why I can't return an object with an added property key in javaScript

Sabrina 0
Viewed 18

You have been asked to update the visitors list with the amounts that each guest will donate for the organisation . Unfortunately, all the donation amounts found in email messages have been sent to you as strings!

Examples:

trackVisitors({ firstName: "Danciaa", lastName: "fran", age: 21 }, '24'); // should return { firstName: "Danciaa", lastName: "fran", age: 21, paidForTicket: 24 }

key-value
1 Answers

If you're fine with mutating the original object, you can do this:

const trackVisitors = (visitor, paidForTicket) => {
  visitor.paidForTicket = +paidForTicket; // or `Number()` or `parseInt()` or various other methods of string->int
  return visitor;
}
console.log(trackVisitors({
  firstName: "Danciaa",
  lastName: "fran",
  age: 21
}, '24'));

If you're making a pure function, you can do this instead:

const trackVisitors = (visitor, paidForTicket) => ({
  ...visitor,
  paidForTicket: +paidForTicket, // or `Number()` or `parseInt()` or various other methods of string->int
});
console.log(trackVisitors({
  firstName: "Danciaa",
  lastName: "fran",
  age: 21
}, '24'));

Samathingamajig0
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