AMD module that loads an image. Caches images.

load-image.js

/*global define*/
/*
AMD module that loads an image. Caches images.
Note: this code has not been tested extensively. Use with caution.
MIT License
*/
define(
	function ()
	{
		var images = { };
		
		function loadImage ( image_url, callback )
		{
			if ( typeof callback === 'function' )
			{
				image_url = image_url.replace( /"/gi, '' );

				if ( images[image_url] )
				{
					callback( images[image_url], image_url );
				}

				else
				{
					var image = new Image();
					image.addEventListener( 'load', function () { imageLoaded( image, image_url, callback ); } );
					image.src = image_url;
				}
			}
		}

		function imageLoaded ( image, image_url, callback )
		{
			images[image_url] = image;
			callback( image, image_url );
		}

		return loadImage;
	}
);