description

# sqAttribute constant Null safety

HtmlEscapeMode const sqAttribute

Escaping mode for text going into single-quoted HTML attribute values.

The result should not be used as the content of an unquoted or double-quoted attribute value.

Escapes single quotes (`'`) but not double quotes (`"`), and escapes `<` and `>` characters because they are not allowed in strict XHTML attributes

## Implementation

    static const HtmlEscapeMode sqAttribute =
        HtmlEscapeMode._('attribute', true, false, true, false)