Part of jQuery’s power is based on its ability to select particular sections of the page. This table includes several commonly used selectors and filters.

Selector/Filter Searches for…
$("element") Any HTML element.
$("#elementID") Any element with the given ID.
$(".className") Any element with the given class name.
:header Any header tag (h1, h2, h3, and so on).
:animated Any element that is currently being animated.
:contains(text) Any element that contains the indicated text.
:empty The element is empty.
:parent An element that contains some other element.
:attribute=value The element has an attribute with the specified value.
:Input, :text, :radio, :image, :button, etc Matches on the specific element type (especially useful for form elements that are all variations of the input tag).