Question 305952 in Javascript Question posted in
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Javascript – Create new object dynamically

Is there a way of adding an object without having to declare a const?

function Car (make, color) {
    this.make = make,
    this.color = color,  
    this.greet = function () {
        console.log(`The make is ${this.make} and color is ${this.color}`);
  };
}

const newObject = "Toyota"

const ford = new Car("Ford", "blue")
ford.greet();``

const vauxhall = new Car("Vauxhall", "green")
vauxhall.greet();

I thought I may be able to have:

const newObject = "Toyota"

Then add Toyota in place of ford or vauxhall.

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2

Answers


  1. 0

    There are 4 ways of creating objects:

    //Object Literal
let obj1 = {car: "Toyota"}

//Using Object Inbuilt Method
let obj2 = new Object();
obj2.car = "Toyota";

//Using Object.Create
let obj3 = Object.create();
obj3.car = "Toyota";

//Using a Constructor
function Car(name){
 this.car = name;
}
let obj4 = new Car("Toyota");

    There is NO 5th way – and I don’t think you can on the fly create any object you want. The best you close in is — Object Literal.

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  2. 0

    You can create a Car class and define the setter method of "make" and "color".

    class Car {
        constructor(make, color) {
            this.make = make;
            this.color = color;
        }
    
        set setMake(new_make) {
            this.make = new_make;
        }
        set setColor(new_color){
            this.color = new_color;
        }
        greet() {
            console.log(`The make is ${this.make} and color is ${this.color}`);
        }
    }

    let carObj = new Car("Ford","blue);
    carObj.greet();

    output: The make is Ford and color is blue
    
    carObj.setMake("Vauxhall");
    carObj.setColor("green");
    carObj.greet();
    
    output: The make is Vauxhall and color is green
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