What are boolean operators in Sass?

Sass is a widely used CSS preprocessor that offers several robust features for creating dynamic and efficient stylesheets. One such feature is the availability of boolean operators, which enable you to make choices based on the values of variables.

Boolean operators are used to compare values and return either true or false. Sass provides three boolean operators: and, or, and not.

The and operator returns true only if both values being compared are true. Here's an example:

$is-large: true;
$is-bold: true;

p {
  font-size: ($is-large == true) and (16px);
  font-weight: ($is-bold == true) and (bold);
}

In this example, the and operator is used to compare the values of the $is-large and $is-bold variables. If both variables are true, then the styles are applied to the p element.

The or operator returns true if either of the values being compared are true. Here's an example:

$is-large: true;
$is-bold: false;

p {
  font-size: ($is-large == true) or (14px);
  font-weight: ($is-bold == true) or (normal);
}

In this example, the or operator is used to compare the values of the $is-large and $is-bold variables. If either variable is true, then the styles are applied to the p element.

The not operator returns the opposite of the value being compared. Here's an example:

$is-large: true;

p {
  font-size: ($is-large != true) or (14px);
}

In this example, the not operator is used to compare the value of the $is-large variable. If the variable is not true, then the styles are applied to the p element.

In conclusion, boolean operators are a powerful feature of Sass that allow you to make decisions based on the values of variables. Whether you're working with content strings or dynamic variables, boolean operators can make your stylesheets more dynamic and maintainable. By understanding how to use boolean operators in Sass, you can write more efficient and flexible CSS preprocessor code for your web projects.