JSFiddle - React, Tailwind, and code Playground

by Anchit Gupta

HTML

<div class="calander">
    <div class="date">
        <div class="calandertext">&#60;</div>
    </div>
    <div class="month" id="month2">
        <div class="calandertext">April</div>
    </div>
    <div class="date">
        <div class="calandertext">&#62;</div>
    </div>
    <div class="day">
        <div class="calandertext">M</div>
    </div>
    <div class="day">
        <div class="calandertext">T</div>
    </div>
    <div class="day">
        <div class="calandertext">W</div>
    </div>
    <div class="day">
        <div class="calandertext">T</div>
    </div>
    <div class="day">
        <div class="calandertext">F</div>
    </div>
    <div class="day">
        <div class="calandertext">S</div>
    </div>
    <div class="day">
        <div class="calandertext">S</div>
    </div>
    <div class="date">
        <div class="calandertext"></div>
    </div>
    <div class="date day">
        <div class="calandertext">1</div>
    </div>
    <div class="date day">
        <div class="calandertext">2</div>
    </div>
    <div class="date day">
        <div class="calandertext">3</div>
    </div>
    <div class="date day">
        <div class="calandertext">4</div>
    </div>
    <div class="date day">
        <div class="calandertext">5</div>
    </div>
    <div class="date day">
        <div class="calandertext">6</div>
    </div>
    <div class="date day">
        <div class="calandertext">7</div>
    </div>
    <div class="date day">
        <div class="calandertext">8</div>
    </div>
    <div class="date day">
        <div class="calandertext">9</div>
    </div>
    <div class="date day">
        <div class="calandertext">10</div>
    </div>
    <div class="date day">
        <div class="calandertext">11</div>
    </div>
    <div class="date day">
        <div class="calandertext">12</div>
    </div>
    <div class="date day">
        <div class="calandertext">13</div>
    </div>
    <div class="date day">
        <div class="calandertext">14</div>
   ...

CSS

.calander {
    font-size: 0;
    width: 70%;
}
.day.date.active {
    border: 1px solid black !important;
}
.selected { background: red !important}

.month {
    position: relative;
    height: 80px;
    background-color: #FFE06B;
    width: 71.4265%;
    display: inline-block;
}
.day {
    position: relative;
    height: 50px;
    background-color: #4DC3F0;
    display: inline-block;
    width: 14.2853%;
}
.date {
    position: relative;
    height: 80px;
    background-color: #FFE06B;
    display: inline-block;
    width: 14.2853%;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.calandertext {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    top: 50%;
    text-align: center;
    line-height: 0;
    font-size: 40px;
}

JavaScript

var $date = $('.day.date').not(':has(:empty)');
var o = {
    38: 'up',
    40: 'bottom',
    37: 'prev',
    39: 'next'
}


$(document).on('keyup', function (e) {
    var dir = o[e.which];
    var $active = $('.active'),
        i = $date.index($active);
    if (e.which == 13) {
        $('.selected').removeClass('selected');
        $active.addClass('selected');
        return;
    }
    if (!$active.length) {
        $date.first().addClass('active');
        return;
    } else {
        if (dir === 'next' || dir === 'prev') {
            $active.removeClass('active')[dir]().addClass('active');
        } else {
            var p = dir === 'up' ? (i - 7) : (i + 7);
            $date.removeClass('active').eq(p).addClass('active');
        }
    }
})