Is
$(this).attr('id') the same as:
this.id 3 Answers
No, they're not exactly the same.
They'll both return the element's ID, but if the element has no ID, then this.id will return a blank string while $(this).attr("id") will return undefined.
Almost (see Jeff's answer).
jQuery abstracts away attribute getting, but it isn't always the most terse option.
It is however shorter than getAttribute('id').
Same result, but this.id is much faster as it doesn't require all the jQuery stuff around it. You will also get different results if that item doesn't have an id.
