Review:
Object.assign (javascript)
overall review score: 4.2
⭐⭐⭐⭐⭐
score is between 0 and 5
Object.assign() is a method in JavaScript that copies the values of all enumerable own properties from one or more source objects to a target object, effectively merging objects. It is commonly used for cloning objects or merging multiple objects into one, providing a straightforward way to augment objects with additional properties.
Key Features
- Shallow copy: copies only top-level properties, not nested objects
- Supports multiple source objects for merging
- Returns the target object after copying properties
- Useful for object cloning and extension
- Part of the JavaScript standard library (ES6+)
Pros
- Simple and easy-to-understand syntax
- Efficient for shallow copying and object merging
- Widely supported across modern browsers and environments
- Helpful in maintaining immutable patterns with proper use
Cons
- Performs shallow copy only; nested objects are shared references
- Does not handle deep cloning of complex structures
- Properties in later sources override earlier ones without warning
- Cannot copy non-enumerable or symbol properties