Just trying to crate a simple comment form on a blog. I want to load the user's gravatar (using jQuery) when he/she writes this in the email box.
How can I do that?
The gravatar url looks like this:
http://www.gravatar.com/avatar/<md5hashofemail>
Here are the rest of the options for the URL.
So all you're going to have to do is include a function called md5 that returns the md5 hash of the user's email. There are many online that do this, but I believe https://github.com/blueimp/JavaScript-MD5/blob/master/README.md works well. After that, just do:
// get the email
var email = $('#email').val();
// -- maybe validate the email?
// create a new image with the src pointing to the user's gravatar
var gravatar = $('<img>').attr({src: 'http://www.gravatar.com/avatar/' + md5(email)});
// append this new image to some div, or whatever
$('#my_whatever').append(gravatar);
// OR, simply modify the source of an image already on the page
$('#image').attr('src', 'http://www.gravatar.com/avatar/' + md5(email));
I thought this was obvious, but I will add it for posterity's sake:
If user emails are private and you're showing this ala-stackoverflow in a listing, you are probably better off encoding the email on the server so that user emails are not publicly visible if you look at the source.