added new exercice

exo_011/script.js

@@ -0,0 +1,29 @@
+console.log("hello world")
+
+
+// question 1.b
+
+let livre = {
+    nom: "JS the good part",
+    year: 2008,
+    price: 19.75,
+    publisher: "O reilly"
+};
+
+console.log(livre);
+
+function getAttribute(object, key, defaultValue){
+    if(Object.hasOwn(object, key)){
+        return object[key];
+    }
+    return defaultValue;
+}
+
+let key = "age"
+let object = {age: 100};
+let defaultValue = 0;
+console.log("2.a >> " + getAttribute(object, key, defaultValue)) // 100
+console.log("2.a >> " + getAttribute({name: "claudette"}, "name", 0)) // claudette
+
+console.log("2.a >> " + getAttribute({age: 100}, "name", "no name")) // no name
+console.log("2.a >> " + getAttribute({name: "claudette"}, "age", 0)) // 0