@Mykle1 I have given it up… Since i need few features ,i just decide to use VB to programe a desktop version.

Uncaught refernce error inclock js
Failed to load resource :the server responded with a status of 404

and NO helper founders for modules

RaspberryPi 3b, installing with the script on Github . Node version: 7.10.1 npm version :4.2.0

When I use npm:start .Nothing happened.No error ,but black screen. I use dev mod to check the web page,find mistakes and errors in js. I tried a lot of ways .
!