diff --git a/index.html b/index.html
index be6da78c5e9ec9f23846a724d7820f71b1816897..ff93854bcc3a18ce79f8bfd9acf1906426fcc556 100644
--- a/index.html
+++ b/index.html
@@ -32,16 +32,30 @@
 </div>
 
 <!-- include prototypes here -->
+<script src="js/car.js"></script>
+<script src="js/extra.js"></script>
 
 <script>
 
     function generateCar(image, make, model, description, price, category, year, mileage, extras) {
-        //Create an array of Extra instances based on Extras names and prices
+        // Create an array of Extra instances based on Extras names and prices
         // Create a new Car instance
+        return new Car(image, make, model, description, price, category, year, mileage, extras);
     }
 
     function showHideExtra(btn,elt,car) {
-
+        let div = document.createElement("div");
+        if (btn.textContent == "+") {
+            btn.textContent = "-";
+            car.generateExtras(elt);
+        }
+        else {
+            btn.textContent = "+";
+            let enfantsDiv = Array.from(elt.children);
+            enfantsDiv.forEach(ul => {
+                ul.remove();
+            });
+        }
     }
 
 
diff --git a/js/car.js b/js/car.js
new file mode 100644
index 0000000000000000000000000000000000000000..5c4c5233728a157c846498e7681fd80a4879deab
--- /dev/null
+++ b/js/car.js
@@ -0,0 +1,29 @@
+function Car(image, make, model, description, price, category, year, mileage, extras) {
+	this.image = image;
+	this.make = make;
+	this.model = model;
+	this.description = description;
+	this.price = price;
+	this.category = category;
+	this.year = year;
+	this.mileage = mileage;
+	this.extras = extras;
+}
+
+Car.prototype.generateImage = function (elt) {
+	let img = document.createElement("img");
+	img.src = this.image;
+	img.alt = this.make + "" + this.model;
+	img.classList.add("card-img-top");
+	elt.appendChild(img);
+}
+
+Car.prototype.generateExtras = function (elt) {
+	let ul = document.createElement("ul");
+	this.extras.forEach(extra => {
+		let li = document.createElement("li");
+		li.textContent = extra.name + " : " + extra.price + " €";
+		ul.appendChild(li);
+	});
+	elt.appendChild(ul);
+} 
\ No newline at end of file
diff --git a/js/extra.js b/js/extra.js
new file mode 100644
index 0000000000000000000000000000000000000000..cd4ce46b79b00e211b99b017ff300e2cfc073b52
--- /dev/null
+++ b/js/extra.js
@@ -0,0 +1,4 @@
+function Extra(name, price) {
+	this.name = name;
+	this.price = price;
+}
\ No newline at end of file