Save Event As Icalendar Using Javascript

Hi guys anyone of you know how to save an event as google calendar or ICal? Scenario is I have the start and end date and the title of the event. If I click on the button it should

Solution 1:

This seemed like an interesting challenge, so I spend much of the day seeing what I could do. I would strongly suggest using a library or PHP so that all formats and such as retained properly.

Here is one way you might try:

Example Code: https://jsfiddle.net/Twisty/6sye1f75/

JavaScript

var eventData = {
  "title": "ebay live auction test",
  "desc": "this is a live auction test \n testing new line.",
  "location": "my house",
  "url": "http://www.ebay.com",
  "time": {
    "start": "March 12, 2014 14:00:00",
    "end": "march 13, 2014 15:30:00",
    "zone": "-07:00",
    "allday": false
  },
};

$(function() {
  functionadjustToUTC(dateObj, zone) {
    var dateOut = newDate(dateObj),
      hours, mins;

    if (isNaN(dateOut.getTime())) {
      returnnewDate();
    }

    // adjust to UTC
    hours = zone.substring(1, 3);
    mins = zone.substring(4, 6);
    if (zone.substring(0, 1) === '-') {
      dateOut.setHours(dateOut.getHours() + (hours - 0));
      dateOut.setMinutes(dateOut.getMinutes() + (mins - 0));
    } else {
      dateOut.setHours(dateOut.getHours() - hours);
      dateOut.setMinutes(dateOut.getMinutes() - mins);
    }
    return dateOut;
  }

  functiongetDatePart(part, digits) {
    part = part.toString();
    while (part.length < digits) {
      part = '0' + part;
    }
    return part;
  }

  functiongetUTCTime(dateObj) {
    var newDateObj = adjustToUTC(dateObj, eventData.time.zone);
    returngetDatePart(newDateObj.getFullYear(), 4) + getDatePart(newDateObj.getMonth() + 1, 2) + getDatePart(newDateObj.getDate(), 2) + 'T' + getDatePart(newDateObj.getHours(), 2) + getDatePart(newDateObj.getMinutes(), 2) + getDatePart(newDateObj.getSeconds(), 2) + 'Z';
  }

  functionprepareEvent(data) {
    var tData = "";
    tData += "BEGIN:VCALANDER\r\n";
    tData += "VERSION:2.0\r\n";
    tData += "METHOD:PUBLISH\r\n";
    tData += "BEGIN:VEVENT\r\n";
    tData += "SUMMARY:" + data.title + "\r\n";
    tData += "DESCRIPTION:" + data.desc + "\r\n";
    tData += "LOCATION:" + data.location + "\r\n";
    tData += "URL:" + data.url + "\r\n";
    tData += "UID:00" + Math.floor(Math.random() * 10000000) + "-Custom@test\r\n";
    tData += "SEQUENCE:0\r\n";
    tData += "DTSTAMP:" + getUTCTime(data.time.start) + "\r\n";
    tData += "DTSTART:" + getUTCTime(data.time.start) + "\r\n";
    tData += "DTEND:" + getUTCTime(data.time.end) + "\r\n";
    tData += "END:VEVENT\r\n";
    tData += "END:VCALENDAR\r\n";
    return tData;
  }

  $(".show-event.ics pre").html(prepareEvent(eventData));
  $.each(eventData, function(k, v) {
    var item = $("<li>");
    if (k !== "time") {
      item.append($("<label>").html(k + ":"));
      item.append($("<span>").html(v));
    } else {
      item.append($("<label>").html(k + ":"));
      item.append($("<ul>"));
      item.find("ul").append($("<li>").append($("<label>").html("start:")).append($("<span>").html(v.start + " (" + v.zone + ")")));
      item.find("ul").append($("<li>").append($("<label>").html("end:")).append($("<span>").html(v.end + " (" + v.zone + ")")));
    }
    $(".show-event.html ul").append(item);
  });

  $(".controlgroup").controlgroup();

  $("#save-event").click(function(e) {
    var contents = prepareEvent(eventData);
    var name = eventData.title.replace(/ /g, "_") + ".ics";
    $(this)[0].download = name;
    $(this).attr("href", "data:text/calendar;" + encodeURIComponent(content));
    console.log($(this));
    returntrue;
  });
});

Refer to:

1. Create a file in memory for user to download, not through server
2. How to create a dynamic file + link for download in Javascript?

I also harvested a few of the functions out of here: jQuery AddCalEvent Plugin Demos.

This is not been able to be tested in jsfiddle due to the way it works. I may move this to a plnkr or codepen to see if it works there.