diff --git a/js/element.js b/js/element.js
index 764e429..867a3a3 100644
--- a/js/element.js
+++ b/js/element.js
@@ -1,11 +1,15 @@
 class element{
-    constructor(tag,id) {
+    constructor(techno,tag) {
         this.tag = tag
-        this.id = id
+        this.techno = techno
     }
 
-    afficher(){
-
+    charger_depuis_bdd(){
+        fetch("../bdd/arbre.json").then((data,r)=>{
+            let props = data["technologies"][this.techno][this.tag]
+            this.cout = props.cout
+            this.boost = props.boost
+        })
     }
 
 }
\ No newline at end of file