How can I write a eww buffer wash function

[Feng Shu]

Hi:

I write a function like this:

#+begin_comment
(defun eh-open-eww ()
(eww "www.google.com")
(switch-to-buffer "*eww*")
(eh-gnus-eww-buffer-wash))
#+end_comment

but it doesn't work and I need to delay run `eh-gnus-eww-buffer-wash'
I temp hack like this:

#+begin_comment
(defun eh-open-eww ()
(eww "www.google.com")
(switch-to-buffer "*eww*")
(run-at-time 2 nil 'eh-gnus-eww-buffer-wash)
(run-at-time 4 nil 'eh-gnus-eww-buffer-wash)
(run-at-time 6 nil 'eh-gnus-eww-buffer-wash))
#+end_comment

How to solve this problem?

Thanks!