How to invite everyone to facebook events/groups/pages etc

Go to your event/group/page, click invite people and then paste this snippet in the URL field of your browser and hit Enter..

javascript:elms=document.getElementById('friends').getElementsByTagName('li');for(var fid in elms){if(typeof elms[fid] === 'object'){fs.click(elms[fid]);}}

 Your invitations will not be sent yet, but all your friends will be selected. Click the “Invite” or “Send” button on the Facebook page to finally send the invites