What does @if do in SCSS?

Frontend ToolsJunior~1 min read

@if in SCSS is a conditional branching directive that lets you execute different blocks of code depending on a given condition. It resembles a conditional operator in programming languages and is applied inside the preprocessor before compilation, affecting which styles end up in the final CSS.

Example

scss

$theme: dark;

@if $theme == dark {
  body {
    background: #111;
    color: #fff;
  }
} @else {
  body {
    background: #fff;
    color: #111;
  }
}

Only one variant makes it into the final CSS: the one whose block passed the condition.

Where this is useful

Dark/light theme
Generating different grids for different parameters
Creating responsive styles for project configurations
Optimizing the final CSS by excluding unneeded code

The key meaning of `@if`

It lets you add simple logic to SCSS, making styles more dynamic and manageable, without duplicating identical blocks.

Ready to keep going in this same format. Let me know when you ask the next question.

Short Answer

Interview ready

Premium

A concise answer to help you respond confidently on this topic during an interview.

What does @if do in SCSS?

#Example

#Where this is useful

#The key meaning of @if

Short Answer

Example

Where this is useful

The key meaning of `@if`