https://www.renardsdumanet.fr/media/civicrm/ext/org.civicrm.module.cividiscount/js/main.js?r=h9s7Vfr_FR

1CRM.$(function($) {
2  if ($('#discountcode').length > 0) {
3    skipPaymentMethod();
4    function showHidePayment(flag) {
5      $('.payment_options-group, div.payment_processor-section, #payment_information').toggle(!flag);
6      if (flag) {
7        // also unset selected payment methods
8        $('input[name="payment_processor"]').prop('checked', false);
9      }
10    }
11
12    /**
13     * Function copied from templates/CRM/Price/Form/Calculate.tpl - calculateTotalFee() (in case it gets changed somewhere along the way)
14     * This Calculates the total fee on CiviCRM
15     */
16    function discountCalculateTotalFee() {
17      var totalFee = 0;
18      $('#priceset [price]').each(function () {
19        totalFee = totalFee + $(this).data('line_raw_total');
20      });
21
22      return totalFee;
23    }
24
25    function skipPaymentMethod() {
26      var flag = false;
27      $('.price-set-option-content input').each( function(){
28        if (!$(this)[0].hasAttribute("data-amount")) return;
29        currentTotal = $(this).attr('data-amount').replace(/[^\/\d]/g,'');
30        if ($(this).is(':checked')) {
31          if (currentTotal == 0 ) {
32            flag = true;
33          }
34          else {
35            flag = false;
36            return false;
37          }
38        }
39      });
40      $('.price-set-option-content input').change( function () {
41        if (discountCalculateTotalFee() == 0) {
42          flag = true;
43        } else {
44          flag = false;
45        }
46        showHidePayment(flag);
47      });
48      showHidePayment(flag);
49    }
50  }
51});