JQuery Tutorial for Beginners - 17 - Attribute methods

In this tutorial we look at the attribute methods.

[brocklesnarufcchamp]

How come there's a box remaing after you removed the image, it's not like you added any CSS to the image didn't you?

[Albinary]

Could you create a attribute without having it in the actual html?
e.g HTML: <h1>

JQUERY: $("h1").attr("id", "green");

[samyoung]

any tutorials on boostrap for beginners????