More Examples of jQuery Selectors

$("*") : Selects all elements
$(this) : Selects the current HTML element
$("p.intro") : Selects all <p> elements with class="intro"
$("p:first") : Selects the first <p> element
$("ul li:first") : Selects the first <li> element of the first <ul>
$("ul li:first-child") : Selects the first <li> element of every <ul>
$("[href]") : Selects all elements with an href attribute
$("a[target='_blank']") : Selects all <a> elements with a target attribute value equal to "_blank"
$("a[target!='_blank']") : Selects all <a> elements with a target attribute value NOT equal to "_blank"
$(":button") : Selects all <button> elements and <input> elements of type="button"
$("tr:even") : Selects all even <tr> elements
$("tr:odd") : Selects all odd <tr> elements