expressjsHow can I create a quiz using Express.js?

Creating a quiz using Express.js is a great way to add interactivity to a website. Here is an example of how to create a simple quiz using Express.js:

// Require Express
const express = require('express');

// Create an Express application
const app = express();

// Set a route for the quiz
app.get('/quiz', (req, res) => {
  // Render the quiz page
  res.render('quiz');
});

// Set a route for the quiz results
app.post('/quiz-results', (req, res) => {
  // Get the user's answers
  const userAnswers = req.body;

  // Calculate the user's score
  let score = 0;
  // Loop through the user's answers and increment the score
  // for each correct answer
  for (let answer of userAnswers) {
    if (answer === 'correct') {
      score++;
    }
  }

  // Render the results page
  res.render('quiz-results', {score});
});

// Start the server
app.listen(3000);

This example code creates an Express application with two routes. The first route /quiz renders the quiz page and the second route /quiz-results calculates the user's score and renders the results page.

Code explanation

1. Require Express: const express = require('express');
2. Create an Express application: const app = express();
3. Set a route for the quiz: app.get('/quiz', (req, res) => { ... });
4. Set a route for the quiz results: app.post('/quiz-results', (req, res) => { ... });
5. Get the user's answers: const userAnswers = req.body;
6. Calculate the user's score: let score = 0; for (let answer of userAnswers) { ... }
7. Render the results page: res.render('quiz-results', {score});
8. Start the server: app.listen(3000);

Helpful links

• Express.js Documentation
• Node.js Documentation

Edit this code on GitHub