How to auto like facebook page from other site?

On the facebook page,we can click the like button to like the 开发者_Python百科page. How can we use any api or plugin to realize from other site?

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You can not automatically like an object for a user nor can you present like via the APIs. This prevents anyone "secretly" having users like pages / objects.

The solution is to embed a like button to your page and give users a clear reason to use it [sell the benefit of liking your page]. You can run a separate version for individual pages, objects or just an aggregate button for all of your site via the data-href element.

http://developers.facebook.com/docs/reference/plugins/like/

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You can check if a user has liked your page using:

FB.api('/me/likes', function(response) {
  console.log(response);
});

Loop through the response and look for your page ID.

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The open-graph api has now been updated to support creating (and deleting) likes. See here: https://developers.facebook.com/docs/opengraph/actions/builtin/likes/