Calendar.js - javascript library, which helps you in creating calendars on your web pages. You just need to write a line of code to create calendar.

It's quick start guide for Calendar.js. Here you can read short documentation about library.

1. Description
2. Code Examples
3. Motivation
4. Installation
5. API Reference
   • Enabling
   • Methods
   • Events
6. Contributing
7. License

You can create calendar and enable buttons for changing months easily and fast, just write this code:

var calendar = new Calendar("#calendar", 9, 2016);  // creating calendar with september of 2016 in block with id="calendar"
    
var btn0 = document.querySelector('.button0'); // it's first button
var btn1 = document.querySelector('.button1'); // it's second button

btn0.onclick = function () {
  calendar.prevMonth(); // change month to the previous by pressing the button
};
    
btn1.onclick = function () {
  calendar.nextMonth(); // change month to the next by pressing the button
};

Idea of Calendar.js borned in April of 2017. I've been making a website, and I needed to realize calendar on this website. So, then i thought that I can make javascript library, which will help in creating calendars. I really hope that my lib can help people. Creating of this library started in the same month. Now this project is in active development.

Download this library and put it in you directory, then connect it in HTML file:

<script src="calendar.js"></script>

creates and displays calendar for month of year in element which selector equals cssSelector

arguments:

• cssSelector - string - css selector of block in which will append calendar
• month - number - the number of the month which will be displayed in the calendar
• year - number - the number of the year which will be displayed in the calendar
• daysNames (optional) - array - an array with the names of the days of the week
• monthNames (optional) - array - an array with the names of the months of the year

example:

var calendar = new Calendar("#calendar", 6, 2017);

displays next month and returns it

returning value:

• month - number

example:

var cal = new Calendar('#cal', 5, 2013);
cal.nextMonth(); // 6

displays previous month and returns it

returning value:

• month - number

example:

var cal = new Calendar('#cal', 8, 2007);
cal.prevMonth(); // 7

sets month, returns and displays it

arguments:

• month - number

returning value:

• month - number

example:

var cal = new Calendar('#cal', 3, 2010);
cal.setMonth(10); // 10

returns current month

returning value:

• month - number

example:

var cal = new Calendar('#cal', 1, 2014);
cal.getMonth(); // 1

returns name of current month

returning value:

• month name - string

example:

var cal = new Calendar('#cal', 7, 2020);
cal.getMonthName(); // July

displays next year and returns it

returning value:

• year - number

example:

var cal = new Calendar('#cal', 3, 1968);
cal.nextYear(); // 1969

displays previous year and returns it

returning value:

• year - number

example:

var cal = new Calendar('#cal', 8, 1975);
cal.prevYear(); // 1974

sets year, returns and displays it

arguments:

• year - number

returning value:

• year - number

example:

var cal = new Calendar('#cal', 2, 2017);
cal.setYear(2003); // 2003

returns current year

returning value:

• year - number

example:

var cal = new Calendar('#cal', 6, 2012);
cal.getYear(); // 2012

calls function when client clicks on dateElement in calendar and adds classes from classArr to dateElement

function gets arguments: day, month, year

arguments:

• func (day, month, year) - function
• classArr - array

func arguments:

• day - number
• month - number
• year - number

example:

var cal = new Calendar('#cal', 6, 2012);
cal.ondateclick(function (day, month, year) {
  console.log("It's " + day + "." + month + "." + year);
}, ['date--active']);

You can make styles for your calendar. It's easy, because calendar has simple structure:

<div id="calendar">  <!-- it's calendar's wrapper block -->
  <table>
    <tr>
      <th></th>  <!-- here is 7 <th> elements with names of the days of the week -->
    </tr>
    <tr>  <!-- here is one of <tr> elements with days -->
      <td></td>  <!-- and here one of 7 <td> elements with numbers of days, which located in <tr> element -->
    </tr> 
  </table>
</div>

Part of HTML-code:

<section class="calendar-wrapper">
  <div class="calendar-header">
    <span class="button0"><</span>
    <span class="month-name"></span>
    <span class="button1">></span>
  </div>
  <div id="calendar"></div>
</section>

Part of CSS-code:

.calendar-wrapper * {
  box-sizing: border-box;
}

.calendar-wrapper {
  text-align: center;
  width: 245px;
}

.calendar-header {
  background-color: rgb(93, 179, 127);
  color: white;
  padding: 15px;
  font-size: 18px;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
}
        
#calendar table {
  border-collapse: collapse;
  background-color: white;
}

#calendar tr:nth-child(1) {
  background-color: rgb(93, 179, 127);
}

#calendar th {
  padding: 2px;
  font-weight: normal;
  color: white;
  font-size: 14px;
  margin-bottom: 5px;
  width: 35px;
}

#calendar td {
  width: 35px;
  height: 35px;
  border-radius: 50%;
}

.date--active {
  background-color: rgb(93, 179, 127);
  color: white;
}

Part of JS-code:

var calendar = new Calendar("#calendar", 9, 2016);
    
var div = document.querySelector('.month-name');
var btn0 = document.querySelector('.button0');
var btn1 = document.querySelector('.button1');

setInterval(function () {
  div.innerHTML = calendar.getMonthName() + ' ' + calendar.getYear();
}, 4);

btn0.onclick = function () {
  calendar.prevMonth();
};
    
btn1.onclick = function () {
  calendar.nextMonth();
};
    
calendar.ondateclick(function (day, month, year) {
  console.log("It's " + day + "." + month + "." + year);
}, ['date--active']);

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request :D

MIT License

Copyright (c) 2017 Nikita Ermishin