Set and add prop

  await websites.set('urls', ['http://nodejs.com'])
  // or
  await websites.props.urls.set(['http://nodejs.com'])
  
  // Insert
  await websites.props.urls.add('http://npmjs.com')

Now let’s modify and insert new items to the urls property. Using set will override the value, while user add will enter new values into the array. Add can only be run from props.

At this point the value of the urls property should be this:

['http://nodejs.com', 'http://npmjs.com']

Next: Sync props