Is there a way to transfer all values from one typescript class, Class A, to another matching class, Class B? Could there be a method to extract all properties of Class A as an object?
Is there a way to transfer all values from one typescript class, Class A, to another matching class, Class B? Could there be a method to extract all properties of Class A as an object?
When dealing with class instances, remember that they are objects. This means you can utilize regular object prototype functions on them, like in the example below.
class MyClass {
_a=0;
_b=0;
constructor(a, b){
this._a=a;
this._b=b;
}
set a(a){
return this._a = a;
}
get a(){
return this._a;
}
set b(b){
return this._b = b;
}
get b(){
return this._b;
}
}
const instance = new MyClass(2,3);
console.log("keys", Object.keys(instance))
console.log("values", Object.values(instance))
console.log("entries", Object.entries(instance))
instance.a = 5;
instance.b = 5;
console.log("keys", Object.keys(instance))
console.log("values", Object.values(instance))
console.log("entries", Object.entries(instance))It's important to note that this will only display the actual parameters and will not include any setters or getters.
I'm having trouble grasping the question at hand. If you're looking to transfer all field values from class 1 to class 2, you can achieve this using:
Object.assign(cl2, cl1);
For a complete demonstration (you can test it here, just click on "Run"):
class Class1 {
public a: number = 1;
public b: number = 2;
public c: number = 3;
};
class Class2 {
public a?: number;
public b?: number;
public c?: number;
};
let cl1 = new Class1;
console.log('1 = ', cl1, cl1 instanceof Class1, cl1 instanceof Class2)
let cl2: Class2 = new Class2;
Object.assign(cl2, cl1);
console.log('2 = ', cl2, cl2 instanceof Class1, cl2 instanceof Class2);
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