How to merge properties of two JavaScript objects into one?

Hello everyone! I'm new to JavaScript and came across this task: I have two objects with data, and I need to merge their properties into one object. For example, there is a `user` object with name and age, and an `address` object with city and street. I want to get one object that contains all properties from both objects. Here's an example code: ```javascript const user = { name: 'Ivan', age: 30 }; const address = { city: 'Moscow', street: 'Tverskaya' }; // How to get an object that looks like this: // { // name: 'Ivan', // age: 30, // city: 'Moscow', // street: 'Tverskaya' // } ``` I tried simply adding objects with the `+` operator, but it doesn't work — it becomes a string. I tried using `Object.assign()`, but I didn't quite understand how to do it correctly.