SASS | Selector Functions Last Updated : 11 May, 2020 Comments Improve Suggest changes Like Article Like Report The selector functions help in checking and changing the CSS selectors in the style-sheet. All of the functions except selector-nest() prevents the use of the parent selector. selector-nest($selectors...): This method returns a new selector containing a nested list of CSS selectors based on the list given. Example: CSS selector-nest(".warning", "alert", "div") Output: .warning div, alert div selector-parse($selector): This method returns a list of strings contained in "selector" using the same format as the parent selector. Example: CSS selector-parse("h1 .myInput .warning") Output: ('h1' '.myInput' '.warning') selector-unify($selector1, $selector2): This method returns a new selector that matches only elements matched by both selector1 and selector2. Example 1: CSS selector-unify("myInput", ".disabled") Output: myInput.disabled Example 2: CSS selector-unify("p", "h1") Output: NULL simple-selectors($selector): This method returns a list of the individual selectors present in "selector", which should be a compound selector. Example: CSS simple-selectors("div.myInput") Output: div, .myInput is-superselector($super, $sub): This method returns a Boolean value telling whether the selector given in "super" matches all the elements given in "sub". Example 1: CSS is-superselector("div", "div.myInput") Output: true Example 2: CSS is-superselector("div.myInput", "div") Output: false selector-replace($selector, $original, $replacement): This method returns a new selector with the selector given in "replacement" in place of selector given in "original". Example: CSS selector-replace("p.hello", "p", "q") Output: q.hello selector-append($selectors): This method returns a new selector with the second and next selectors appended to the first without any spaces. Example 1: CSS selector-append("div", ".myInput") Output: div.myInput Example 2: CSS selector-append(".warning", "__a") Output: warning__a selector-extend($selector, $extendee, $extender): This method extends the $selector as @extend rule. It returns a copy of $selector modified with the following @extend rule: #{$extender} { @extend #{$extendee}; } Comment More infoAdvertise with us S Slash_IT Follow Improve Article Tags : Web Technologies CSS SASS Similar Reads CSS Tutorial CSS stands for Cascading Style Sheets. It is a stylesheet language used to style and enhance website presentation. 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