Issue with TypeScript retrieving value from an array

Within my component.ts class, I have defined an interface called Country:

export interface Country{
  id: String;
  name: String;
  checked: false; 
}

const country: Country[] = [

   { id: 'India', name: 'India', checked: false},
   { id: 'USA', name: 'USA', checked: false},
   { id: 'Canada', name: 'Canada', checked: false},

]

selectedCountry: Country[] ;

There are checkboxes on the UI for each country. If a user selects India/USA/Canada one at a time, I want to handle it with an if-else statement like this:

if(this.selectedCountry.includes('India')
 // do something;
else if(this.selectedCountry.includes('USA')
 // do something;
else ...  

However, I encountered an error stating: Argument of type 'string' is not assignable to parameter of type 'Country'.

I would greatly appreciate any pointers or assistance in resolving this issue. Thank you!

Answer №1

Give this a shot

this.selectedCountry.some(country => country.label === "Japan");

The some() function evaluates if any of the items in an array meet a specific condition (as determined by a function).

If you want to make your code reusable:

validateCountry(label: string): boolean{
  return this.selectedCountry.some(country => country.label === label);
}

Answer №2

Does the country in this.selectedCountry match the Object country? What about checking if the ID of this.selectedCountry includes 'India'?

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