update node.js demo from {@for} to {@each}.
update node.js demo from {@for} to {@each}.

heicx/Juicer,kujioon/Juicer,280455936/Juicer,kujioon/Juicer,dennisit/Juicer,PaulGuo/Juicer,PaulGuo/Juicer,dennisit/Juicer,280455936/Juicer