jsoup the rule of selector

Selector syntaxA selector is a chain of simple selectors, seperated by combinators. Selectors are case insensitive (including against elements, attributes, and attribute values).

The universal selector (*) is implicit when no element selector is supplied (i.e. *.header and .header is equivalent). div:not(.logo) finds all divs that do not have the "logo" class

*	any element	*
tag	elements with the given tag name	div
ns|E	elements of type E in the namespace ns	fb|name finds elements
#id	elements with attribute ID of "id"	div#wrap, #logo
.class	elements with a class name of "class"	div.left, .result
[attr]	elements with an attribute named "attr" (with any value)	a[href], [title]
[^attrPrefix]	elements with an attribute name starting with "attrPrefix". Use to find elements with HTML5 datasets	[^data-], div[^data-]
[attr=val]	elements with an attribute named "attr", and value equal to "val"	img[width=500], a[rel=nofollow]
[attr^=valPrefix]	elements with an attribute named "attr", and value starting with "valPrefix"	a[href^=http:]
[attr$=valSuffix]	elements with an attribute named "attr", and value ending with "valSuffix"	img[src$=.png]
[attr*=valContaining]	elements with an attribute named "attr", and value containing "valContaining"	a[href*=/search/]
[attr~=regex]	elements with an attribute named "attr", and value matching the regular expression	img[src~=(?i)\\.(png|jpe?g)]
	The above may be combined in any order	div.header[title]
	Combinators
E F	an F element descended from an E element	div a, .logo h1
E > F	an F direct child of E	ol > li
E + F	an F element immediately preceded by sibling E	li + li, div.head + div
E ~ F	an F element preceded by sibling E	h1 ~ p
E, F, G	all matching elements E, F, or G	a[href], div, h3
	Pseudo selectors
:lt(n)	elements whose sibling index is less than n	td:lt(3) finds the first 2 cells of each row
:gt(n)	elements whose sibling index is greater than n	td:gt(1) finds cells after skipping the first two
:eq(n)	elements whose sibling index is equal to n	td:eq(0) finds the first cell of each row
:has(selector)	elements that contains at least one element matching theselector	div:has(p) finds divs that contain p elements
:not(selector)	elements that do not match the selector. See alsoElements.not(String)
:contains(text)	elements that contains the specified text. The search is case insensitive. The text may appear in the found element, or any of its descendants.	p:contains(jsoup) finds p elements containing the text "jsoup".
:matches(regex)	elements whose text matches the specified regular expression. The text may appear in the found element, or any of its descendants.	td:matches(\\d+) finds table cells containing digits. div:matches((?i)login) finds divs containing the text, case insensitively.
:containsOwn(text)	elements that directly contains the specified text. The search is case insensitive. The text must appear in the found element, not any of its descendants.	p:containsOwn(jsoup) finds p elements with own text "jsoup".
:matchesOwn(regex)	elements whose own text matches the specified regular expression. The text must appear in the found element, not any of its descendants.	td:matchesOwn(\\d+) finds table cells directly containing digits. div:matchesOwn((?i)login) finds divs containing the text, case insensitively.
	The above may be combined in any order and with other selectors	.light:contains(name):eq(0)