How to add fade effect or image transition using jQuery?

Question

I have only one item <img>on my page. I change the attribute of srcthis image every 7 seconds.

I see new images every 7 seconds, but it would be better if I could add a fade or transition effect when loading a new image.

Do some have a simple script for this?

I do not need a plugin. To do this, you need a little hint or a few lines.

Answer 1

, KaiQing, callbacks jQuery / . : http://www.jsfiddle.net/bradchristie/HsKpq/1/

$('img').fadeOut('slow',function(){
    $(this).attr('src','/path/to/new_image.png').fadeIn('slow');
});

Answer 2

:

<img id="backImg" />
<img id="frontImg" />

#backImg #frontImg :

#backImg
{
    position: absolute;
}

, 7 , fadeOut ... , . , src, :

function transitionImages(preloadImgUrl)
{
    $("#frontImg").fadeOut("slow", function()
    {
        $("#frontImg").attr("src", $("#backImg").attr("src")).show();
        $("#backImg").attr("src", preloadImgUrl);
    }
}

, . , css divs, .

Answer 3

.

:

    <div id="main_over"></div> 
    <div id="main_img"></div> 
    <div id="himg" style="display:none; clear:both; margin-top:40px;"> 

            <img id="si_15" src="http://website.com/media/uploaded/home_slideshow/53/dummy_image_large_1__large.jpg" alt="dummy_image_large_1" /> 

            <img id="si_16" src="http://website.com/media/uploaded/home_slideshow/53/dummy_image_large_2__large.jpg" alt="dummy_image_large_2" /> 

            <img id="si_17" src="http://website.com/media/uploaded/home_slideshow/53/dummy_image_large_3__large.jpg" alt="dummy_image_large_3" /> 

            <img id="si_18" src="http://website.com/media/uploaded/home_slideshow/53/dummy_image_large_4__large.jpg" alt="dummy_image_large_4" /> 

    </div> 
<style> 
#main_over{position:absolute; z-index:10; width:800px; height:600px; background:#fff; display:block;}
</style> 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> 
<script type="text/javascript"> 
$(document).ready(function(){
    var i = 0;
    $('#himg img').each(function(){
        if(i == 0)
        {
            $('#main_over').html('<img src="' + $(this).attr('src') + '" alt="" />');

        }
        if(i == 1)
        {
            $('#main_img').html('<img src="' + $(this).attr('src') + '" alt="" />');
        }
        i ++;

        slide.arr.push($(this).attr('src')); 
    });

    setTimeout(function(){
        if(slide.arr.length < 2)
            slide.fade(0);
        else
            slide.fade(2);
    }, 3000);
});

var slide = {
    arr: Array(),
    fade: function(i)
    {
        $('#main_over').fadeOut("medium");
        setTimeout(function(){slide.next(i);}, 1000);
    },
    next: function(i)
    {
        $('#main_over').html($('#main_img').html());
        $('#main_over').css('display', 'block');

        $('#main_img').html('<img src="' + slide.arr[i] + '" alt="" />');

        i++;
        if(i >= slide.arr.length)
            i = 0;

        setTimeout(function(){slide.fade(i);}, 3000);
    }
}

</script>