https://alinma.com/sitecore%20modules/Web/ExperienceForms/scripts/form.init.js

1(function($) {
2    if (typeof $xa !== "undefined") {
3        /**
4         * jQuery ajax prefilter to avoid loading scripts again when form is wrapped in SXA
5         */
6        var loadOnceScriptsFilter = function (options, originalOptions, jqXHR) {
7            var form = $("form");
8            var isFormLoaded = form.length && typeof form.attr("data-sc-fxb") !== "undefined" && typeof $.fxbConditions !== "undefined";
9            if (isFormLoaded && options.url.indexOf("sitecore%20modules/Web/ExperienceForms/scripts/") !== -1) {
10                jqXHR.abort();
11            }
12        };
13
14        /**
15         * jQuery ajax success event handler to initialize tracking when form is wrapped in SXA
16         */
17        var initFormTracking = function (event, xhr, settings) {
18            if (settings.dataTypes.indexOf("html") >= 0 && typeof $.fxbFormTracker !== "undefined") {
19                $("form[data-sc-fxb]").track_fxbForms();
20            }
21        };
22
23        $xa.ajaxPrefilter("script", loadOnceScriptsFilter);
24        $xa(document)
25            .off("ajaxSuccess", initFormTracking)
26            .ajaxSuccess(initFormTracking);
27    }
28})(jQuery);