wip: add more questions

src/data/question-groups/javascript/content/prevent-default.md

@@ -0,0 +1,10 @@
+The `event.preventDefault()` method is used to prevent the default action of an event. For example, when you click on a link, the default action is to navigate to the link's URL. But, if you want to prevent the navigation, you can use `event.preventDefault()` method.
+
+```js
+const link = document.querySelector('a');
+
+link.addEventListener('click', (event) => {
+  event.preventDefault();
+  console.log('Clicked on link!');
+});
+```

src/data/question-groups/javascript/javascript.md

@@ -168,4 +168,14 @@ questions:
     topics:
       - 'Core'
       - 'Intermediate'
+  - question: Is Java and JavaScript the same?
+    answer: No, Java and JavaScript are distinct languages. Their similarity in name is coincidental, much like `car` and `carpet`. Java is often used for backend and mobile apps, while JavaScript powers web interactivity and backend.
+    topics:
+      - 'Core'
+      - 'Beginner'
+  - question: What is `preventDefault()` method in JavaScript?
+    answer: prevent-default.md
+    topics:
+      - 'Core'
+      - 'Intermediate'
 ---