Jyxo\HtmlTag::isRequiredAttr PHP Method

    private function isRequiredAttr(string $tag, string $attr) : bool
    {
        if (isset($this->requiredAttrs[$tag])) {
            if (is_array($this->requiredAttrs[$tag])) {
                return in_array($attr, $this->requiredAttrs[$tag]);
            }
            return $attr == $this->requiredAttrs[$tag];
        }
        return false;
    }