![]() For the shuffling of the array, we will use the Fisher-Yates-Shuffle-Algorithm. The next step is to implement the shuffleAnswers, answer, and render methods. We save the question, correct answer, and an array of answers that we shuffle before we store it. This is how it should look like: class Settings export default Question Without an export-statement, we could not import the class in index.js. For that, we need the class with a constructor and a startQuiz-method plus the export-statement. Next up we create the skeleton for our settings-class. This will give an error because the file settings.js does not exist yet, so let’s go ahead and create it. We need to create a request to the Open Trivia DB API out of these three parameters to get the questions for the player’s playthrough.īefore we start creating our class we need to create an instance of it in the index.js like this: import Settings from ‘./quiz/settings.js’ new Settings() The goal of the settings-class is that the player can choose their category, difficulty, and the number of questions they want to answer. The first class we will be working on is Settings. ![]() Now we are ready to start working on our app. Go ahead and copy and paste the index.html and styles.css from these sources: vanilla-quiz $ mkdir quiz $ touch index.html index.js styles.css Let’s start by creating the folder structure like this: $ mkdir vanilla-quiz $ cd. This will be a straightforward Multiple Choice Quiz where you must choose one of the available answers to each of the multiple-choice questions. Therefore I will be providing the necessary HTML and CSS in this section. In this blog, we’ll create a Multiple Choice Quiz App Using JavaScript, HTML, and CSS. In this article, we will be focusing on the JavaScript part of the application. Prerequisitesīefore we can start implementing the quiz we need to create our folder structure and the HTML and CSS. If you are interested in the difference between these two paradigms go an check out my article “Functional Programming vs OOP in JavaScript”. We will be using the Open Trivia DB API for the questions so that we don’t have to come up with our questions.Īs you might already guess, because I am talking a lot about classes, we will use Object-Oriented-Programming to implement this quiz app and not Functional-Programming. The other one is the final-class that displays the last page with the player’s score. Furthermore, the quiz-class has two other components, first of an array of question-classes that hold the data of a question, display it, and checks if the answer was right or not.
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