Sass Selector

Introduction 

As time passes, the designs of web pages are becoming more complex, and sometimes there are repetitions in the designs used, but we have to write them again and again in the CSS file. So, how can one reduce these long and complex CSS codes?

The answer is by using Sass. It is an upgrade from CSS that helps programmers reduce the CSS file's complexity and length. 

In this blog, we will be learning about Sass selector functions.

Sass Selector Functions

Sass selector functions help in manipulating the CSS selectors in a stylesheet. 

Let’s have a look at all the sass selector functions:

• Selector-nest (selectors) - This function returns a new selector containing a nested list of CSS selectors based on the given list.
  
  Example:
   

selector-nest("ul", "li")
Result: ul li
selector-nest(".warning", "alert", "div")
Result: .warning div, alert div

• Selector- parse (selectors) - This function returns a list of strings contained in the selector using the same format as the parent selector.
  
  Example:
   

selector-parse("h3 .content .warning")
Result: ('h3' '.content' '.warning')

• Selector-unify (selector1, selector2) - This function returns a new selector that matches only elements matched by both selector1 and selector2.
  
  Example:
   

selector-unify("content", ".disabled")
Result: content.disabled

selector-unify("p", "h2")
Result: null

• Selector- replace (selector, original, replacement) - This function returns a new selector with the selectors present in replacement in place of selectors present in the original.
  
  Example:
   

selector-replace("p.warning", "p", "div")
Result: div.warning 

• Selector-append (selectors) - This function returns a new selector by appending the second (and next) selector to the first selector.
  
  Example:
   

selector-append("div", ".content")
Result: div.content

selector-append(".warning", "xyz")
Result: .warningxyz

• Selector-extend (selector, extendee, extender) - This functions extends the selector as @extend rule. It returns a copy of selector modified with the @extend rule.
  
  Example:
   

#{$extender} {
    @extend #{$extendee};
}

• Simple- Selector (selectors) - This function returns a list of the individual selectors contained in the selector, which must be a compound selector.
  
  Example:
   

simple-selectors("div.coding")
Result: div, .codingn

simple-selectors("div.coding:before")
Result: div, .coding, :before

• is-superselector (super, sub) - This function checks whether the super selector matches all the elements present in the sub by returning a boolean value.
  
  Example:
   

is-superselector("div", "div.myInput")
Result: true

is-superselector("div.myInput", "div")
Result: false

is-superselector("div", "div")
Result: true