Gerillass: Is Number Sass Function

Is Number

Type: Function

isNumber();

Returns the value if it is a number.

Name	Type	Description
`$value`	value	Accepts any value.

Validating a numeric argument in a mixin of your own.

Sass

@mixin z($layer) {
  position: relative;
  z-index: isNumber($layer);
}
.modal {
  @include z(100);
}

CSS

.modal {
  position: relative;
  z-index: 100;
}