I have a http request that gets this Json object from a nosql database:

let jsonBody = {

    birthday : 1997,

    firstname: 'foo',

    lastname:'bar'

}

Then I want to load this information into the Student model:

class Student{

    constructor(){



    }



    getFullname(){

        return this.lastname+' '+this.firstname

    }

    getApproxAge(){

        return 2018- this.birthday

    }

}

Normally, I would add this method to this class:

fromJson(json){

    this.studentId = json.studentId;

    this.birthday = json.birthday;

    this.firstname = json.firstname;

    this.lastname = json.lastname;

}

I would use it as follow:

let student = new Student()

student.fromJson(jsonBody)

console.log(student.getFullname())

console.log(student.getApproxAge())

This works fine but my problem is I have: 100 proprieties in reality. Will I have to write all proprities one by one in the fromJson method?

And also, if a propriety name has change, let's say: lastname became LastName, I will have to fix it?

Is there a simpler way to just assign these values to the object student dynamically but keep all of its methods??

Something like this:

fromJson(json){

    this = Object.assign(this, json) //THIS IS NOT WORKING

}