Facebook share prompt?

Hi Guys,

I’ve been looking all over and could not find an answer. I would like to know how can I add Facebook Share prompt after entry submission onto my wordpress website? I take people have to login with facebook in the first place?

What I have is I will have form submission that id like to have a pop up of Share your post (like you have it on facebook) after they click submit. I have seen it done before, but for life of me I could not find out how.

Any help would be really appreciated.

Thank you!

P.S. I posted it originally on .com forum, but got told I should be posting it here since I am hosting my own site….