Which of the following code samples is faster in generating HTML code using jQuery?

Sample 1:

var div = $("<div>");
$.each(data,function(count,item){
    var Elem = div.clone().addClass("message").html(item.Firstname);
    $(".container").append(Elem);
});

Sample 2:

$.each(data,function(count,item){
    var Elem = "<div class = 'Elem'>" + item.Firstname + "</div>";
    $(".container").append(Elem);
});