Declare a new variable with a specific data type in TypeScript

Question

I'm working on creating a variable in my component of a specific type, as shown below.

myrequest.model.ts
export class MyRequest {
    public endValue: string;
    public yearEnd: string;
}

When importing the above into my component, I do the following:

myReqObj: MyRequest;

However, when I try to assign a value like this:

this.myReqObj.endValue = '23'

I get an error saying that myReqObj is undefined. Am I approaching this correctly? What is the correct way to do this?

Answer 1

Answer №1

Seems like you are required to create an instance of the MyRequest class. To achieve this, simply include a constructor in your code:

myReqInstance: MyRequest = new MyRequest(null, null);
this.myReqInstance.endValue = '23'

Answer 2

Seems like you are required to create an instance of the MyRequest class. To achieve this, simply include a constructor in your code:

myReqInstance: MyRequest = new MyRequest(null, null);
this.myReqInstance.endValue = '23'

Answer 3

Defining the value should look like this:

this.myValueObject ={
      finalAmount : '23'
}

Tip: Incorporate interfaces to define custom data types effectively.

export interface CustomRequest {
    finalAmount: string;
    endOfYear: string;
}

Answer 4

Defining the value should look like this:

this.myValueObject ={
      finalAmount : '23'
}

Tip: Incorporate interfaces to define custom data types effectively.

export interface CustomRequest {
    finalAmount: string;
    endOfYear: string;
}