What is Object.assign in JavaScript?

Can you explain what Object.assign does in JavaScript?

Sure! Object.assign is a method that copies the values of all enumerable properties from one or more source objects to a target object.

What happens if there are properties with the same name?

If there are properties with the same name, the values from the source objects will overwrite the values in the target object.

Can you give me an example of how to use it?

Of course! Here's a simple example:

const target = { a: 1, b: 2 };
const source = { b: 3, c: 4 };
const result = Object.assign(target, source);
console.log(result); // { a: 1, b: 3, c: 4 }

Is Object.assign a shallow copy or a deep copy?

Object.assign creates a shallow copy, meaning it only copies properties at the first level. Nested objects are not cloned.