Native Way To Merge Objects In Javascript

In JavaScript, merging objects is a common task that developers often encounter when working on web applications. There are multiple ways to achieve this, but using the native object spread syntax in JavaScript is a convenient and efficient method. In this article, we will explore the native way to merge objects in JavaScript using the object spread syntax.

The object spread syntax is a feature introduced in ES6 (ECMAScript 2015) that allows us to copy properties from one object into another object. This syntax provides a concise and readable approach to merge objects without mutating the original objects.

To merge two or more objects using the object spread syntax, you can simply create a new object and use the spread operator (`...`) to copy the properties of the existing objects into the new object. Here's an example to demonstrate how this works:

const obj1 = { a: 1, b: 2 };
const obj2 = { b: 3, c: 4 };
const mergedObject = { ...obj1, ...obj2 };

console.log(mergedObject);
// Output: { a: 1, b: 3, c: 4 }

In this example, we have two objects `obj1` and `obj2` that we want to merge. By using the object spread syntax, we create a new `mergedObject` that contains the properties of both `obj1` and `obj2`. If there are duplicate keys in the objects being merged, the rightmost key's value will overwrite the value of the same key in the merged object.

Additionally, you can merge multiple objects at once by spreading them within the curly braces. Here's an example with three objects:

const obj1 = { a: 1, b: 2 };
const obj2 = { b: 3, c: 4 };
const obj3 = { c: 5, d: 6 };
const mergedObject = { ...obj1, ...obj2, ...obj3 };

console.log(mergedObject);
// Output: { a: 1, b: 3, c: 5, d: 6 }

It's important to note that the object spread syntax performs a shallow merge, meaning that only the top-level properties are merged. If the objects being merged contain nested objects or arrays, those nested structures will not be deeply merged.

In conclusion, the native object spread syntax in JavaScript provides a simple and effective way to merge objects without altering the original objects. By leveraging this syntax, you can streamline your coding process and efficiently combine multiple objects into a single merged object. Experiment with this approach in your JavaScript projects to make your code more clean and maintainable.