How grunt watch files in sub folders?

Question

My codes folders and files like this, you never know how many sub folders in it:

js/sub1/a.js
js/sub2/b.js
js/sub3/sub31/c.js
js/sub4/sub41/sub411/d.js


        

Answer 1

Per the official documentation on file globbing, to watch for changes for files of a certain file type in the directory path and its subdirectories, you'll want:

files: ['js/**/*.js']