JSFiddle - React, Tailwind, and code Playground

by nobuts

HTML

<input id="boxid" type="checkbox">&nbsp;
<label for="boxid"> เดินทางจากภูเก็ต</label>
    <br />Adult : <span id="adult">3,500</span>
    <br />Child : <span id="child">3,000</span>

JavaScript

$('#boxid').click(function () {
    if ($(this).is(':checked')) {
        $(this).siblings('#adult').html('3,700');
        $(this).siblings('#child').html('3,200');
    } else {
        $(this).siblings('#adult').html('3,500');
        $(this).siblings('#child').html('3,000');
    }
});