CODEWITHSUNDEEP
javascriptjqueryjquery-ui-datepicker
Ant
Ant

Reputation: 131

jQuery datepicker to count days from today

I have this code, it counts days between two dates with jqueryUI datepicker.

How can I get rid of the first input entirely and just count days from today?

function showDays() {
    var start = $('#arr_date').datepicker('getDate');
    var end = $('#dep_date').datepicker('getDate');
    if (!start || !end) return;
    var days = (end - start) / 1000 / 60 / 60 / 24;
    $('#num_nights').val(days);
}

$("#arr_date").datepicker({
    dateFormat: 'dd-mm-yy',
    onSelect: showDays
});
$("#dep_date").datepicker({
    dateFormat: 'dd-mm-yy',
    onSelect: showDays
});
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>

<input type="text" id="arr_date">
<input type="text" id="dep_date">
<input type="text" id="num_nights" disabled>

Upvotes: 1

Views: 431

Answers (1)

Anurag Srivastava
Anurag Srivastava

Reputation: 14413

Use new Date() and set its hours, minutes, seconds to 0 to match with the datepicker format. Also, use Math.round() on the difference.

Then you can calculate as below:

function showDays() {
    var start = new Date()
    start.setHours(0);
    start.setMinutes(0);
    start.setSeconds(0);
    
    var end = $('#dep_date').datepicker('getDate');
    if (!start || !end) return;
    var days = Math.round((end - start) / 1000 / 60 / 60 / 24);
    $('#num_nights').val(days);
}

$("#dep_date").datepicker({
    dateFormat: 'dd-mm-yy',
    onSelect: showDays
});
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>

<input type="text" id="dep_date">
<input type="text" id="num_nights" disabled>

Upvotes: 1

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