javascript folding

.vimrc

@@ -644,6 +644,22 @@ if has("eval")
     noremap <Leader>ig :call MakeIncludeGuards()<CR>
 endif
 
+" javascript folding
+if has("eval")
+    function! JavaScriptFold()
+        setl foldmethod=syntax
+        setl foldlevelstart=1
+        syn region foldBraces start=/{/ end=/}/ transparent fold keepend extend
+
+        function! FoldText()
+            return substitute(getline(v:foldstart), '{.*', '{...}', '')
+        endfunction
+        setl foldtext=FoldText()
+    endfunction
+    au FileType javascript call JavaScriptFold()
+    au FileType javascript setl fen
+endif
+
 " fast buffer switching
 if v:version >= 700 && has("eval")
     let g:switch_header_map = {