gistfile1.js

// jQuery's .trigger() doesn't fire handlers bound with the native .addEventListener() - here's a workaround for modern browsers (IE 9+)

var $el = $('.my-el'),
    e;

try {

    e = new Event('change');

} catch (unused) {

    // Initialize event for IE
    e = document.createEvent('Event');
    e.initEvent('change', true, true);

}

textBox.get(0).dispatchEvent(e);