What are some effective techniques for manipulating objects in JavaScript?

What are some effective techniques for manipulating objects in JavaScript?

There are several techniques for manipulating objects in JavaScript, such as using the spread operator, Object.assign(), and destructuring. Would you like to know more about any specific technique?

Can you explain how the spread operator works?

Sure! The spread operator (...) allows you to expand an iterable (like an array or object) into its individual elements. For example, you can create a new object by merging two objects: const newObj = {...obj1, ...obj2};.

What about Object.assign()? How does it differ from the spread operator?

Object.assign() copies the values of all enumerable own properties from one or more source objects to a target object. Unlike the spread operator, it modifies the target object directly. For example: Object.assign(target, source1, source2);.

Are there any performance considerations when using these techniques?

Yes, performance can vary. The spread operator is generally more readable, but Object.assign() can be faster in some cases. It's best to test both methods in your specific use case.