selector-attribute-quotes

Require or disallow quotes for attribute values.

a[target="_blank"] { }
/**      ↑      ↑
 * These quotes */

Options

string: "always"|"never"

Attribute values must always be quoted.

The following patterns are considered warnings:

a[title=flower] { }

[class^=top] { }

The following patterns are not considered warnings:

[title] { }

a[target="_blank"] { }

[class|="top"] { }

[title~='text'] { }

[data-attribute='component'] { }

Attribute values must never be quoted.

The following patterns are considered warnings:

a[target="_blank"] { }

[class|="top"] { }

[title~='text'] { }

[data-attribute='component'] { }

The following patterns are not considered warnings:

[title] { }

[title=flower] { }

[class^=top] { }