Replacing images with time intervals using jquery
From today onwards i will be posting the jquery tutoials also, This post will show you how to replace one image with another one in specific time intervals. For example: replacing image1.jpg withimage2.jpg every 5 seconds.
Guys if you are not aware of jquey and its feature.Dont worry i will be adding tutoials based on HOW TO APPROACH JQUERY in the upcoming post.So do visit my site regularly for updates.
In javascript, setInterval() function is used.
So, before we continue, we need to define where our images are coming from. Images URLs can be stored in javascript array or we could choose more elegant way and simply read them from HTML document.
Imagine we have this HTML markup:
<div id="myGallery"> <img src="image1.jpg" class="active" /> <img src="image2.jpg" /> <img src="image3.jpg" /> </div>
We need to hide all images but class="active" one and overlay all of them on one another. Here is a CSS to do that:
#myGallery{ position:relative; width:400px; /* Set your image width */ height:300px; /* Set your image height */ } #myGallery img{ display:none; position:absolute; top:0; left:0; } #myGallery img.active{ display:block; }
Now, lets write jQuery function that will fade out currently active image and fade in the next image. Here is jQuery code:
function swapImages(){ var $active = $('#myGallery .active'); var $next = ($('#myGallery .active').next().length > 0) ? $('#myGallery .active').next() : $('#myGallery img:first'); $active.fadeOut(function(){ $active.removeClass('active'); $next.fadeIn().addClass('active'); }); }
And now all that’s left is to add setInterval() with our function and the time interval we want our image to fade out and fade in.
// Run our swapImages() function every 5secs setInterval('swapImages()', 5000);
Now we have gallery/slideshow with images changing every 5 seconds. You can easily customize this jQuery script to create your own slideshow.
Here is how your final code should look like:
<html> <head> <script src="jquery.js"></script> <script> function swapImages(){ var $active = $('#myGallery .active'); var $next = ($('#myGallery .active').next().length > 0) ? $('#myGallery .active').next() : $('#myGallery img:first'); $active.fadeOut(function(){ $active.removeClass('active'); $next.fadeIn().addClass('active'); }); } $(document).ready(function(){ // Run our swapImages() function every 5secs setInterval('swapImages()', 5000); } </script> <style> #myGallery{ position:relative; width:400px; /* Set your image width */ height:300px; /* Set your image height */ } #myGallery img{ display:none; position:absolute; top:0; left:0; } #myGallery img.active{ display:block; } </style> </head> <body> <div id="myGallery"> <img src="image1.jpg" class="active" /> <img src="image2.jpg" /> <img src="image3.jpg" /> </div> </body> </html>
Thanks to jquery-howto
Related posts:
the code you had was throwing an error in firebug but the following code works
function swapImages(){
var $active = $(’#myGallery .active’);
var $next = ($(’#myGallery .active’).next().length > 0) ? $(’#myGallery .active’).next() : $(’#myGallery img:first’);
$active.fadeOut(function(){
$active.removeClass(’active’);
$next.fadeIn().addClass(’active’);
});
}
$(document).ready(function(){
setInterval(’swapImages()’, 5000);
});
Thanks Bret Bouchard, appreciate your effort :), keep visiting my website