JavaScript(11)---Advanced Objects Introduction

Advanced Objects Introduction

• The this keyword references the calling object which provides access to the calling object’s properties.
• the ES6 shorthand is the method showed below at line 5

• the longhand format is the method showed below at line 4 and 5

One common convention is to place an underscore _ before the name of a property to mean that the property should not be altered. Here’s an example of using _ to prepend a property.

• Getters are methods that get and return the internal properties of an object. ( if, else etc.)

Notable advantages of using getter methods:

• Getters can perform an action on the data when getting a property.
• Getters can return different values using conditionals.
• In a getter, we can access the properties of the calling object using this.
• The functionality of our code is easier for other developers to understand.

• ES6 introduced some new shortcuts for assigning properties to variables known as destructuring.

EX : Use destructured assignment to create a const variable named functionality that extracts the functionality property of robot.

What I learned today? 

I learn a lot of new methods to finish the goal pf the lesson, especially the  ES6 shorthand form.

What I'll be doing tomorrow?

..Introduction to Classes in JavaScript..