Upgrade Your JavaScript Skills: Mastering Three Game-Changing Features

Simplify Your Code with Object Spread, Optional Chaining, and Nullish Coalescing

Photo by Joan Gamell on Unsplash

If you’re a JavaScript developer, you’ve likely encountered situations where you need to work with objects, handle null or undefined values, or merge data from multiple sources. Fortunately, ECMAScript (the standardized version of JavaScript) has introduced several new syntax features that can streamline your coding process and make your code more readable and maintainable.

In this article, we’ll explore three powerful features: the Object Spread Operator, Optional Chaining, and the Nullish Coalescing Operator.

1. Object Spread Operator

The Object Spread Operator (...) is a concise and convenient way to copy properties from one object to another, merge objects, or create new objects from existing ones. It helps you avoid the need for complex object manipulation and can greatly simplify your code.

Example: Merging Objects

const person = { name: 'John', age: 30 };
const job = { position: 'Developer', company: 'Acme Inc.' };

// Before ES6
const personWithJob = Object.assign({}, person, job);
// { name: 'John', age: 30, position: 'Developer', company…