JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="toggle" checked />
            <span>some text</span>


<input type="submit" name="sendNewSms" class="inputButton" id="sendNewSms" value=" Send " />

JavaScript

$('#toggle').click(function () {
    //check if checkbox is checked
    if ($(this).is(':checked')) {
        
        $('#sendNewSms').removeAttr('disabled'); //enable input
        
    } else {
        $('#sendNewSms').attr('disabled', true); //disable input
    }
});