The jQuery syntax is tailor dollar sign and parentheses for selecting HTML elements and performing action on the element(s).

Basic syntax is: $(selector).action()    A $ sign to define/access jQuery
   A (selector) to "query (or find)" HTML elements
   A jQuery action() to be performed on the element(s)

Examples:
$(this).hide() - hides the current element.

$("span").hide() - hides all elements.

$(".info").hide() - hides all elements with class="info".

$("#info").hide() - hides the element with id="info".