Data Layer

Question 1

What is a Data Layer?

Answer 1

Think of it as a virtual layer between the website and the tag management solution.

It allows you to store, process and pass data

Question 2

What do data layers enable you to do?

Answer 2

They allow you to store, process, and pass data.

Question 3

Technically a data layer is a JavaScript object. What does that mean?

Answer 3

JavaScript variables are container for data values and objects are variables too BUT objects can contain multiple values.

An object is a collection of properties and a property is an association between a name (or key) and a value.

The value can be a function as well - in this case, it’s known as a method.

Objects are comparable to objects in real life. In JavaScript, it’s a standalone entity with property and type. Properties define their characteristics.

While objects can be predefined in the browser, you can also create your own objects.

Question 4

What’s an example of a JavaScript object?

Answer 4

Object: car. Cars have properties like weight and color as well as methods like start and stop.

Properties:

car.name = Fiat
car.model = 500
car.weight = 850kg
car.color = white

Methods:

car.start()
car.drive()
car.brake()
car.stop()