https://tenantapp.com.au/js/Components/ShowWhenBinder.js?v=Rkl3OtDqep_sh54vmfSmKeO1ko-6o_QxWEO9RdQigEc

1const ShowWhenCheckedBinder = (function () {
2
3    const selector = '[show-when-is-checked]';
4
5    function Bind() {
6        let items = GetIsCheckedItems();
7        $(items).each(function () {
8            let item = $(this);
9            let checkId = GetCheckId(item);
10            if (checkId == '')
11                return;
12
13            $(checkId).each(function () {
14                $(this).on('change', function () {
15                    if ($(this).is(':checked'))
16                        item.slideDown();
17                    else
18                        item.slideUp();
19                });
20
21                if ($(this).is(':checked'))
22                    item.show();
23                else
24                    item.hide();
25            });
26        });
27    }
28
29    function GetIsCheckedItems() {
30        return $(selector);
31    }
32    function GetCheckId(item) {
33        return $(item).attr('show-when-is-checked') || '';
34    }
35
36    return {
37        Bind: Bind
38    }
39
40})();