Class Selector

CSS-like element selector, that finds elements matching a query.

Inheritance

System.Object

Selector

Namespace: Supremes.Select

Assembly: Supremes.dll

Syntax

public class Selector : object

Remarks

Selector syntax

A selector is a chain of simple selectors, separated 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).

Pattern	Matches	Example
`*`	any element	`*`
`tag`	elements with the given tag name	`div`
`ns\|E`	elements of type E in the namespace ns	`fb\|name` finds `<fb:name>` 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="val"]`	elements with an attribute named "attr", and value equal to "val"	`span[hello="Cleveland"][goodbye="Columbus"]`, `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 the selector	`div:has(p)` finds divs that contain p elements
`:not(selector)`	elements that do not match the selector. See also Not(String)	`div:not(.logo)` finds all divs that do not have the "logo" class. `div:not(:has(div))` finds divs that do not contain divs.
`: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 contain 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)`
Structural pseudo selectors
`:root`	The element that is the root of the document. In HTML, this is the `html` element	`:root`
`:nth-child(an+b)`	elements that have `an+b-1` siblings before it in the document tree, for any positive integer or zero value of `n`, and has a parent element. For values of `a` and `b` greater than zero, this effectively divides the element's children into groups of a elements (the last group taking the remainder), and selecting the bth element of each group. For example, this allows the selectors to address every other row in a table, and could be used to alternate the color of paragraph text in a cycle of four. The `a` and `b` values must be integers (positive, negative, or zero). The index of the first child of an element is 1. In addition to this, `:nth-child()` can take `odd` and `even` as arguments instead. `odd` has the same signification as `2n+1`, and `even` has the same signification as `2n`.	`tr:nth-child(2n+1)` finds every odd row of a table. `:nth-child(10n-1)` the 9th, 19th, 29th, etc, element. `li:nth-child(5)` the 5h li
`:nth-last-child(an+b)`	elements that have `an+b-1` siblings after it in the document tree. Otherwise like `:nth-child()`	`tr:nth-last-child(-n+2)` the last two rows of a table
`:nth-of-type(an+b)`	pseudo-class notation represents an element that has `an+b-1` siblings with the same expanded element name before it in the document tree, for any zero or positive integer value of n, and has a parent element	`img:nth-of-type(2n+1)`
`:nth-last-of-type(an+b)`	pseudo-class notation represents an element that has `an+b-1` siblings with the same expanded element name after it in the document tree, for any zero or positive integer value of n, and has a parent element	`img:nth-last-of-type(2n+1)`
`:first-child`	elements that are the first child of some other element.	`div > p:first-child`
`:last-child`	elements that are the last child of some other element.	`ol > li:last-child`
`:first-of-type`	elements that are the first sibling of its type in the list of children of its parent element	`dl dt:first-of-type`
`:last-of-type`	elements that are the last sibling of its type in the list of children of its parent element	`tr > td:last-of-type`
`:only-child`	elements that have a parent element and whose parent element hasve no other element children
`:only-of-type`	an element that has a parent element and whose parent element has no other element children with the same expanded element name
`:empty`	elements that have no children at all

Methods

Select(String, IEnumerable<Element>)

Find elements matching selector.

Declaration

public static Elements Select(string query, IEnumerable<Element> roots)

Parameters

Type	Name	Description
System.String	query	CSS selector
IEnumerable<Element>	roots	root elements to descend into

Returns

Type	Description
Elements	matching elements, empty if not

Select(String, Element)

Find elements matching selector.

Declaration

public static Elements Select(string query, Element root)

Parameters

Type	Name	Description
System.String	query	CSS selector
Element	root	root element to descend into

Returns

Type	Description
Elements	matching elements, empty if not

Class Selector

Inheritance

Namespace: Supremes.Select

Assembly: Supremes.dll

Syntax

Remarks

Selector syntax

Combinators

Pseudo selectors

Structural pseudo selectors

Methods

Select(String, IEnumerable<Element>)

Declaration

Parameters

Returns

Select(String, Element)

Declaration

Parameters

Returns

See Also