diff --git a/app/static/js/assiduites.js b/app/static/js/assiduites.js
index b6339b32..c4b78ac5 100644
--- a/app/static/js/assiduites.js
+++ b/app/static/js/assiduites.js
@@ -1722,3 +1722,71 @@ function getCurrentAssiduiteModuleImplId() {
   }
   return "";
 }
+
+function getCurrentAssiduite(etudid) {
+  const field = document.querySelector(
+    `fieldset.btns_field.single[etudid='${etudid}']`
+  );
+
+  if (!field) return null;
+
+  const assiduite_id = parseInt(field.getAttribute("assiduite_id"));
+  const type = field.getAttribute("type");
+
+  if (type == "edition") {
+    let assi = null;
+    assiduites[etudid].forEach((a) => {
+      if (a.assiduite_id === assiduite_id) {
+        assi = a;
+      }
+    });
+    return assi;
+  } else {
+    return null;
+  }
+}
+
+// <<== Gestion de la justification ==>>
+
+function getJustificatifFromPeriod(date) {
+  let justifs = [];
+  sync_get(
+    getUrl() +
+      `/api/justificatifs/${etudid}/query?date_debut=${date.deb.format()}&date_fin=${date.fin.format()}`,
+    (data) => {
+      justifs = data;
+    }
+  );
+
+  return justifs;
+}
+
+function updateJustifieButton(isJustified, isDisabled = true) {
+  const btn = document.getElementById("justif-rapide");
+  if (isJustified) {
+    btn.classList.add("justifie");
+  } else {
+    btn.classList.remove("justifie");
+  }
+
+  if (isDisabled) {
+    btn.setAttribute("disabled", "true");
+  } else {
+    btn.removeAttribute("disabled");
+  }
+}
+
+function fastJustify(assiduite) {
+  const period = {
+    deb: new moment.tz(assiduite.date_debut, TIMEZONE),
+    fin: new moment.tz(assiduite.date_fin, TIMEZONE),
+  };
+  const justifs = getJustificatifFromPeriod(period);
+
+  if (justifs.length > 0) {
+    //modifier l'assiduité
+  } else {
+    //créer un nouveau justificatif
+    // Afficher prompt -> demander raison et état
+  }
+}
diff --git a/app/templates/assiduites/moduleimpl_dynamic_selector.j2 b/app/templates/assiduites/moduleimpl_dynamic_selector.j2
index 263b2d64..3fcf07d5 100644
--- a/app/templates/assiduites/moduleimpl_dynamic_selector.j2
+++ b/app/templates/assiduites/moduleimpl_dynamic_selector.j2
@@ -98,9 +98,7 @@
     }
 
     function updateSelectedSelect(moduleimpl_id) {
-        const select = document.getElementById('moduleimpl_select');
-        select.querySelector("option[selected]").removeAttribute("selected");
-        select.querySelector(`option[value="${moduleimpl_id}"]`).setAttribute('selected', 'true');
+        document.getElementById('moduleimpl_select').value = moduleimpl_id;
     }
 
 
diff --git a/app/templates/assiduites/signal_assiduites_etud.j2 b/app/templates/assiduites/signal_assiduites_etud.j2
index e697a288..00b4bd21 100644
--- a/app/templates/assiduites/signal_assiduites_etud.j2
+++ b/app/templates/assiduites/signal_assiduites_etud.j2
@@ -40,7 +40,11 @@
 
     {% include "assiduites/timeline.j2" %}
 
-    {% include "assiduites/moduleimpl_dynamic_selector.j2" %}
+
+    <div>
+        {% include "assiduites/moduleimpl_dynamic_selector.j2" %}
+        <button class="btn" onclick="justify()" disabled id="justif-rapide">Justifier</button>
+    </div>
 
     <div class="btn_group">
         <button class="btn" onclick="setPeriodValues(8,18)">Journée</button>
@@ -75,6 +79,7 @@
         getSingleEtud({{ sco.etud.id }});
         actualizeEtud({{ sco.etud.id }});
         updateSelect()
+
     </script>
 
 
@@ -82,6 +87,11 @@
         .rouge {
             color: crimson;
         }
+
+        .justifie {
+            background-color: rgb(104, 104, 252);
+            color: whitesmoke;
+        }
     </style>
 
     {% endblock %}