I have added the following code to my init file. But I still get the error.
(org-babel-do-load-languages
'org-babel-load-languages
'((js . t)))
I noticed in Babel supported Languages, it says javascript requires node.js. So I download node.js and added the folder to my Environment PATH. However, I got the same error.
So how could I run javascript in org-babel?
Thanks for @manandearth's link, I partly sovle this question:
Reason why I got the prompt is that I wrote the wrong src block identifier in my case.
Since I write (js . t), so it should like
#+BEGIN_SRC js
console.log("hello world");
#+END_SRC
Not
#+BEGIN_SRC javascript
console.log("hello world");
#+END_SRC
Possible identifiers can be found at https://orgmode.org/org.html#Languages and https://orgmode.org/worg/org-contrib/babel/languages.html.