JSFiddle - React, Tailwind, and code Playground

HTML

<input name="ctl1189" type="checkbox" id="chkTicket_189310" class="chkTicket" value="x" checked>

<input name="ctl1190" type="checkbox" id="chkTicket_189311" class="chkTicket" value="y">

<input name="ctl1191" type="checkbox" id="chkTicket_189312" class="chkTicket" value="z" checked>

JavaScript

var checkedCheckboxes = $('.chkTicket:checked'),
    results = {};

checkedCheckboxes.each(function () {
    var key = $(this).attr('id').split('_')[1];
    results[key] = $(this).val();
});

function alertResults(results) {
    var text = '', sep = '';
    $.each(results, function (key, value) {
        text += sep + key + '=' + value;
        sep = ',';
    });
    alert(text);
}

alertResults(results);
//console.log(results);