https://stackoverflow.com/questions/1049112/what-is-the-meaning-of-symbol-in-jquery
By default, jQuery uses „$“ as a shortcut for „jQuery“
So, using $(„#id“) or jQuery(„#id“) is the same.
You can use „$“ as a function name in JavaScript. It is shorthand for jQuery(). Which you can use if you want. jQuery can be ran in compatibility mode if another library is using the $ already. Just use jQuery.noConflict(). $ is pretty commonly used as a selector function in JS.