wp_enqueue_script and login_head

[Otto]

It's because it's using the blur() event when it should be using the change() event.

http://docs.jquery.com/Events/change#fn

Binds a function to the change event of each matched element.
The change event fires when a control loses the input focus and its value has been modified since gaining focus.

[itsananderson]

It's still possible that that's the intended functionality, which is why I asked whether it was a bug or a feature. The change() event would indeed be the correct thing to use if the gravatar is only to be updated when the email is changed. It could be that it's working correctly though. For example, if I change my gravatar while registering, I could simply focus/blur the email field to update.

[epicalex]

I decided to use the blur() event and not change(), because in my testing, if I used change(), there was one situation where the gravatar wouldn't update. If your browser stores previously entered values for similar fields such as email, as chrome does in a drop down list, and you choose one of those after typing a few characters then click out of the field, no update occurs.

However, I agree that change() is certainly better in terms of how the effect looks. So maybe there's a workaround. I'll have to have a think!

@itsananderson -

For example, if I change my gravatar while registering, I could simply focus/blur the email field to update.

- TBH, I'd never thought about that, but I'd suggest that that situation probably doesn't occur all too often!

@Otto - Glad you like it! So is it worth releasing?

[epicalex]

Well, I went ahead and released it. I know it still might be a little buggy, but the more users testing the better. http://epicalex.com/gravajax-registration/

Thanks again all for your help, and please continue to send feedback!