How do I fonts as the button text?

[prsh11]

Here my eww config:

defpoll monthday :interval "10s"
  "date '+%d'")
(defpoll month :interval "10s"
  "date '+%b'")

(defpoll songname :interval "10s"
  "playerctl metadata --format '{{title}}'")

(defwidget song []
  (box :orientation "v"
    (box :class "songname"
           songname)
           
    (box 
      (button :onclick "playerctl previous" )
      ))
      
)

          

(defwidget date []
 (box
  (label  :class "monthday"
          :text monthday)

          (label :class "monthname"
                 :text month
                 :valign "start"))
)


(defwindow date 
	:geometry (geometry :x "20"
                      :y "30"
                      :width "200"
                      :height "150"
                      :anchor "top left")
  :reserve (struts :side "top" :distance "4%")
  (date))

(defwindow musicplayer 
	:geometry (geometry :x "20"
                      :y "200"
                      :width "200"
                      :height "150"
                      :anchor "top left")
  :reserve (struts :side "top" :distance "4%")
  (song))

When I use special character in fonts, I get this error:

error: Invalid token
   ┌─ /home/prash/.config/eww/eww.yuck:15:45
   │
15 │       (button :onclick "playerctl previous" )
   │                                             ─ Invalid token

[VuiMuich]

The error means you are missing a second string as the label for the button. To set the font (and other style properties) use :class "style-tag" in the box around the button or the bottom itself (though not 100% sure if this one is correct, too).

[Paladin1991]

You must do according to this example.
(button :onclick "The program you want to open &"
:class "name"
(label :text "Text or iconic font"
:halign "start"))

[Animeshz]

The strings must be wrapped in braces, don't they? Without braces, it is expected to be a variable in s-expr implementation.