Demos
Input(Vue)
Calendar
Validation

Calendar Valid Dates (Vue)

In some cases, not all dates in the range are valid. To handle these situations, the Calendar control has an itemValidator property. This sample uses this property to demonstrate a common use case. It prevents users from selecting dates on weekends and holidays.

Learn about Input Controls | Calendar Validation Documentation | Calendar API Reference

This example uses Vue.

JavaScript
Angular
Vue
React
app.vue
index.html
data.js
Copy to CodeMine
<template>
    <div class="container-fluid">
        <wj-calendar :initialized="initCalendar" :formatItem="formatItem" :itemValidator="validator" v-model:value="date">
        </wj-calendar>
        <div>
            The current date is <b>{{ formatDate(theCalendar.value) }}</b>.
        </div>
    </div>
</template>

<script setup>
import { getHolidays } from "./data";
import { ref } from "vue";

const theCalendar = ref({});
const holidays = ref(getHolidays());
const date = ref(new Date());

function initCalendar(calendar) {
    theCalendar.value = calendar;
}

function formatItem(s, e) {
    // apply styles to weekends and holidays
    let weekday = e.data.getDay(),
        holiday = _getHoliday(e.data);

    wijmo.toggleClass(e.item, "date-weekend", weekday == 0 || weekday == 6);
    wijmo.toggleClass(e.item, "date-holiday", holiday != null);
    e.item.title = holiday || "";
}

function validator(date) {
    return date.getDay() % 6 != 0 && !_getHoliday(date);
}

function _getHoliday(date) {
    let day = date.getDate(),
        month = date.getMonth() + 1,
        holiday = holidays.value[month + "/" + day];
    //
    if (!holiday) {
        let weekDay = date.getDay(),
            weekNum = Math.floor((day - 1) / 7) + 1;
        holiday = holidays.value[month + "/" + weekNum + "/" + weekDay];
    }
    //
    return holiday;
}

function formatDate(time) {
    return wijmo.Globalize.format(time, "D");
}
</script>

<style>
.container-fluid .wj-calendar {
    display: inline-block;
}

.container-fluid .wj-calendar td {
    padding: 4px 6px 3px 6px;
}

.container-fluid .wj-calendar .wj-header {
    color: white;
    background: #808080;
}

.container-fluid .wj-calendar .date-holiday:not(.wj-state-selected) {
    font-weight: bold;
    color: #008f22;
    background: #f0fff0;
    outline: 2pt solid #008f22;
}

.container-fluid .wj-calendar .date-weekend:not(.wj-state-selected) {
    background-color: #d8ffa6;
}

body {
    margin-bottom: 36px;
}
</style>
<template> <div class="container-fluid"> <wj-calendar :initialized="initCalendar" :formatItem="formatItem" :itemValidator="validator" v-model:value="date"> </wj-calendar> <div> The current date is <b>{{ formatDate(theCalendar.value) }}</b>. </div> </div> </template> <script setup> import { getHolidays } from "./data"; import { ref } from "vue"; const theCalendar = ref({}); const holidays = ref(getHolidays()); const date = ref(new Date()); function initCalendar(calendar) { theCalendar.value = calendar; } function formatItem(s, e) { // apply styles to weekends and holidays let weekday = e.data.getDay(), holiday = _getHoliday(e.data); wijmo.toggleClass(e.item, "date-weekend", weekday == 0 || weekday == 6); wijmo.toggleClass(e.item, "date-holiday", holiday != null); e.item.title = holiday || ""; } function validator(date) { return date.getDay() % 6 != 0 && !_getHoliday(date); } function _getHoliday(date) { let day = date.getDate(), month = date.getMonth() + 1, holiday = holidays.value[month + "/" + day]; // if (!holiday) { let weekDay = date.getDay(), weekNum = Math.floor((day - 1) / 7) + 1; holiday = holidays.value[month + "/" + weekNum + "/" + weekDay]; } // return holiday; } function formatDate(time) { return wijmo.Globalize.format(time, "D"); } </script> <style> .container-fluid .wj-calendar { display: inline-block; } .container-fluid .wj-calendar td { padding: 4px 6px 3px 6px; } .container-fluid .wj-calendar .wj-header { color: white; background: #808080; } .container-fluid .wj-calendar .date-holiday:not(.wj-state-selected) { font-weight: bold; color: #008f22; background: #f0fff0; outline: 2pt solid #008f22; } .container-fluid .wj-calendar .date-weekend:not(.wj-state-selected) { background-color: #d8ffa6; } body { margin-bottom: 36px; } </style>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>MESCIUS Wijmo Calendar Validation</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- SystemJS --> <script src="compiler.js" type="module"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.21.5/system.src.js" integrity="sha512-skZbMyvYdNoZfLmiGn5ii6KmklM82rYX2uWctBhzaXPxJgiv4XBwJnFGr5k8s+6tE1pcR1nuTKghozJHyzMcoA==" crossorigin="anonymous"></script> <script src="systemjs.config.js"></script> <script> System.import('./src/app.js'); </script> </head> <body> <div id="app"></div> </body> </html>
export function getHolidays() { return { '1/1': 'New Year\'s Day', '6/14': 'Flag Day', '7/4': 'Independence Day', '11/11': 'Veteran\'s Day', '12/25': 'Christmas Day', '1/3/1': 'Martin Luther King\'s Birthday', '2/3/1': 'Washington\'s Birthday', '5/3/6': 'Armed Forces Day', '9/1/1': 'Labor Day', '10/2/1': 'Columbus Day', '11/4/4': 'Thanksgiving Day' // fourth Thursday in November }; }
(function (global) { System.config({ transpiler: 'plugin-babel', babelOptions: { es2015: true }, meta: { '*.css': { loader: 'css' }, '*.vue': { loader: '../plugin-vue/index.js' } //'*.vue': { loader: 'systemjs-plugin-vue' } }, paths: { // paths serve as alias 'npm:': 'node_modules/' }, // map tells the System loader where to look for things map: { '@mescius/wijmo': 'npm:@mescius/wijmo/index.js', '@mescius/wijmo.input': 'npm:@mescius/wijmo.input/index.js', '@mescius/wijmo.styles': 'npm:@mescius/wijmo.styles', '@mescius/wijmo.cultures': 'npm:@mescius/wijmo.cultures', '@mescius/wijmo.chart': 'npm:@mescius/wijmo.chart/index.js', '@mescius/wijmo.chart.analytics': 'npm:@mescius/wijmo.chart.analytics/index.js', '@mescius/wijmo.chart.animation': 'npm:@mescius/wijmo.chart.animation/index.js', '@mescius/wijmo.chart.annotation': 'npm:@mescius/wijmo.chart.annotation/index.js', '@mescius/wijmo.chart.finance': 'npm:@mescius/wijmo.chart.finance/index.js', '@mescius/wijmo.chart.finance.analytics': 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