JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="accept" />

JavaScript

var checked = $('#accept').attr('checked');
if (checked) {
    permission = "Y";
} else {
    permission = "N";
};
var track = {
    version: 123,
    id: 123456789,
    order: {
        sv1: 'Y',
        sv2: 'N',
        sv3: 'Name',
        sv4: permission,
        orderid: '123xyz'
    }
};
console.log(track);

$('#accept').click(function () {
      if (checked) {
      permission = "Y";
      } else {
          permission = "N";
      };
});