Google Plus One is also great for websites and webmasters because the more plus ones on a page, the higher that page may appear in a Google result (probably). I don't know that for 100% fact, but it seems that since they are next to every result on Google now, Plus Ones may soon be affecting PR.
Google +1 is the copy of like button from Facebook ??
1). Login from google.
2). Open the link "http://www.google.com/+1/button/"
3). Click on "Get The Code"
4). And get the code according to your need means which type of code you want like;