Jquery factory function

the $() function remove the need to do a for loop to acces a group of lelement since whatever we put nside the parenthese will be looped through automatically end store as a jQuery objec,we cn put just about anything inside the parenthese of the $(),here are few examples

A tag name: $('p') gets all paragraphs in the document.

An ID: $('#some-id') gets the single element in the document that has the

corresponding some-id ID.

A class: $('.some-class') gets all elements in the document that have a

class of some-class.

In jQuery, the dollar sign $ is simply shorthand for jQuery