JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="checkbox1" /> <br />
<input type="text" id="textbox1" />

JavaScript

$(document).ready(function() {
    //set initial state.
    $('#textbox1').val($(this).is(':checked'));
    
    $('#checkbox1').change(function() {
        $('#textbox1').val($(this).is(':checked'));
    });

    $('#checkbox1').click(function() {
        if (!$(this).is(':checked')) {
            var answer = confirm("Are you sure?");
            if (answer){
        
            }
            else{
        
            }
        }
    });
});