Calculates the difference (in days) between two dates.

const getDaysDiffBetweenDates = (dateInitial, dateFinal) =>
 (dateFinal - dateInitial) / (1000 * 3600 * 24);

getDaysDiffBetweenDates(new Date('2017-12-13'), new Date('2017-12-22')); // 9

Calculates the difference (in days) between two dates.
<ul>
<li>Subtract the two <a target="_blank" rel="nofollow noopener noreferrer" href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date" target="_blank" rel="noopener noreferrer"><code class="notranslate">Date</code></a> objects and divide by the number of milliseconds in a day to get the difference (in days) between them.</li>
</ul>

Date difference in days

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