Pros of react-dates

• More comprehensive date-picking functionality, including range selection
• Extensive customization options for appearance and behavior
• Well-established with a large community and extensive documentation

Cons of react-dates

• Larger bundle size due to more features and dependencies
• Steeper learning curve for basic implementation
• Less flexible for non-standard calendar layouts or custom date representations

Code Comparison

react-dates:

import { DateRangePicker } from 'react-dates';

<DateRangePicker
  startDate={this.state.startDate}
  startDateId="start_date_id"
  endDate={this.state.endDate}
  endDateId="end_date_id"
  onDatesChange={({ startDate, endDate }) => this.setState({ startDate, endDate })}
  focusedInput={this.state.focusedInput}
  onFocusChange={focusedInput => this.setState({ focusedInput })}
/>

Calendar:

CalendarView(CalendarDay.today())
    .dayBinder(dayBinder)
    .monthHeaderBinder(monthHeaderBinder)
    .monthScrollListener { month ->
        // Handle month change
    }

The Calendar library offers a more lightweight and flexible approach, suitable for custom calendar implementations in Android applications. It provides a clean API for binding day and month views, allowing for greater customization of the calendar's appearance and behavior. However, it lacks some of the advanced date-picking features found in react-dates, making it more suitable for simpler calendar display use cases or as a foundation for building custom date selection functionality.

Pros of react-native-calendars

• Cross-platform support for both iOS and Android
• Extensive customization options for calendar appearance
• Built-in support for various calendar types (e.g., range, agenda)

Cons of react-native-calendars

• Larger bundle size due to additional features
• Steeper learning curve for complex customizations
• Limited support for custom date management libraries

Code Comparison

react-native-calendars:

<Calendar
  onDayPress={(day) => {console.log('selected day', day)}}
  markedDates={{
    '2023-05-16': {selected: true, marked: true, selectedColor: 'blue'}
  }}
/>

Calendar:

val calendar = CalendarView(context)
calendar.dayBinder = object : DayBinder<DayViewContainer> {
    override fun create(view: View) = DayViewContainer(view)
    override fun bind(container: DayViewContainer, day: CalendarDay) {
        container.textView.text = day.date.dayOfMonth.toString()
    }
}

Both libraries offer robust calendar functionality, but react-native-calendars is more suited for React Native projects with its cross-platform support and extensive customization options. Calendar, on the other hand, is a Kotlin-based library that provides more flexibility for custom date management and potentially better performance for Android-specific projects.

Pros of FullCalendar

• More comprehensive feature set, including support for various calendar views (month, week, day, list)
• Extensive documentation and community support
• Better integration with popular JavaScript frameworks (React, Vue, Angular)

Cons of FullCalendar

• Larger file size and potentially heavier performance impact
• Steeper learning curve due to more complex API
• Commercial license required for some features

Code Comparison

FullCalendar:

document.addEventListener('DOMContentLoaded', function() {
  var calendarEl = document.getElementById('calendar');
  var calendar = new FullCalendar.Calendar(calendarEl, {
    initialView: 'dayGridMonth',
    events: [
      { title: 'Event', start: '2023-05-01' }
    ]
  });
  calendar.render();
});

Calendar:

val calendarView = findViewById<CalendarView>(R.id.calendarView)
calendarView.dayBinder = object : DayBinder<DayViewContainer> {
    override fun create(view: View) = DayViewContainer(view)
    override fun bind(container: DayViewContainer, day: CalendarDay) {
        container.textView.text = day.date.dayOfMonth.toString()
    }
}

Note: Calendar is primarily for Android, while FullCalendar is for web applications, making a direct code comparison challenging. The examples show basic setup for each library in their respective environments.

Pros of Calendar

• Built specifically for React, offering seamless integration with React applications
• Provides a wide range of customization options and props for flexibility
• Supports internationalization out of the box

Cons of Calendar

• Less actively maintained compared to Calendar, with fewer recent updates
• Documentation is not as comprehensive or well-organized
• Limited support for advanced features like custom date ranges or multi-view calendars

Code Comparison

Calendar (react-component):

import Calendar from 'rc-calendar';

<Calendar
  onSelect={this.onSelect}
  disabledDate={disabledDate}
/>

Calendar (kizitonwose):

val calendarView = findViewById<CalendarView>(R.id.calendarView)
calendarView.dayBinder = object : DayBinder<DayViewContainer> {
    override fun create(view: View) = DayViewContainer(view)
    override fun bind(container: DayViewContainer, day: CalendarDay) {
        // Bind data to the container
    }
}

The Calendar (react-component) example shows a simple React component implementation, while the Calendar (kizitonwose) example demonstrates the Kotlin-based approach with more granular control over day binding and customization.

Pros of v-calendar

• More comprehensive feature set, including date pickers and custom calendars
• Better documentation and examples for easier implementation
• Supports both Vue 2 and Vue 3, offering wider compatibility

Cons of v-calendar

• Larger bundle size due to more features, potentially impacting performance
• Steeper learning curve for developers due to its extensive API
• Less customizable in terms of core calendar layout and structure

Code Comparison

v-calendar:

<v-calendar
  :attributes="attributes"
  @dayclick="onDayClick"
  :is-expanded="false"
  :columns="$screens({ default: 1, lg: 2 })"
/>

Calendar:

val currentMonth = YearMonth.now()
val startDate = currentMonth.minusMonths(10).atStartOfMonth()
val endDate = currentMonth.plusMonths(10).atEndOfMonth()
val daysOfWeek = daysOfWeek()

CalendarView(
    startDate = startDate,
    endDate = endDate,
    daysOfWeek = daysOfWeek
)

Summary

v-calendar offers a more feature-rich solution for Vue.js applications, with better documentation and wider Vue version support. However, it comes at the cost of a larger bundle size and potentially more complex implementation. Calendar, on the other hand, provides a more lightweight and customizable option for Kotlin/Android development, but with a more focused feature set. The choice between the two depends on the specific project requirements, target platform, and desired level of customization.

Pros of bootstrap-datepicker

• Extensive browser compatibility, including older versions
• Well-established with a large user base and community support
• Integrates seamlessly with Bootstrap, providing consistent styling

Cons of bootstrap-datepicker

• Less modern and flexible compared to Calendar
• Heavier dependency on jQuery and Bootstrap
• Limited customization options for advanced use cases

Code Comparison

bootstrap-datepicker:

$('#datepicker').datepicker({
    format: 'mm/dd/yyyy',
    startDate: '-3d'
});

Calendar:

val calendarView = findViewById<CalendarView>(R.id.calendarView)
calendarView.dayBinder = object : DayBinder<DayViewContainer> {
    override fun create(view: View) = DayViewContainer(view)
    override fun bind(container: DayViewContainer, day: CalendarDay) {
        container.textView.text = day.date.dayOfMonth.toString()
    }
}

The code snippets demonstrate the initialization and basic usage of each library. bootstrap-datepicker uses a jQuery-style approach with options, while Calendar employs a more modern, object-oriented pattern with custom binders for flexibility.

bootstrap-datepicker is easier to set up for simple use cases, especially within Bootstrap projects. However, Calendar offers more granular control and a more native feel for Android applications, albeit with a steeper learning curve.