What is the difference between Object.keys and Object.entries?

Can you explain the difference between Object.keys and Object.entries in JavaScript?

Sure! Object.keys returns an array of a given object's own property names, while Object.entries returns an array of a given object's own enumerable string-keyed property [key, value] pairs.

Can you give me an example of how to use both methods?

Of course! For Object.keys, you might do: Object.keys({a: 1, b: 2}) which returns ['a', 'b']. For Object.entries, you would use: Object.entries({a: 1, b: 2}) which returns [['a', 1], ['b', 2]].

Are there any performance differences between the two?

Generally, Object.keys is faster since it only retrieves the keys, while Object.entries has to create pairs of keys and values, which can be slightly slower.

When should I use one over the other?

Use Object.keys when you only need the property names, and Object.entries when you need both keys and values for iteration or processing.