public/subjects/alter-ego

Alter Ego 🎭

You can change your objects in multiple ways:

• modify values of properties
• add new properties
• delete properties

Modifying objects

Let's declare an object

// we create our object with 2 properties
const user = {
  points: 0,
  code: '75lai78wn',
}

Adding a new property

user.name = 'Martin' // we add a name to our user

The syntax is very similar to modifying a variable, the only difference is we start from our user and use the . (property accessor operator)

Changing a property value

user.points = 10 // set points to 10 points

The syntax is the same, if the property already exist, its value will be changed !

Removing a property

user.code = undefined // remove the value from a property

The trick here is to set its value to undefined as this will clear the value of our property

Instructions

Modify the provided alterEgo variable:

• add a self property with the string value 'altered'.
• add a fullName property that is the joined value of the firstName and the lastName with a space in between.
• add 10 to it's points property