Is there a way to automate the conversion of string data into numbers in typescript with angular 11?

Is there a way to automatically convert data from string to number?

I have some unclear data that I want to be converted automatically based on its type.

This is the html code:

<form [formGroup]="formUser">
  <label>name: </label>
  <input formControlName="name" >
  <br>
  <label>name: </label>
  <input formControlName="userId" >
</form>
<button (click)="send()">send</button>

This is the ts code:

    export class AppComponent  {
      constructor(private fb:FormBuilder){
    
      }
      formUser=this.fb.group({
        name:null,
        userId:null,
      })
       send(){
    const user:IUser=this.formUser.value
    console.log(user);
  }
}
interface IUser{
  name:string,
  userId:number
}

Here's what appears in the console:

{name: "alis", userId: "12"} 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I would prefer not to rely on this method for conversion:

user.userId=Number(user.userId)

Answer №1

In the event that the userId is consistently numerical, you have the option to employ

<input formControlName="userId" type="number" />

Consequently, it will remain as a numerical type by default.

Answer №2

An easy method for transforming string data into number is by employing the unary plus operator +:

userData.id = +userData.id;

For further information, click here

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