javascript indendation, some whitespace highlights

nvimrc

@@ -145,3 +145,7 @@ syn keyword cppExceptions noexcept
 
 " allow mouse clicks to change cursor position
 set noequalalways
+
+" list whitespaces and some other characters
+set listchars=tab:>-,trail:~
+set list

vim/after/ftplugin/javascript.vim

@@ -0,0 +1,3 @@
+setlocal shiftwidth=2
+setlocal tabstop=2
+setlocal softtabstop=2