Const need to be const but I need to change the value 'died'

Question

Const need to be const but I need to change the value died.

const person = {
    name: 'Bowie',
    died: 2012
}

person = {
    name: 'Bowie',
    died: 2016
}

console.log(person);

Answer 1

Whilst you cannot replace the value of a const variable, if its value is an object you can still by default change the properties within that object.

const person = {
    name: 'Bowie',
    died: 2012
}

person.died = 2016;

console.log(person);

The exceptions are if the whole Object has been "frozen", or if the specific property has been set as unwritable.

Answer 2

Try this one: Here you can not assign a new object to person as it is a const but you can edit the existing object.

The 'person' variable here holds the reference to the object and if you change the contents of the object then you are not changing the reference.

Hence no error with const like this.

person.died = 2016

Answer 3

change it like the following

person['died'] = 1976

Answer 4

The const declaration creates a read-only reference to a value. It does not mean the value it holds is immutable, just that the variable identifier cannot be reassigned. For instance, in the case where the content is an object, this means the object's contents (e.g., its parameters) can be altered .

Try this code:

const person = {
    name: 'Bowie',
    died: 2012
}

person.died= 2016;

console.log(person);