Lightweight, high-performance calendar component based on Vue.js

Calendars play a crucial role in many web applications, from event scheduling to task management. In this detailed guide, we will embark on the journey of creating a lightweight, high-performance calendar component using Vue.js. We’ll leverage Vue.js for its reactive nature and flexibility, ensuring that our calendar not only looks sleek but also performs efficiently.

Introduction to Vue.js

Vue.js is a progressive JavaScript framework designed for building user interfaces. Its simplicity and reactivity make it an ideal choice for developing dynamic components, such as calendars. We’ll utilize Vue.js to create a responsive and performant calendar that can be seamlessly integrated into various projects.

Setting Up the Project

Start by initializing a new Vue.js project using the Vue CLI:

vue create vue-calendar-component

Navigate to the project directory:

cd vue-calendar-component

Install additional dependencies, such as Moment.js for handling dates:

npm install moment --save

Designing the Calendar Component

Create a modular structure for the calendar component. Consider breaking it down into sub-components to manage different aspects like header, days, and events.

<!-- Calendar.vue -->
<template>
  <div class="calendar">
    <CalendarHeader />
    <CalendarDays />
    <!-- Add more sub-components as needed -->
  </div>
</template>

<script>
import CalendarHeader from './CalendarHeader.vue';
import CalendarDays from './CalendarDays.vue';

export default {
  components: {
    CalendarHeader,
    CalendarDays,
    // Register additional components here
  },
  data() {
    return {
      currentDate: moment(),
      selectedDate: null,
      // Add more data properties as needed
    };
  },
  methods: {
    // Add methods for handling user interactions and events
  },
};
</script>

<style scoped>
/* Component-specific styles here */
</style>

Populating Calendar Days

Create a sub-component (CalendarDays.vue) responsible for displaying the days within the calendar.

<!-- CalendarDays.vue -->
<template>
  <div class="calendar-days">
    <!-- Display days based on the current month -->
  </div>
</template>

<script>
export default {
  props: ['currentDate', 'selectedDate'],
  data() {
    return {
      daysInMonth: [],
      // Add more data properties as needed
    };
  },
  computed: {
    // Calculate and return the days of the current month
  },
  methods: {
    // Add methods for handling user interactions and events
  },
};
</script>

<style scoped>
/* Component-specific styles here */
</style>

Styling the Calendar

Enhance the visual appeal of your calendar by adding CSS styles. Customize the styles based on the design requirements of your application.

/* Calendar.vue */
.calendar {
  max-width: 400px;
  margin: auto;
}

/* Additional styling as needed */

Incorporating Interactivity

Implement user interactions and events to make your calendar component responsive. Add methods to handle selecting dates, navigating months, and interacting with events.

<!-- CalendarDays.vue -->
<template>
  <div class="calendar-days">
    <div v-for="day in daysInMonth" :key="day.date" @click="selectDate(day)">
      {{ day.number }}
    </div>
  </div>
</template>

<script>
export default {
  props: ['currentDate', 'selectedDate'],
  data() {
    return {
      daysInMonth: [],
    };
  },
  computed: {
    // Calculate and return the days of the current month
  },
  methods: {
    selectDate(day) {
      // Handle date selection
      this.$emit('date-selected', day.date);
    },
  },
};
</script>

<style scoped>
/* Component-specific styles here */
.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.calendar-days div {
  cursor: pointer;
  padding: 8px;
  text-align: center;
  border: 1px solid #ccc;
}

.calendar-days div:hover {
  background-color: #f0f0f0;
}
</style>

Feature of calendar component based on Vue.js

• Lightweight, high-performance calendar component based on Vue.js
• Small memory usage, good performance, good style, and high scalability
• Native js development, no third-party library introduced
• Date Picker, Date Range, Multiple Calendars, Modal Calendar

There are following steps to use calendar component based on Vue.js

Install

npm i vue-functional-calendar --save

Usage

Vue.use()

// Introduced in vue file
import FunctionalCalendar from 'vue-functional-calendar';
Vue.use(FunctionalCalendar, {
    dayNames: ['Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su']
});

Import Component

// Introduced in vue file
import { FunctionalCalendar } from 'vue-functional-calendar';

Component Settings

export default {
    components: {
        FunctionalCalendar
    },
    data() {
        return {
            calendarData: {}
        }
    }
}

Template Usage

<FunctionalCalendar
      // v-model="calendarData"
      
      // v-on:changedMonth="changedMonth"
      // v-on:changedYear="changedYear"
      
      // :sundayStart="true"
      // :date-format="'dd/mm/yyyy'"
      // :is-date-range="true"
      // :is-date-picker="true"      
       :...:
></FunctionalCalendar>

Usage With Configs

Component Settings

export default {
    components: {
        FunctionalCalendar
    },
    data() {
        return {
            calendarData: {},
            calendarConfigs: {
                sundayStart: false,
                dateFormat: 'dd/mm/yyyy',
                isDatePicker: false,
                isDateRange: false
            }
        }
    },
}

Template Usage

<FunctionalCalendar
      // v-model="calendarData"
      // :configs="calendarConfigs"
></FunctionalCalendar>

A note on markDates

The markedDates property must be in JavaScript Date format, e.g, no leading zeroes on month and days.

✅ Correct: 1/12/2019 ❎ Incorrect: 01/12/2019

Available props

Slots

Events

Add the ref attribute to the calendar component and use these methods to do more

For example: <FunctionalCalendar ref="Calendar"></FunctionalCalendar>

    ✅ this.$refs.Calendar.PreMonth();  //Call method implementation to go to previous month
    ✅ this.$refs.Calendar.NextMonth(); //Call method implementation to go to next month
    ✅ this.$refs.Calendar.PreYear(); //Call method implementation to go to previous year
    ✅ this.$refs.Calendar.NextYear(); //Call method implementation to go to next year
    ✅ this.$refs.Calendar.ChooseDate('today'); //Call method implementation to go to today
    ✅ this.$refs.Calendar.ChooseDate('25/09/2020'); //Call method implementation to go to a date