Documentation only jsconsole (#17384)

Co-authored-by: Danil Yarantsev <tiberiumk12@gmail.com>
Co-authored-by: Timothee Cour <timothee.cour2@gmail.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/js/jsconsole.nim b/lib/js/jsconsole.nim
index 8b0bc2620..b8a361af1 100644
--- a/lib/js/jsconsole.nim
+++ b/lib/js/jsconsole.nim
@@ -9,6 +9,18 @@
 
 ## Wrapper for the `console` object for the `JavaScript backend
 ## <backends.html#backends-the-javascript-target>`_.
+##
+## Styled Messages
+## ===============
+##
+## CSS-styled messages in the browser are useful for debugging purposes.
+## To use them, prefix the message with one or more `%c`,
+## and provide the CSS style as the last argument.
+## The amount of `%c`'s must match the amount of CSS-styled strings.
+##
+runnableExamples("-r:off"):
+  console.log "%c My Debug Message", "color: red" # Notice the "%c"
+  console.log "%c My Debug %c Message", "color: red", "font-size: 2em"
 
 import std/private/since, std/private/miscdollars  # toLocation