5 Useful Things The Spread Operator Can Do in JavaScript

5 Useful Things The Spread Operator Can Do in JavaScript

Write a Better and Clean JavaScript Code with The Spread Operator

The spread operator is one of the important and useful features that has been added to JavaScript. It basically spreads or expands the value of an iterable object in JavaScript. It also allows us to expand arrays and other expressions in places where multiple parameters or elements are expected. There are multiple scenarios where the spread operator can be very useful to write a better and clean JavaScript code in an easy way.

In this short article, we will explore some use cases of the spread operator {…} in JavaScript.

So, let’s get started.

1. Combine Two Objects

We can merge two objects using the spread operator in JavaScript. Have a look at the example below:

let employee = { name:'Jhon',lastname:'Doe'};
const salary = { grade: 'A', basic: '$3000' };
const summary = {...employee, ...salary};
console.log(summary);
// Prints: {name: "Jhon", lastname: "Doe", grade: "A", basic: "$3000"}

Here employee and salary objects are merged together and that produces a new object with merged key-value pairs.

web-development software-engineering javascript programming software-development

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