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Updated Procedural cosmetic filters (markdown)

Raymond Hill 2016-12-27 11:18:12 -05:00
parent f9147ce049
commit 1d22de9bab
1 changed files with 5 additions and 1 deletions
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Procedural-cosmetic-filters.md

@ -35,4 +35,8 @@ The `:has(arg)` operator is actually a planned pseudo-class in CSS4, but as of w
- Examples:
- `mobile.twitter.com##main [role="region"] > [role="grid"] > [role="rowgroup"] [role="row"]:if(div:last-of-type span:has-text(/^Promoted by/))`
The purpose of `:if(...)` ressembles the purpose of the `:has(...)` operator, however the difference is that the argument for the `:has(...)` operator **can not** be anything else than a plain CSS selector. This limitation to the `:has(...)` operator is to ensure that they will be able to be implemented declaratively once a browser supports `:has(...)` as a valid CSS4 selector.
The purpose of `:if(...)` resembles the purpose of the `:has(...)` operator, however the difference is that the argument for the `:has(...)` operator **can not** be anything else than a plain CSS selector. This limitation to the `:has(...)` operator is to ensure that they will be able to be implemented declaratively once a browser supports `:has(...)` as a valid CSS4 selector.
### `subject:if-not(arg)`
Essentially the same as the `:if(...)` operator, except that the element _subject_ is selected if the result of evaluating _arg_ is zero elements.