Is jquery's attr() asynchronous?

Question

Say I have a loop that on each iteration it appends a div with an img tag, then loads its src attribute using something like this:

$("img").last().attr('src', imageSource);

If I'm doing this for a few iterations for a few different images, am I getting an asynchronous loading of those images?

If not, how do I load images asynchronously by looping? I'll be happy to get some ajax tips.

Answer 1

attr is not asynchronous. It is a very simple operation that takes place effectively instantly.

However, the loading of the images from the server takes rather longer. That process is asynchronous: as soon as you set the attribute, you can forget about it and the browser will load the image for you in the background.

Loading images asynchronously isn't an option: it is in fact the only way that images are loaded.