Change Jquery is being triggered without change

Question

Hello,

I have a JS code that gives the value for a price slider, and in this JS has a change that is being triggered and inside the change has a Rigger that triggers another part of the JS that does the post and redirects the page but the change is being triggered without any change and the page is reloading all Ra, code:

/*slider jQuery UI*/
(function () {   
    var pdtPrice = $('form[name="workcontrol_filter"]').find('input[name="pdt_price"]');
    var pdtMinPrice = parseInt(pdtPrice.attr('data-min'));
    var pdtMaxPrice = parseInt(pdtPrice.attr('data-max'));

    var pdtStepPrice = parseInt(pdtPrice.attr('data-step'));
    var pdtRangePrice = parseInt(pdtPrice.attr('data-range'));

    $("#slider_price").slider({
        range: true,
        min: pdtMinPrice,
        max: pdtMaxPrice,
        values: [pdtStepPrice, pdtRangePrice],
        slide: function (event, ui) {
            $("#amount").val("R$ " + ui.values[0] + " - R$ " + ui.values[1]);
        },
        // Esse change está sendo acionado sem ter alteração nenhuma no slider_price
        change: function (event, ui) {
            pdtPrice.val(ui.values[0] + ',' + ui.values[1]);
            //alert('FOI ACIONADO');
            $('form[name="workcontrol_filter"]').trigger('change');
        }
    });

    if (pdtMinPrice === pdtMaxPrice) {
        $("#slider_price").slider("option", "disabled", true);
    }

    $("#amount").val("R$ " + $("#slider_price").slider("values", 0) + " - R$ " + $("#slider_price").slider("values", 1));
})();

HTML:

<div id="slider_price"></div>

Code that Trigger triggers:

/*change form*/
$('html').on('change', 'form[name="workcontrol_filter"]', function () {
    $.post(action, $(this).serialize(), function (data) {
        $('html, body').animate({scrollTop: 0}, 200, function () {
            window.location.href = BASE + '/' + data.redirect;
        });
    }, 'json');
});

Then someone knows why it happens?
And I don’t know if it matters, but I use Twig for html.