jquery - Filter element stored in variable by class -


I have elements stored in a variable (var body). Take the form of these elements: 

  & lt; p class = 'txt' & gt; & Lt; / P & gt; Or & lt; p class = 'img' & gt; & Lt; / P & gt;   
 I will have to pass like a 'body' in a function and only return that element if its class is 'IMG'.  
  
 
 
 If I correctly understand:  
  $ (body ) .hasClass ('img');   
 Or maybe:  
  $ (body) .filter ('. Img');

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