extend for lang

js/JokeService.js

@@ -1,19 +1,21 @@
 class JokeService {
 
-    constructor(category = 'programming') {
-        this.category = category;
+    constructor(category = ['programming', 'coding', 'development'], lang = 'en') {
+        this.category = Array.isArray(category) ? category : [category];
+        this.lang = lang;
         this.apiBaseUrl = 'https://v2.jokeapi.dev/joke/'
     }
 
     setCategory(category) {
-        this.category = category;
+        this.category = Array.isArray(category) ? category : [category];
     }
 
     tell() {
         let service = this;
-        axios.get(
-            service.apiBaseUrl + service.category
-        ).then((response) => {
+
+        axios.get(service.apiBaseUrl + getRandomItem(service.category), {
+            lang: service.lang
+        }).then((response) => {
             if (response.data.error === false) {
                 service.show(response.data);
             }
@@ -44,3 +46,7 @@ function showNotification(text) {
         // alert(text);
     }
 }
+
+function getRandomItem(items) {
+    return items[Math.floor(Math.random()*items.length)];
+}