I am afraid not… although I have never used Floki, looking at the documentation it seems it uses CSS selectors to match elements. Thus, you could match any display: none with or without something in front of it by querying like so:
// html/javascript selector, but it is the same thing
document.querySelectorAll("[style*=\"display: none\"]")
This would match:
display: none
width: 100%, display: none
It will however not match display:none (without the space). CSS does not allow regular expression style selectors. But maybe you can combine differen Floki calls into one? Pure guess here but:
a = Floki.find(ast, "[style*=\"display: none\"]")
b = Floki.find(ast, "[style*=\"display:none\"]")
total = a ++ b