Fade in table background image

**ADVaughn** · 08-25-2012 09:02 AM

I am trying to get the folowing background image to have a slight fade-in;

<table width="832" border="0" cellpadding="0" cellspacing="0" background="image02.jpg">

I have tried various JS samples I have found online but with no success. Seems like this would be an easy thing to do.

**George88** · 08-25-2012 02:45 PM

Do you want this to fade in on page load or at a certain time or after a specific event?

You might want to try something along the lines of:

Code:

<!DOCTYPE html>

<style type="text/css">

#test{ background-image: url(someimage.png); opacity: 0;}

</style>

<div id="test" />

<script type="text/javascript">

window.addEventListener("load", fade, false);

// Calls on load.
function fade()
{
    var opacity = document.getElementById("test").style.opacity;
    var fade_in = 0;

    // Calls an interval every 100 ms.
    fade_in = setInterval(function()
    {
        if(opacity == "" || opacity == "undefined" || opacity == "null")
        {
            // You may have issues incrementing opacity this way. Not sure.
            document.getElementById("test").style.opacity += 0.1;

            if(opacity >= 1.0)
            {
                clearInterval(fade_in);
                return false;
            }
        }            
    }, 100);
}

</script>

This is not tested code so you might have bugs, but this is how I would go about writing a fade function. If you have some code you can post that you'd prefer to use then feel free to show it. This gives me an idea for a tutorial actually, thanks for the idea!

**George88** · 08-25-2012 03:22 PM

Thanks for the inspiration. Here's some working code. For the sake of demonstration, I've used this image: http://www.uaegroup.net/uploads/ajax.jpg

Here's my code, tested in the top 5 browsers with no bugs or console errors.

Code:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

<style type="text/css">

#fade_this
{
	background-image: url(someimage.jpg);
	background-repeat: no-repeat;
	height: 236px;
	width: 474px;
	opacity: 0;
}

</style>

</head>

<body>

<div id="fade_this"></div>

</body>
</html>

<script type="text/javascript">

window.addEventListener("load", fade, false);

function fade()
{
	var opacity = document.getElementById("fade_this").style.opacity;
	var fade_in = 0;

	if(typeof fade.counter == "undefined")
		fade.counter = 0;
	
	fade_in = setInterval
	(
		function()
		{
			// You can adjust this to suit your needs.
			fade.counter += 0.2;
			
			document.getElementById("fade_this").style.opacity = fade.counter;
			
			if(document.getElementById("fade_this").style.opacity >= 1)
			{
				clearInterval(fade_in);
				return false;	
			}
			
		}, 50 // 50ms per interval. Changing this speeds up/slows down fade.
	);
}

</script>

**ADVaughn** · 08-25-2012 03:31 PM

Thanks I will try it out.

**George88** · 08-25-2012 03:51 PM

If you're having trouble, here's my working demo and tutorial explanation:

Demo: http://www.sitesupplier.co.uk/tutorial_demos/fade/

Simple tutorial: http://www.sitesupplier.co.uk/index....ith-javascript

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