$ . fn . pressEnter =  function ( fn )  {         return  this . each ( function ()  {            $ ( this ). bind ( 'enterPress' ,  fn );          $ ( this ). keyup ( function ( e ){              if ( e . keyCode ==  13 )              {                $ ( this ). trigger ( "enterPress" );              }          })      });     };    //use it:  $ ( 'textarea' ). pressEnter ( function (){ alert ( 'here' )})         Ref : http://stackoverflow.com/questions/6524288/jquery-event-for-user-pressing-enter-in-a-textbox