JSFiddle - React, Tailwind, and code Playground

HTML

<div id="OuterDivOrBody">
    <input type="checkbox" id="checkbox1" />
    <label for="checkbox1">Checkbox label</label>
    <br />
    <br />The confirm result:
    <input type="text" id="textbox1" />
</div>

JavaScript

$('#checkbox1').on('change', function () {
    if (!this.checked) {
        var sure = confirm("Are you sure you want to uncheck it?");
        this.checked = !sure;
        $('#textbox1').val(sure.toString());
    }
});