<iframe src="http://player.vimeo.com/video/******44?title=0&byline=0&portrait=0&color=000000" width="600" height="328" frameborder="0"></iframe>
<br /><br /><a href="films.php" class="entrytext"><img src="images/enter.png" id="Image1" onmouseover="MM_swapImage('Image1','','images/enter_o.png',1)" onmouseout="MM_swapImgRestore()"></a></div>
</td>
</tr>
</table>
</body>
So as a breakdown, the page should load black, remain black as a logo fades into it, plays through and fades out, followed by the main content fading up and becoming usable. All this happens as desired except after the main content is visible it takes ages to become active as if the overlay is still there :-\ Thanks Hi, I am having difficulty (tearing my hair out) with this problem. I have written a page as a learning experince for JavaScript. The page is here. The fade in works perfectly for ONLOAD and for ONMOUSEOVER but not for ONMOUSEOUT. The JavaScript code is as follows: Code: var d_opacity ;
var e_element ;
var t_timeout ;
function fadeInElement(s_element_to_fade_in)
{
d_opacity = 0.25 ;
e_element = document.getElementById(s_element_to_fade_in) ;
(e_element.style).display = "" ;
(e_element.style).opacity = d_opacity ;
t_timeout = setTimeout("fadeIn()", 125) ;
}
function fadeIn()
{
if (d_opacity == 1.0)
{
clearTimeout(t_timeout) ;
}
else
{
d_opacity += 0.075 ;
(e_element.style).opacity = d_opacity ;
t_timeout = setTimeout("fadeIn()", 125) ;
}
}
function fadeOutElement(s_element_to_fade_out)
{
e_element = document.getElementById(s_element_to_fade_out) ;
d_opacity = (e_element.style).opacity ;
t_timeout = setTimeout("fadeOut()", 125) ;
// (e_element.style).display = "none" ;
}
function fadeOut()
{
if (d_opacity == 0.25)
{
clearTimeout(t_timeout) ;
(e_element.style).display = "none" ;
}
else
{
d_opacity -= 0.075 ;
(e_element.style).opacity = d_opacity ;
t_timeout = setTimeout("fadeOutn()", 125) ;
}
}
When I use the commented out line in fadeOutElement(), the menu disappears which says to me ONMOUSEOUT is being triggered correctly, but if I do the fading out code, it does nothing. Any help greatly appreciated. How am I able to have a gallery of images fading in and out as the background of a DIV? It's currently just a static background using CSS. You can view the HTML page in question he http://aksdesigns.co.uk/temp/template.html The DIV container is the one with the ID of #MainContent Code: #MainContent {
width: 980px;
height: 550px;
margin: 0 auto;
padding: 0px;
background-image: url(images/Content-bg-1.jpg);
background-repeat: no-repeat;
background-position: top center;
border-left: 2px solid #153365;
border-right: 1px solid #FFF;
}
It probably couldn't be done using CSS be how could I achieve this with Javascript? So far I have this written up which does work well. However, the problem is if one toggles the fadeOut function while the fadeIn function is still in action. That causes the functions to collide and have to element being faded start flashing or freezing. Is there a simple way to prevent this? Thank you. Code: function fadeIn(elementId) {
var element = document.getElementById(elementId);
if(element.style.display === 'none') {
element.style.display = 'block';
element.style.opacity = '0';
}
if(element.style.opacity < 1) {
var opacityFloat = parseFloat(element.style.opacity);
element.style.opacity = opacityFloat + 0.1;
setTimeout("fadeIn('" + elementId + "')", 50);
}
}
function fadeOut(elementId) {
var element = document.getElementById(elementId);
if(element.style.opacity > 0) {
var opacityFloat = parseFloat(element.style.opacity);
element.style.opacity = opacityFloat - 0.1;
setTimeout("fadeOut('" + elementId + "')", 50);
}
if(element.style.opacity == 0) {
element.style.display = 'none';
}
}
I've prepared the following page: http://www.ko-go.gr/restaurant/index1a.html but I would prefer the background images to fade in and out rather than change abruptly. I've spent hours searching for appropriate code, but have met a dead end so far. Incidentally, I presume that the delay before the first background image appears is because of all the images pre-loading. Can anyone suggest a way to immediately display the first image? Thanks for taking the time to read this... Sorry, I'm new in javascript and i can't understand what's wrong with my code.. I've spent some time searching for the solution, but i give up. For some of you may it be just a piece of cake, so maybe you can look at this: Code: <script language="javascript">
var n_pics = 3;
var current = 1;
var opacity = 1;
var opacity_IE = 100;
function fade(how)
{
if(how==0)
{
if(opacity>0)
{
opacity = opacity - 0.1;
}
else return;
}
else
{
if(opacity<1)
{
opacity = opacity + 0.1;
opacity_IE = opacity * 100;
}
else return;
}
document.getElementById('fade_show').style = 'opacity:'+opacity+'; filter:alpha(opacity='+opacity_IE+')'; //break_point 1
var temp = 'fade('+how+')';
setTimeout(temp, 1000);
}
function main_loop()
{
fade(0); //break_point 2
if(current == n_pics)
{
current = 1;
}
else
{
current = current + 1;
}
document.getElementById('fade_show').innerHTML = '<img src="images/fade_show/'+current+'.jpg" />';
fade(1);
main_loop();
}
</script>
</head>
<body onload="main_loop();">
fade(0) means to fade out, and fade(1) - to fade in. on IE i get 'Member Not found' on break_point 1 and too much recursion at breake_point 2 can you help me? Alrighty so here's what I have. Live example: http://www.thestrikeforum.com/ex/ It's a image slideshow that dynamically gets all the images (via php) in the current directory and puts them into the slideshow array. The array then randomly displays the images in the slideshow (via javascript). There are 5 images in the folder rotateimage which also has the php script getimages.php in it. Currently only the first image fades in however I want all the images to fade in as the first one does. Codes: Php script that gets all the images for the array: PHP Code: <? //PHP SCRIPT: getimages.php Header("content-type: application/x-javascript"); //This function gets the file names of all images in the current directory //and ouputs them as a JavaScript array function returnimages($dirname=".") { $pattern="(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)"; //valid image extensions $files = array(); $curimage=0; if($handle = opendir($dirname)) { while(false !== ($file = readdir($handle))){ if(eregi($pattern, $file)){ //if this file is a valid image //Output it as a JavaScript array element echo 'galleryarray['.$curimage.']="'.$file .'";'; $curimage++; } } closedir($handle); } return($files); } echo 'var galleryarray=new Array();'; //Define array in JavaScript returnimages() //Output the array elements containing the image file names ?> Main html page with the javascript: Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="rotateimage/getimages.php"></script>
<script type="text/javascript">
var curimg=0
var max=galleryarray.length
var random=Math.floor(Math.random()*max)
function rotateimages(){
document.getElementById("slideshow").setAttribute("src", "rotateimage/"+galleryarray[random])
//curimg=(curimg<galleryarray.length-1)? curimg+1 : 0
random=Math.floor(Math.random()*max)
}
function initImage() {
imageId = 'slideshow';
image = document.getElementById(imageId);
setOpacity(image, 0);
image.style.visibility = 'visible';
fadeIn(imageId,0);
}
function setOpacity(obj, opacity) {
opacity = (opacity == 100)?99.999:opacity;
// IE/Win
obj.style.filter = "alpha(opacity:"+opacity+")";
// Safari<1.2, Konqueror
obj.style.KHTMLOpacity = opacity/100;
// Older Mozilla and Firefox
obj.style.MozOpacity = opacity/100;
// Safari 1.2, newer Firefox and Mozilla, CSS3
obj.style.opacity = opacity/100;
}
function fadeIn(objId,opacity) {
if (document.getElementById) {
obj = document.getElementById(objId);
if (opacity <= 100) {
setOpacity(obj, opacity);
opacity += 10;
window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
}
}
}
window.onload=function(){
setInterval("rotateimages()", 2500)
initImage()
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Test</title>
</head>
<body>
<img src="rotateimage/pic1.jpg" name="slideshow" width="350" height="350" id="slideshow"/>
</body>
</html>
If anyone could assist me in doing so or can help me find a better way to do the fading images for the slideshow feel free to share.. here's the main page code WITHOUT the fading code: Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="rotateimage/getimages.php"></script>
<script type="text/javascript">
var curimg=0
var max=galleryarray.length
var random=Math.floor(Math.random()*max)
function rotateimages(){
document.getElementById("slideshow").setAttribute("src", "rotateimage/"+galleryarray[random])
//curimg=(curimg<galleryarray.length-1)? curimg+1 : 0
random=Math.floor(Math.random()*max)
}
window.onload=function(){
setInterval("rotateimages()", 2500)
initImage()
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Test</title>
</head>
<body>
<img src="rotateimage/pic1.jpg" name="slideshow" width="350" height="350" id="slideshow"/>
</body>
</html>
I have a jQuery Slideshow script that i'm using and it's all done in 6 lines. Code: $(function(){
$('.fadein img:gt(0)').hide();
setInterval(function(){
$('.fadein :first-child').fadeOut()
.next('img').fadeIn()
.end().appendTo('.fadein');},
3000);
});
</script>
I'm having a problem centering it on my website and keeping the images behind each other every time a picture changes. The CSS uses absolute positioning to hide the images behind each other. The fadeIn part of the CSS uses relative positioning. The CSS for the fading image slideshow is at the end of the css. Code: .fadein {
position:relative;
width:100%;
height:300px;
background-color:#000;
overflow:hidden
}
.fadein img {
position:relative;
left:300px;
width:auto;
text-align:center;
top:0px;
}
jonathaneiger.com I'm designing a page to fade multiple images (three) in and out over a set period of time (one minute, say). The code I have works as follows: I define an array and fill it with the div objects I want to fade in and out. I have some simple tags (2 for opaque, 1 for fading in, -1 for fading out, etc.) that I set to show the state of the object. First I check if the object is opaque, and if so set it to fade along with a time; Or if it's transparent I give it a 1 in 10 chance of fading in during this iteration. If it's currently fading in or out I check to make sure it's on track and change the opacity of the div accordingly. Originally, I had the function call back to itself using setTimeout after the loop had gone through all the divs and changed their opacities appropriately. This caused an out of memory error (though, strangely, if I had any alerts in the function it didn't give me the error). So the version below has the code in a while loop to let it run for 20 seconds - this gives me the "a script...run slowly, do you want to continue the script?" message. So I have several questions: 1) First and foremost, why is my function causing out of memory/run slowly errors and what is the best way to fix that? 2) Is there a better way to code this effect (final result will be six lights fading in and out for a minute or so). 3)I'm not an experienced programmer, so any bad practices, ways to streamline, no no's, etc. that you see, please point out. I've only posted the script here - the page simple consists of three divs (id's grad0, grad1, grad2) and a call to the function copied here. Thanks in advance. Code:
function commencez(){ //parent function to store var's
var TimeToFade = 10000;
theArray = new Array(2);
var wrench = new Date().getTime();
for (var a=0; a<3; a++){ //fill the array with objects
theArray[a] = document.getElementById("grad" + a);
theArray[a].FadeState = -2; //start them transparent
}
function fader() {
var check = new Date().getTime(); //stops the function after 30 seconds
if( check <= wrench + 30000 )
{
return;
}
for(var i=0; i<3; i++){
if (theArray[i].FadeState !=1 && theArray[i].FadeState != -1)
{
if( theArray[i].FadeState == 2)
{
theArray[i].FadeState = -1;
theArray[i].FadeTimeLeft = TimeToFade;
theArray[i].FadeBegan = new Date().getTime();
}
if( theArray[i].FadeState == -2)
{
var rndm=Math.floor(Math.random()*11);
if( rndm == 1)
{
theArray[i].FadeState = 1;
theArray[i].FadeTimeLeft = TimeToFade;
theArray[i].FadeBegan = new Date().getTime();
}
}
}
if( theArray[i].FadeState == 1 || theArray[i].FadeState == -1)
{
var now = new Date().getTime();
since = now - theArray[i].FadeBegan;
if( theArray[i].FadeTimeLeft <= since )
{
theArray[i].style.opacity = theArray[i].FadeState == 1 ? '1' : '0.2';
theArray[i].style.filter = 'alpha(opacity = ' +
(theArray[i].FadeState == 1 ? '100' : '20') + ')';
theArray[i].FadeState = theArray[i].FadeState == 1 ? 2 : 2;
}
theArray[i].FadeTimeLeft -= since;
var howMuch = theArray[i].FadeTimeLeft / TimeToFade;
if( theArray[i].FadeState == 1)
{
howMuch = 1-howMuch;
theArray[i].style.opacity = howMuch;
theArray[i].style.filter = 'alpha(opacity = ' + (howMuch*100) + ')';
}
if( theArray[i].FadeState == -1)
{
theArray[i].style.opacity = howMuch;
theArray[i].style.filter = 'alpha(opacity = ' + (howMuch*100) + ')';
}
}
} //close the for loop
setTimeout( fader() , 500); //last thing fader does is recall itself after half a second
} //close the fader function
fader();
} //close parent function
</script>
ok ive been searching for a way to make it so when i click on a link it brings up an image or text box...and then when you click on another link on the same page that text box fades out and the new one fades in... i know how to make images fade in and out and i can make them overlap each other and everything...but making it so i can click either as many times as i want and they keep overlapping is a bit outside my scope sorry...but through my scowering of this forum i found an old post on this thread he http://codingforums.com/showthread.php?t=171655 where a user "spudhead" posted what i think im looking for...but it didnt work for me when i tried it... again, sorry if this isnt how you post idk im new here =/ i was going to post on the old thread but i wasnt sure if it would be answered... thanks for the responses... |
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