For the purpose of this question lets say we need to append()
1000 objects to the body
element.
You could go about it like this:
Since $.fn.append takes a variable number of elements we can use apply
to pass the array as arguments to it:
el.append.apply(el, myArray);
This works if you have an array of jQuery objects. According to the spec though you can append an array of elements if you have the DOM elements. If you have an array of html strings you can just .join('') them and append them all at once.