The jQuery syntax is tailor made for selecting HTML elements and perform some 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)

$(this).hide() - hides the current element.
$("p").hide() - hides all <p> elements.
$(".test").hide() - hides all elements with class="test".
$("#test").hide() - hides the element with id="test".

Are you familiar with CSS selectors?

jQuery uses CSS syntax to select elements.

The Document Ready Event
You might have noticed that all jQuery methods in our examples, are inside a document ready event:
$(document).ready(function(){ // jQuery methods go here... });