How to create a custom AngularJS component for interactive quizzes?
13/03/2024
•
5
min
Before creating a custom AngularJS component for interactive quizzes, you will need to have basic knowledge about HTML, CSS, and most importantly AngularJS.
Let's say, for example, we want to create a simple multiple-choice quiz application.
Step 1: Set up your AngularJS Application
Ask your specific question in Mate AI
In Mate you can connect your project, ask questions about your repository, and use AI Agent to solve programming tasks
Step 1.1: Create 'index.html' file and include AngularJS library in the head section.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.2/angular.min.js"></script>
</head>
<body>
</body>
</html>
Step 2: Include 'ng-app' and 'ng-controller' Directives
Step 2.1: Inside the body of 'index.html', include 'ng-app' and 'ng-controller' directives. 'ng-app' directive tells AngularJS that this is the root element of the AngularJS application and 'ng-controller' directive attaches a controller class to the view.
<body ng-app="quizApp" ng-controller="quizCtrl">
</body>
Step 3: Set up the Quiz Controller
Step 3.1: In a new 'quiz.js' file, let's write code to create a new AngularJS module and a controller. The following code will initialize AngularJS Module and AngularJS Controller. Include this file in your 'index.html'.
var app = angular.module('quizApp', []);
app.controller('quizCtrl', function ($scope) {
});
Include the file in 'index.html':
<script src="quiz.js"></script>
Step 4: Create the Quiz Model
Inside the quiz controller, define a model for your quiz. This normally should come from a backend service but for simplicity we'll define it here.
$scope.quiz = [
{
question: "What is the capital of England?",
options: ["Madrid", "Rome", "Paris", "London"],
correctAnswer: 3
},
// Add many more questions as you want in this format.
];
Step 5: Display the Quiz
Now, use ng-repeat directive of AngularJS to display question and its options from the model on the HTML page.
<div>
<div ng-repeat="q in quiz">
<p>{{$index + 1}}. {{q.question}}</p>
<div ng-repeat="(index, choice) in q.options">
<input type="radio" name="question{{$parent.$index}}" ng-value="{{index}}" ng-model="q.selected">{{choice}}
</div>
</div>
</div>
Step 6: Checking Answers
You could add a button that checks the answer. The checkAnswer function should be defined in your controller.
<button ng-click="checkAnswers()">Check Answers</button>
And in your JavaScript file, you could add:
$scope.checkAnswers = function() {
$scope.results=[];
for(var i in $scope.quiz) {
if($scope.quiz[i].selected == "" || $scope.quiz[i].selected == null){
$scope.results[i]="No input!";
}
else if($scope.quiz[i].selected == $scope.quiz[i].correctAnswer){
$scope.results[i]="Correct!";
}
else {
$scope.results[i]="Incorrect!";
}
}
}
With AngularJS ng-repeat, ng-model and ng-click directives, this dynamic and interactive quiz application can easily be developed. This is just a simple tutorial and can be enhanced based on requirements. You can also implement many features like time-bound quiz, score counting and so on based on your needs.
AI agent for developers
Boost your productivity with Mate:
easily connect your project, generate code, and debug smarter - all powered by AI.
Do you want to solve problems like this faster? Download now for free.