How to set the default mode of file in Spacemacs?

Question

Every time I open a .js file with Spacemacs, the default mode is web-mode. But what I want is react-mode.

Is there any way to achieve this ? Thanks.

Answer 1

I found some information from #4751.

We can simply add (add-to-list 'auto-mode-alist '("\\.js\\'" . react-mode)) to docspacemacs/user-config in .spacemacs.