What are the differences between using .first() and .eq(0)? [duplicate]

Question

What are the difference between using these 2 methods for retrieving the first element in a collection?

Answer 1

Taken from the live source code of jQuery 1.7.1:

,first:function(){return this.eq(0)},last:function(){return this.eq(-1)}

So as you suspected .first() is just a wrapper calling .eq().

Conclusion: no difference whatsoever. :)