learning-jsdp/ch07/prototype_constructor.html at main · addyosmani/learning-jsdp · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Interactive Car Prototype Example</title>
</head>
<body>
  <h1>Interactive Car Prototype Example</h1>
  <form id="car-form">
    <label for="model">Enter car model:</label>
    <input type="text" id="model" name="model" required>
    <label for="year">Enter car year:</label>
    <input type="number" id="year" name="year" required>
    <label for="miles">Enter car mileage:</label>
    <input type="number" id="miles" name="miles" required>
    <button type="submit">Add Car</button>
  </form>
  <div id="output"></div>

  <script>
    class Car {
      constructor(model, year, miles) {
        this.model = model;
        this.year = year;
        this.miles = miles;
      }
    }

    Car.prototype.toString = function() {
      return `${this.model} has done ${this.miles} miles`;
    };

    const form = document.getElementById('car-form');
    const output = document.getElementById('output');

    form.addEventListener('submit', (e) => {
      e.preventDefault();
      const model = document.getElementById('model').value;
      const year = parseInt(document.getElementById('year').value);
      const miles = parseInt(document.getElementById('miles').value);

      const car = new Car(model, year, miles);
      const carInfo = car.toString();

      const carInfoElement = document.createElement('p');
      carInfoElement.textContent = carInfo;
      output.appendChild(carInfoElement);

      console.log(carInfo);
    });
  </script>
</body>
</html>