What is the benefit of wrapping a jquery function in a closure?

Question

Hi I\'ve been busy trying to take my knowledge of JQuery to the next level, So far I think I\'ve understood everything but as I\'ve ventured onto more advanced tutorials I\'

Answer 1

If you are writing a plugin, use

(function($) {
  //stuff that uses the jquery lib using $
})(jQuery);

This is equivalent to

var __myf = function($) {
  //stuff that uses the jquery lib using $
};
__myf(jQuery);

If you are writing page code, use

jQuery(function($) {
  //stuff that uses the jquery lib using $
});

Here, jQuery will invoke your function when it's ready to (when the document is loaded), and will pass itself as the first argument to your function.