adding fade to change background with javascript - javascript

I have the following code for changing a divs background image with jquery, i need help to add a fade to the code so the image change with some effect
this is the code
jQuery(window).load(function(){
var images = ['blured/1.jpg','blured/2.jpg'];
var i = 0;
var timeoutVar;
function changeBackground() {
clearTimeout(timeoutVar); // just to be sure it will run only once at a time
jQuery('#maincont').css('background-image', function() {
if (i >= images.length) {
i=0;
}
return 'url(' + images[i++] + ')';
});
// call the setTimeout every time to repeat the function
timeoutVar = setTimeout(changeBackground, 6000);
}
// Call it on the first time and it will repeat
changeBackground();
});
Any help will be great!
i need to just change the background image, without fading the inside divs, this is the html
<div class="maincont" id="maincont">
<div class="containersrch">
<h1 class="lagro">some title</h1>
<div class="joinus">
<span>JOIN</span>
</div>
</div>

Maybe this is what you want?
$(function(){
var imgId = $('#maincont'), imgCount = 1, imgLast = 2;
setInterval(function(){
imgId.fadeOut('slow', function(){
if(++imgCount > imgLast)imgCount = 1;
imgId.css('background', "url('blured/"+imgCount+".jpg')");
imgId.fadeIn('slow');
});
}, 6000);
});
Now you can have multiple images, just change imgLast to the last number and make sure they have the correct URLs in your blured folder. Of course, the code above assumes you are using .jpg. I actually recommend the lossless compression of .png, but it won't matter if it's the image was taken as a .jpg.

Related

JavaScript header background fade

I am trying to get one background image to fade into another using a very simple if statement. Currently my background images do not fade into one and another, they first fade onto a white background and then the other image fades in after, I would however like them to fade into each other directly. Secondly there seems to be an error with my images displaying, so when the the limit of the array (1) is reached in the if statement then it will set a simple currentBackground variable to 0, meaning the backgrounds should start from 0 in the array, however, this does not happen and sometimes the image same image is displayed repetitively.
$(window).load(function() {
var images = ['img/fitness-bg-2.jpg','img/runner-header.jpg'];
var i = 0;
function changeBackground() {
$('#header').fadeOut(250, function(){
$('#header').css('background-image', function () {
if (i >= images.length) {
i = 0;
}
return 'url(' + images[i++] + ')';
});
$('#header').fadeIn(500);
})
}
changeBackground();
setInterval(changeBackground, 5000);
});

Fade In / Fade Out background images without white background

I want to create a website with background images that change over time with a fade in/fade out effect, but I don't want to use the existing jQuery fade in/fade out effect because with when one image faded out, a white background appeared before other image faded in. I found a plugin named Maximage that suits my request but it uses img tags while I want to work with background-image CSS (I have a good reason for doing this). Does anyone know how to do this?
Here's my HTML code:
<div id="wrapper">
//My contain here
</div>
Here's my JavaScript code so far:
//Auto change Background Image over time
$(window).load(function() {
var images = ['img/top/bg-1.jpg','img/top/bg-2.jpg','img/top/bg-3.jpg'];
var i = 0;
function changeBackground() {
$('#wrapper').fadeOut(500, function(){
$('#wrapper').css('background-image', function () {
if (i >= images.length) {
i = 0;
}
return 'url(' + images[i++] + ')';
});
$('#wrapper').fadeIn(500);
})
}
changeBackground();
setInterval(changeBackground, 3000);
});
Example: http://www.aaronvanderzwan.com/maximage/examples/basic.html
AHH ! Finally ! I found a nice technique ! I'm using a double wrapper.
The problem in your code is a bit logical. You can't fadeOut and fadeIn at the same time a single wrapper.
So the idea is to create two wrapper and to switch between them back and forth. We have one wrapper called: "wrapper_top" that encapsulate the second wrapper called: "wrapper_bottom". And the magic was to put beside the second wrapper: your content.
Thus having the structure ready which is the following:
<div id='wrapper_top'>
<div id='content'>YOUR CONTENT</div>
<div id='wrapper_bottom'></div>
</div>
Then a bit of JS+CSS and voilĂ  ! It will be dynamic with any amount of images !!!
Here is the implementation: http://jsbin.com/wisofeqetu/1/
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(window).load(function() {
var i =0;
var images = ['image2.png','image3.png','image1.png'];
var image = $('#slideit');
//Initial Background image setup
image.css('background-image', 'url(image1.png)');
//Change image at regular intervals
setInterval(function(){
image.fadeOut(1000, function () {
image.css('background-image', 'url(' + images [i++] +')');
image.fadeIn(1000);
});
if(i == images.length)
i = 0;
}, 5000);
});
</script>
</head>
<body>
<div id="slideit" style="width:700px;height:391px;">
</div>
</body>
</html>
If it doesn't have to be background-image, you can place all the images in your #wrapper, in <img>, it will work like a charm:
<div id="wrapper">
<img src="firstImage" class="imageClass"></img>
<img src="secoundImage" class="imageClass"></img>
<img src="thirdImage" class="imageClass"></img>
</div>
then some style. Every image has to be in same spot, so add position relative to #wrapper, and position absolute to .imageClass:
#wrapper{
position: relative;
}
.imageClass{
position: absolute;
top: 0;
left: 0;
display: none;
}
display: none; will hide every image.
Now some JQuery. To appear first image when window load write this:
$(window).load(function() {
$('.imageClass').eq(0).show();
});
by the .eq() "command" you can specify which one element with class '.imageClass' you want to use exactly. Starts with 0. After that just do something like that:
function changeBackground() {
var current = 0;
//tells which image is currently shown
if(current<$('.imageClass').length){
//loop that will show first image again after it will show the last one
$('.imageClass').eq(current).fadeOut(500);
current++;
$('.imageClass').eq(current).fadeIn(500);
} else {
$('.imageClass').eq(current).fadeOut(500);
current=0;
$('.imageClass').eq(current).fadeIn(500);
}
}
changeBackground();
setInterval(changeBackground, 3000);
});
That should work, hope you will like it.
You may also use jQuery plugin backstretch.

Simple loop for images

I'm trying to build a simple image slider (but using a fade effect). Every two seconds, the image should change to another image. At the end, it should call repeat_sponsor() again, to start over, so it becomes a loop.
I've written this (highly ineffective) code for 5 images. Turns out I'm going to need it for around 50 images. My editor just freezes when I add too much code.
I've tried using while-loops, but I just can't figure it out how to do this the right way.
Anyone who can help me with this?
function repeat_sponsor()
{
$("#sponsor2").hide();
$("#sponsor3").hide();
$("#sponsor4").hide();
$("#sponsor5").fadeOut("slow");
$("#sponsor1").fadeIn("slow", function() {
setTimeout(function(){$("#sponsor2").fadeIn("slow", function() {
setTimeout(function(){$("#sponsor3").fadeIn("slow", function() {
setTimeout(function(){$("#sponsor4").fadeIn("slow", function() {
setTimeout(function(){$("#sponsor5").fadeIn("slow", ...
(function (){
var cnt = 50; //set to the last one...
var max=50;
function show() {
$("#sponsor" + cnt).fadeOut("slow"); //if you want the fadeout to be done before showing next, put the following code in the complete callback
cnt++;
if(cnt>max) {
cnt=1;
}
$("#sponsor" + cnt).fadeIn("slow");
window.setTimeout(show, 2000);
}
show();
})();
But the real issue is the fact you are loading tons of images from the start. You will be better off changing it so you only have a small subset of images and change the source.
You should use some sort of for loop and a class for hiding the images. and add a max value that if checks out resets c & i
var i=0;
var c=1;
function repeat_sponsor()
{
$("#sponsor"+i).fadeOut("slow");
$(".sponsers").hide()
$("#sponsor"+c).fadeIn("slow", function() {
window.setTimeout(repeat_sponsor(), 3000);
}
i++;
c++;
}
Just run a function every two seconds with setInterval and appropriately target your different sponsor divs:
var i = 1;
var max = 50;
setInterval(function() {
// Could target all other sponsor images with a class "sponsor"
$('.sponsor').fadeOut();
// Execute code on the target
$("#sponsor" + i).fadeIn();
if (i === max) {
i = 0;
}
i++;
}, 2000);

Creating Image slider using only jQuery

I'm trying to create an image slider using Jquery.
What I have is a main div with 3 sub divs with images.
Take a look at this fiddle. FIDDLE
Ok now i got the design just the way I want it. What is missing is the functionality.
When i hover over the div or the images, I want it to act like a clockwise slider.
This may look a bit confusing. Take a look at this demo. This is what i want.
DEMO
This is what i want.The right div gets filled with the middle image src , the middle div gets the left div src. The left div get an new src from an array of images i have defined. Currently i can only change one image div at a time.
However I don't want to use any more plugins. Only Jquery plugin. A CSS only solution would be the best but I do not think it will be possible.
JQUERY
$('.maindiv img').mouseover(function () {
var image = this;
loop = setInterval(function () {
if (i < images.length - 1) {
i++;
$(image).attr('src', images[i]);
} else {
i = 0;
$(image).attr('src', images[i]);
}
}, 1500);
EDIT: I managed to get one part of this working. CHECK THIS.Just need to add fade effect Now the problem is after the images in the array end the first images dont loop back... Had not thought of this before.Does Anybody know how i can get over this issue?
Mabye something like this:
jQuery(document).ready(function () {
var images = [];
var loop;
var i = 0;
images[0] = "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQ1GfA01TRDgrh-c5xWzrwSuiapiZ6b-yzDoS5JpmeVoB0ZCA87";
images[1] = "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQQSyUWiS4UUhdP1Xz81I_sFG6QNAyxN7KLGLI0-RjroNcZ5-HLiw";
images[2] = "https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcT_E_OgC6RiyFxKtw03NeWyelfRgJ3Ax3SnZZrufNkUe0nX3pjQ";
$('img', '.maindiv').mouseover(function () {
//Get divs inside main div and reverse them, so right is first
var divs = $($('div','.maindiv').get().reverse());
//Set up loop
loop = setInterval(function(){
divs.each(function(key, div){
if (divs[key+1])
{
//All divs gets image src from previous div > img
$('img', div).attr('src', $('img', $(divs[key+1])).attr('src'));
}
else
{
//This is left div
if (images && images[i])
{
//If picture url not in array then add it
if ($.inArray($('img', div).attr('src'), images) == -1)
{
images.push($('img', div).attr('src'));
}
$('img', div).attr('src', images[i]);
i++;
if (i>= images.length) i = 0;
}
}
});
}, 1500);
}).mouseout(function(){
clearInterval(loop);
});
});
Fiddle

jquery image fade animate() and multiple mouse events

Fairly new to JavaScript and very new to jQuery. Can someone have a look at the following code and see where I am going wrong.
This is the main part of the jQuery code:
$(document).on("hover", ".crrightcontainer img", function() { /* trigger event on hover on an img in class crrightcontainer */
var src = $(this).attr('src'); // get full path and filename from thumbnail
var index = src.lastIndexOf('/') + 1; // get index to last occurrenace of file path delimiter "/"
var fullsizeimgname = src.substr(index); // get actual filename only i.e. "cs1.jpg"
fullsizeimgname = "/painted/fp-images/" + fullsizeimgname; // add path to give full path to the full sized image.
$('.crleftcontainer img').animate({opacity: 0.0},1000); // fade out old full size image
$('.crleftcontainer img').attr("src",fullsizeimgname).animate({opacity: 1.0},1000); // set full size image in browser and fade in
});
http://jsfiddle.net/deanflyer/CfxyJ/1
It works, it just seems to fire off multiple mouse events. Just move the mouse a few times over the thumbnail images and youll see what I mean, giving multiple fades.
I've tried using .stop() on the main image with animate() but this just stops everything.
Many Thanks.
Is something like this your requirement try this: http://jsfiddle.net/CfxyJ/13/
$('.crrightcontainer img').css('opacity', 0.7);
$('.crrightcontainer img').mouseenter(function () {
$(this).stop().animate({opacity: 1.0}, 600);
var src = $(this).attr('src');
var index = src.lastIndexOf('/') + 1;
var fullsizeimgname = src.substr(index);
fullsizeimgname = "http://thepaintedtree.co.uk/fp-images/" + fullsizeimgname;
$('.crleftcontainer img').fadeOut('slow', function(){
$('.crleftcontainer img').attr("src", fullsizeimgname).fadeIn('slow');
});
});
$('.crrightcontainer img').mouseleave(function () { //fadeout
$(this).stop().animate({
opacity: 0.7
}, 600);
});
Try using mouseenter event. See updated fiddle http://jsfiddle.net/CfxyJ/25/. Is it what you are looking for?

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