prepare for merging doc into mono-repository

docs/source/development/user-interface/js-functions/show_hide.js

@@ -0,0 +1,39 @@
+import { ShowHide } from 'ShowHide/show_hide.js';
+
+var 
+    div_accompagnement = document.getElementById("form_accompagnement"),
+    div_accompagnement_comment = document.getElementById("form_accompagnement_comment"),
+    div_caf_id = document.getElementById("cafId"),
+    div_caf_inscription_date = document.getElementById("cafInscriptionDate"),
+    ;
+
+// let show/hide the div_accompagnement_comment if the input with value `'autre'` is checked
+new ShowHide({
+    "froms": [div_accompagnement],
+    "test": function(froms, event) { 
+        for (let el of froms.values()) {
+            for (let input of el.querySelectorAll('input').values()) {
+                if (input.value === 'autre') {
+                    return input.checked;
+                }
+            }
+        }
+        
+        return false;
+    },
+    "container": [div_accompagnement_comment]
+});
+
+// let show the date input only if the the id is filled 
+new ShowHide({
+    froms: [ div_caf_id ],
+    test: function(froms, event) {
+        for (let el of froms.values()) {
+            return el.querySelector("input").value !== "";
+        }
+    },
+    container: [ div_caf_inscription_date ],
+    // using this option, we use the event `input` instead of `change`
+    event_name: 'input'
+});
+