Vivienne Reay

Classes

Classes are a way to create objects and implement object-oriented programming concepts. Classes provide a convenient syntax for creating objects and defining their behavior. When using classes, the this keyword is commonly used to refer to the current instance of the class within its methods.

class Workshop {
  constructor(teacher) {
    this.teacher = teacher;
  }
  ask(question) {
    console.log(this.teacher, question);
  }
}

var deepJS = new Workshop("Kyle");
var reactJS = new Workshop("Suzy");

deepJS.ask("Is 'class' a class?");
// Kyle Is 'class' a class?

reactJS.ask("Is this class OK?");
// Suzy Is this class OK?

This code defines a class called Workshop.

• The Workshop class is defined with a constructor method and an ask method.
• The constructor method is a special method called when a new instance of the class is created. It initialises the teacher property of the instance with the value passed as an argument.
• The ask method is a custom method that logs a message to the console using the teacher property and a provided question.
• Two instances of the Workshop class, deepJS and reactJS, are created using the new keyword. Each instance is associated with a specific teacher ("Kyle" for deepJS and "Suzy" for reactJS).
• The ask method is called on each instance, passing a specific question.
• Each call to ask logs a message to the console, combining the teacher's name (this.teacher) and the question passed to the method.

The usage of the class demonstrates how different instances of the same class can have different property values while sharing the same methods.