https://www.venueswest.wa.gov.au/Frontend-Assembly/Telerik.Sitefin…WestCorporateResources&v=MTQuNC44MTUzLjA%3d

1(function ($) {
2    $(function () {
3        $('button[type="submit"]').each(function () {
4            $(this).closest('form').submit(function (ev) {
5                if (!ev.isDefaultPrevented()) {
6                    var button = $(this).find('button[type="submit"]');
7
8                    // If the submit button is not visible and there is a page break button next that is visible 
9                    // we asume that we are in case with multi step form, where the enter button is hit and the form is submited, 
10                    // so that we need to click next instead of submitting the form.
11                    var isSubmitButtonVisible = $(button).is(":visible");
12                    var firstPageBreak = $(ev.target).find('[data-sf-btn-role="next"]:visible')[0];
13                    if (!isSubmitButtonVisible && firstPageBreak) {
14                        firstPageBreak.click();
15                        ev.preventDefault();
16
17                        return;
18                    }
19
20                    button.prop('disabled', true);
21
22                    //we need first to validate all inputs which require server side validation (cannot be validated client-side)
23                    //before the form is submitted and submit the form only if all are valid - e.g. captcha is such control
24                    var allInputs = ev.target.querySelectorAll('input, textarea', 'select');
25                    var widgetValidators = [];
26
27                    for (var i = 0; i < allInputs.length; i++) {
28                        if ($(allInputs[i]).data('widget-validator')) {
29                            widgetValidators.push($(allInputs[i]).data('widget-validator'));
30                        }
31                    }
32
33                    if (widgetValidators.length) {
34                        ev.preventDefault();
35                        var deferreds = [];
36                        for (i = 0; i < widgetValidators.length; i++) {
37                            deferreds.push(widgetValidators[i]());
38                        }
39
40                        $.when.apply($, deferreds).done(function () {
41                            for (var i = 0; i < widgetValidators.length; i++) {
42                                if (!arguments[i]) {
43                                    return false;
44                                }
45                            }
46
47                            if (ev.target.checkValidity()) {
48                                ev.target.submit();
49                            }
50                        }).always(function () {
51                            button.prop('disabled', false);
52                        });
53                    }
54                }
55            });
56        });
57    });
58}(jQuery));