JSFiddle - React, Tailwind, and code Playground

HTML

<div class="left booktext">ARRIVAL
    <div class="bookborder">
        <input type="hidden" name="checkin" value="2014-03-05" />
            <input type="text" class="bookfields hasDatepicker" style="width:65px;" id="checkin-select" placeholder="dd/mm/yyyy" />
    </div>
</div>

JavaScript

$('.left').contents().first().replaceWith("New Text");