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Updated Procedural cosmetic filters (markdown)

Raymond Hill 2016-12-27 11:40:23 -05:00
parent 43b64b42a4
commit bfd0ba813d
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Procedural-cosmetic-filters.md

@ -68,4 +68,4 @@ Same as `:matches-css(...)` except that the style will be looked-up for `:after`
- Examples:
- `facebook.com##:xpath(//div[@id="stream_pagelet"]//div[starts-with(@id,"hyperfeed_story_id_")][.//h6//span/text()="People You May Know"])`
The `:xpath(...)` operator is different than other operators. Whereas all other operators are used to filter down a resultset of elements, the `:xpath(...)` operator can be used bot to create a new resultset or filter down an existing one. For this reason, _subject_ is optional.
The `:xpath(...)` operator is different than other operators. Whereas all other operators are used to filter down a resultset of elements, the `:xpath(...)` operator can be used bot to create a new resultset or filter down an existing one. For this reason, _subject_ is optional. For example, an `:xpath(...)` operator could be use to create a new resultset consisting of all ancestors elements of a subject element, something not otherwise possible with either plain CSS selectors or other procedural operators.