How do I use the reduce method with objects in JavaScript?

How do I use the reduce method with objects in JavaScript?

The reduce method can be used to transform an array of objects into a single object. Would you like an example?

Yes, please provide an example.

Sure! Here's a simple example:

const items = [
  { name: 'apple', quantity: 2 },
  { name: 'banana', quantity: 3 },
  { name: 'orange', quantity: 1 }
];

const totalQuantity = items.reduce((acc, item) => {
  acc[item.name] = (acc[item.name] || 0) + item.quantity;
  return acc;
}, {});

console.log(totalQuantity);
// Output: { apple: 2, banana: 3, orange: 1 }

This code aggregates the quantities of each fruit into a single object.

What if I want to sum the quantities of the same fruit?

In that case, the example I provided already does that! It sums the quantities of each fruit by using the fruit's name as the key in the resulting object.

Got it! Thanks for the clarification.