add facade

config/app.php

@@ -209,6 +209,7 @@
         'Gate' => Illuminate\Support\Facades\Gate::class,
         'Hash' => Illuminate\Support\Facades\Hash::class,
         'Http' => Illuminate\Support\Facades\Http::class,
+        'Js' => Illuminate\Support\Js::class,
         'Lang' => Illuminate\Support\Facades\Lang::class,
         'Log' => Illuminate\Support\Facades\Log::class,
         'Mail' => Illuminate\Support\Facades\Mail::class,