A regulalr expression based JavaScript VCARD parser into a JSON

output.json

{
  "adr": [
    {
      "meta": {
        "TYPE": "INTL",
        "TYPE1": "PARCEL",
        "TYPE2": "WORK"
      },
      "value": [
        "",
        "",
        "UltraMobile Street",
        "Planet Earth",
        "Milky Way",
        "2134",
        ""
      ]
    },
    {
      "meta": {
        "TYPE": "DOM",
        "TYPE1": "PARCEL",
        "TYPE2": "HOME"
      },
      "value": [
        "",
        "",
        "Enabled Avenue",
        "Planet Erath",
        "Milky Way",
        "1234",
        ""
      ]
    }
  ],
  "email": [
    {
      "meta": {
        "TYPE": "home"
      },
      "value": [
        "home@domain.com"
      ]
    },
    {
      "meta": {
        "TYPE": "office"
      },
      "value": [
        "office@domain.com"
      ]
    },
    {
      "meta": {
        "TYPE": "personal"
      },
      "value": [
        "personal@domain.com"
      ]
    }
  ],
  "org": "Enabled",
  "tel": [
    {
      "meta": {
        "TYPE": "mobile"
      },
      "value": [
        "+1 234 567 890"
      ]
    },
    {
      "meta": {
        "TYPE": "office"
      },
      "value": [
        "+1 234 567 890"
      ]
    },
    {
      "meta": {
        "TYPE": "personal"
      },
      "value": [
        "+1 234 567 890"
      ]
    }
  ],
  "title": "Photographer",
  "url": [
    {
      "meta": {
        "TYPE": "WORK"
      },
      "value": [
        "www.domain.com"
      ]
    },
    {
      "meta": {
        "TYPE": "facebook"
      },
      "value": [
        "www.facebook.com"
      ]
    },
    {
      "meta": {
        "TYPE": "twitter"
      },
      "value": [
        "www.twitter.com"
      ]
    },
    {
      "meta": {
        "TYPE": "google plus"
      },
      "value": [
        "www.googleplus.com"
      ]
    }
  ]
}

test.html

<pre>BEGIN:VCARD
N:Black;Karla;;Mrs;
ADR;INTL;PARCEL;WORK:;;UltraMobile Street;Planet Earth;Milky Way;2134;
ADR;DOM;PARCEL;HOME:;;Enabled Avenue;Planet Erath;Milky Way;1234;
EMAIL;home:home@domain.com
EMAIL;office:office@domain.com
EMAIL;personal:personal@domain.com
ORG:Enabled
TEL;mobile:+1 234 567 890
TEL;office:+1 234 567 890
TEL;personal:+1 234 567 890
TITLE:Photographer
URL;WORK:www.domain.com
URL;facebook:www.facebook.com
URL;twitter:www.twitter.com
URL;google plus:www.googleplus.com
END:VCARD
</pre>

vcardParser.js

function parse(input) {
    var Re1 = /^(version|fn|title|org):(.+)$/i;
    var Re2 = /^([^:;]+);([^:]+):(.+)$/;
    var ReKey = /item\d{1,2}\./;
    var fields = {};

    input.split(/\r\n|\r|\n/).forEach(function (line) {
        var results, key;

        if (Re1.test(line)) {
            results = line.match(Re1);
            key = results[1].toLowerCase();
            fields[key] = results[2];
        } else if (Re2.test(line)) {
            results = line.match(Re2);
            key = results[1].replace(ReKey, '').toLowerCase();

            var meta = {};
            results[2].split(';')
                .map(function (p, i) {
                var match = p.match(/([a-z]+)=(.*)/i);
                if (match) {
                    return [match[1], match[2]];
                } else {
                    return ["TYPE" + (i === 0 ? "" : i), p];
                }
            })
                .forEach(function (p) {
                meta[p[0]] = p[1];
            });

            if (!fields[key]) fields[key] = [];

            fields[key].push({
                meta: meta,
                value: results[3].split(';')
            })
        }
    });

    return fields;
};

var $ = function(selector) {
    return document.querySelector(selector);
};

$('pre').innerHTML = JSON.stringify(
    parse(document.body.innerText), 0, 2
);