Are keys in javascript object ordered?

In JavaScript, the order of keys in an object is not guaranteed. The ECMAScript specification does not require objects to maintain the order of their properties, and different JavaScript engines may implement object property ordering differently.

While some JavaScript engines may preserve the order of object keys in certain cases, such as when the keys are added in a specific order or when iterating over the keys using a for...in loop, you should not rely on this behavior in your code.

If you need to maintain the order of key-value pairs, you can use an array of objects instead of a single object. Alternatively, you can use a Map object, which is a built-in JavaScript data structure that maintains the order of its key-value pairs.