ical.js

(Formerly node-ical)

A tolerant, minimal icalendar parser for javascript/node (http://tools.ietf.org/html/rfc5545)

Install - Node.js

ical.js is availble on npm:

npm install ical

API

ical.parseICS(str)

Parses a string with an ICS File

var data = ical.parseFile(filename)

Reads in the specified iCal file, parses it and returns the parsed data

ical.fromURL(url, options, function(err, data) {} )

Use the request library to fetch the specified URL (opts gets passed on to the request() call), and call the function with the result (either an error or the data).

Example 1 - Print list of upcoming node conferences (see example.js)

'use strict';

const ical = require('ical');
const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];

ical.fromURL('http://lanyrd.com/topics/nodejs/nodejs.ics', {}, function (err, data) {
	for (let k in data) {
		if (data.hasOwnProperty(k)) {
			var ev = data[k];
			if (data[k].type == 'VEVENT') {
				console.log(`${ev.summary} is in ${ev.location} on the ${ev.start.getDate()} of ${months[ev.start.getMonth()]} at ${ev.start.toLocaleTimeString('en-GB')}`);

			}
		}
	}
});

Recurrences and Exceptions

Calendar events with recurrence rules can be significantly more complicated to handle correctly. There are three parts to handling them:

1. rrule - the recurrence rule specifying the pattern of recurring dates and times for the event.
2. recurrences - an optional array of event data that can override specific occurrences of the event.
3. exdate - an optional array of dates that should be excluded from the recurrence pattern.

See example_rrule.js for an example of handling recurring calendar events.