Understanding the different uses of the load method with jquery

Understanding the different uses of the load method with jquery

What are the biggest differences or benefits between the ways that the load method are used below....

I've seen some people do this...
  1. $('#wrapper').append($("<div>").load(mfooterwrapper));
 While I've seen other peoeple use this style... 
   
  1. $("<div>").load(mfooterwrapper, function() {
  2. $("#wrapper").append($(this));
  3. });

Thanks for any advice!

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