->exists() function which returns boolean if element exists

[mitar]

[mitar]

I implemented one:

func PagserExists(node *goquery.Selection, args ...string) (out interface{}, err error) {
	return node.Length() > 0, nil
}

p.RegisterFunc("exists", PagserExists)

I think it could be added to core functions.

[foolin]

Which usages need to use this method?

[mitar]

I use it like this:

type data struct {
	DialogExists bool `pagser:"#dialog->exists()"`
}

Ideally it would not be needed and the following would just work:

type data struct {
	DialogExists bool `pagser:"#dialog"`
}

But it fails.