Node.js 12: Private Class Fields

Javascript allows us to declare fields inside the class. We can access its own fields or properties by creating an instance of a class.

Example:

 Class Devreto {
   postId = 1;
}
const devreto = new Devreto();
devreto.postId ; //1

Class Devreto {

postId = 1;

}

const devreto = new Devreto();

devreto.postId ; //1

As specified as of 2019, We can now declare private fields using #. Using private fields the implementation details of a class are kept internal and are not exposed to the world.

Example:

Class Devreto {
   #postId = 1;
}
const devreto = new Devreto();
devreto.postId ;  //undefined

Class Devreto {

#postId = 1;

}

const devreto = new Devreto();

devreto.postId ; //undefined

I hope you like this Post, Please feel free to comment below, your suggestion and problems if you face - we are here to solve your problems.