https://www.bnf.fr/modules/custom/clear_field_custom/js/clear-field-custom.js?v=1.x

1(function ($, Drupal, drupalSettings) {
2  'use strict';
3
4  Drupal.behaviors.clear_field_custom = {
5    attach: function (context, settings) {
6      var form_text_class = drupalSettings.clear_field_custom.form_text_class;
7      var span_class = '.' + drupalSettings.clear_field_custom.span_class;
8      var classes = '';
9
10      $.map(form_text_class, function (value, index) {
11        if (form_text_class.length && (form_text_class.length - 1) === index) {
12          classes = classes + 'input.' + value;
13        }
14        if (form_text_class.length && (form_text_class.length - 1) !== index) {
15          classes = classes + 'input.' + value + ', ';
16        } 
17      });
18
19      /*$(classes, context).each(function () {
20        if ($(this).val()) {
21          var parent = $(this).parent().once();
22          parent.append(drupalSettings.clear_field_custom.close_button); 
23        }
24      });*/
25
26      $("input[name^='field_daterange1'][name$='[end_value][time]']").each(function( index ) {
27        var parent = $(this).parent().once();
28        if (parent.find('input').val()!="" || parent.parent().find('input').val()!="" || parent.parent().parent().find('input').val()!="" ||  parent.parent().parent().parent().find('input').val()!="") {
29            parent.append(drupalSettings.clear_field_custom.close_button); // si un seul des champs du date range est rempli on affiche le bouton
30        }
31      });
32     
33      $(document).on('click', span_class, function (e) {
34        e.preventDefault();
35        $(this).parent().find('input').val('');  // heure de fin
36        $(this).parent().parent().find('input').val('');  // date de fin
37        $(this).parent().parent().parent().find('input').val(''); //heure de debut    
38        $(this).parent().parent().parent().parent().find('input').val(''); // date de debut 
39        $(this).remove();
40      });
41
42      $(classes, context).change(function () {
43        var parent = $(this).parent();
44        if ($(this).val() && !$(this).parent().find('.clear-field').length) {
45          parent.append(drupalSettings.clear_field_custom.close_button);
46        }
47        else {
48          if (!$(this).val()) {
49            parent.find('.clear-field').remove();
50          }
51        }
52      });
53    }
54  };
55
56})(jQuery, Drupal, drupalSettings);