Can I use reduce on objects?

Can I use the reduce method on objects in JavaScript?

The reduce method is specifically designed for arrays. However, you can convert an object into an array of its values or entries and then use reduce.

How do I convert an object to an array to use reduce?

You can use Object.values(obj) to get an array of values or Object.entries(obj) for key-value pairs.

Can you give me an example of using reduce on an object?

Sure! If you have an object like {a: 1, b: 2, c: 3}, you can do: Object.values(obj).reduce((acc, val) => acc + val, 0) to sum the values.

What if I want to transform the object instead of summing values?

You can use reduce to create a new object. For example: Object.entries(obj).reduce((acc, [key, val]) => { acc[key] = val * 2; return acc; }, {}) to double the values.