How to properly iterate over object properties in JavaScript?

Hello everyone! I've just started learning JavaScript and ran into a problem. I have an object with user data, and I need to output all its properties and values to the console or to the page. I'm used to working with arrays, where I use a `for` loop or `forEach`, but with objects it doesn't work the same way. Here's an example of my object: ```javascript const user = { name: 'Anna', age: 25, city: 'Moscow', isAdmin: false }; ``` I tried doing this: ```javascript for (let i = 0; i < user.length; i++) { console.log(user[i]); } ``` But it doesn't work — `user.length` returns `undefined`. Then I tried `forEach`: ```javascript user.forEach((value, key) => console.log(key, value)); ``` And got an error: `user.forEach is not a function`. I'm stuck. Please advise.