Vivienne Reay

Implicit Binding

The this keyword refers to the context in which a function is executed. Its value is determined by how a function is invoked.

var workshop = {
  teacher: "Kyle",
  ask(question) {
    console.log(this.teacher, question);
  },
};

workshop.ask("What is implicit binding?");
// Kyle What is implicit binding?

In this code snippet, this.teacher is part of an object method, and its value is implicitly set to the object on which the method is called. This is known as implicit binding.

• var workshop is an object with a property teacher and a method ask.
• The ask method takes a parameter question and logs the combination of this.teacher and the question parameter.
• workshop.ask("What is implicit binding?"); invokes the ask method on the workshop object.
• When a method is invoked, the this keyword inside the method refers to the object on which the method was called, which, in this case, is workshop.
• The console.log(this.teacher, question); logs the value of this.teacher (which is "Kyle" because it refers to the teacher property of the workshop object) along with the provided question parameter.