What is variable interpolation in Sass? Provide some examples.

Variable interpolation in Sass allows you to dynamically include the value of a variable within a string. It enables you to create dynamic selectors, class names, property names, or other strings by embedding variable values within them. Variable interpolation is denoted by the #{} syntax.

Here are a few examples to illustrate variable interpolation in Sass:

  1. Dynamic Selector:
$color: "blue";
$selector: "button";

.#{$selector} {
  color: $color;

In this example, the value of the $selector variable is dynamically interpolated within the class selector, resulting in .button. The final CSS will target elements with the class .button and apply the color specified by the $color variable.

  1. Dynamic Property Name:
$property: "font-size";
$size: 16px;

.my-element {
  #{$property}: $size;

Here, the $property variable is interpolated within the CSS rule, resulting in font-size: 16px;. The dynamic property name allows you to set properties based on variable values, enabling flexible and reusable code.

  1. Dynamic Class Name:
$color: "red";
$class: "highlight";

.#{$class} {
  background-color: $color;
  1. The value of $class is interpolated within the class selector, resulting in .highlight. The background color specified by the $color variable will be applied to elements with the class .highlight.

Variable interpolation in Sass provides a powerful way to generate dynamic styles and class names based on variable values. It enhances code reusability, flexibility, and makes it easier to maintain consistent styles throughout a project.

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