set-open-graph

Setting Open Graph meta tags of the document.

Usage

import OpenGraph from 'set-open-graph'

// create an instance, set default properties
const openGraph = new OpenGraph({
  og: {
    site_name: 'Company Name',
    image: 'https://www.example.com/logo.png'
  }
})

openGraph.set({
  og: {
    title: 'Arrival of a Train at La Ciotat',
    description: 'L\'arrivée d\'un train en gare de La Ciotat is an 1895 French short black-and-white silent documentary film directed and produced by Auguste and Louis Lumière. Its first public showing took place in January 1896.',
    type: 'video.movie',
    locale: {
      current: 'en_US',
      alternate: [
        'zh_CN',
        'ja_JP'
      ]
    },
    url: 'http://examples.opengraphprotocol.us/video-movie.html',
    image: [
      {
        url: 'http://examples.opengraphprotocol.us/media/images/train.jpg',
        secure_url: 'https://d72cgtgi6hvvl.cloudfront.net/media/images/train.jpg',
        width: '500',
        height: '328',
        type: 'image/jpeg'
      },
      {
        url: 'http://examples.opengraphprotocol.us/media/images/75.png',
        secure_url: 'https://d72cgtgi6hvvl.cloudfront.net/media/images/75.png',
        width: '75',
        height: '75',
        type: 'image/png'
      },
      {
        url: 'http://examples.opengraphprotocol.us/media/images/50.png',
        secure_url: 'https://d72cgtgi6hvvl.cloudfront.net/media/images/50.png',
        width: '50',
        height: '50',
        type: 'image/png'
      }
    ]
  },

  video: {
    director: [
      'http://examples.opengraphprotocol.us/profile.html',
      'http://examples.opengraphprotocol.us/profile2.html'
    ],
    actor: [
      {
        url: 'http://examples.opengraphprotocol.us/profile.html',
        role: 'Role in Move'
      }
    ],
    writer: [
      'http://examples.opengraphprotocol.us/profile.html'
    ],
    series: 'http://www.imdb.com/title/tt1520211/',
    release_date: '1895-12-28',
    duration: '50',
    tag: [
      'La Ciotat',
      'train'
    ]
  }
})

The object key chain is concated to form the value of property of <meta>. Except these are renamed:

og:locale:current -> og:locale
og:image:url -> og:image
og:video:url -> og:video
og:audio:url -> og:audio
music:album:url -> music:album
music:song:url -> music:song
video:actor:url -> video:actor

APIs

new OpenGraph(defaults, customNS)

Creating an instance.

Params:

defaults: Object. Default properties. For example you can set og:site_name here so you don't need to set it every time when calling openGraph.set().
customNS: Object. Default custom namespace. e.g.:

{
  my_namespace: 'http://example.com/ns#',
  another_namespace: 'http://example.com/ns/another#'
}

You can reset defaults and customNS by setting this.defaults and this.customNS.

openGraph.set(properties, customNS)

Setting the open graph of the page. The meta elements will be inserted into document head.

openGraph.clear()

Removing the meta elements from document head.

License

MIT