microformats-parser

A JavaScript microformats v2 parser, with v1 back-compatibility. View the demo. Works with both the browser and node.js.

Follows the microformats2 parsing specification.

Table of contents

• Quick start
  • Installation
  • Simple use
• API
  • mf2()
• Support
  • Microformats v1
  • Microformats v2
  • Experimental options
    • lang
    • textContent
• Contributing

Quick start

Installation

# yarn
yarn add microformats-parser

# npm
npm i microformats-parser

Simple use

const { mf2 } = require("microformats-parser");

const parsed = mf2('<a class="h-card" href="/" rel="me">Jimmy</a>', {
  baseUrl: "http://example.com/",
});

console.log(parsed);

Outputs:

{
  "items": [
    {
      "properties": {
        "name": ["Jimmy"],
        "url": ["http://example.com/"]
      },
      "type": ["h-card"]
    }
  ],
  "rel-urls": {
    "http://example.com": {
      "rels": ["me"],
      "text": "Jimmy"
    }
  },
  "rels": {
    "me": ["http://example.com/"]
  }
}

API

mf2()

Use: mf2(html: string, options: { baseUrl: string, experimental: object })

• html (string, required) - the HTML string to be parsed
• options (object, required) - parsing options, with the following properties:
  • baseUrl (string, required) - a base URL to resolve relative URLs
  • experimental (object, optional) - experimental (non-standard) options
    • lang (boolean, optional) - enable support for parsing lang attributes
    • textContent (boolean, optional) - enable support for better collapsing whitespace in text content.

Returns the parsed microformats from the HTML string

Support

Microformats v1

This package will parse microformats v1, however support will be limited to the v1 tests in the microformats test suite. Contributions are still welcome for improving v1 support.

Microformats v2

We provide support for all microformats v2 parsing, as detailed in the microformats2 parsing specification. If there is an issue with v2 parsing, please create an issue.

Experimental options

There is also support for some experimental parsing options. These can be enabled with the experimental flags in the options API.

Note: Experimental options are subject to change at short notice and may change their behaviour without a major version update

lang

Parse microformats for lang attributes. This will include lang on microformats and e-* properties where available.

These are sourced from the element themselves, a parent microformat, the HTML document or a meta tag.

textContent

When parsing microformats for text content, all the consecutive whitespace is collapsed into a single space. <br/> and <p> tags are treated as line breaks.

metaformats

Enables fallback to metaformats parsing which looks at <meta> tags to infer content.

Contributing

See our contributing guidelines for more information.