Spread operator w3schools

The spread operator is used to expand or spread an iterable or an array .

spread operator is useful for many different routine tasks in JavaScript, including the following:

The spread operator is a feature of JavaScript introduced with ES6 that gives you access to the insides of an iterable object . The term “iterable object” is really just a computer science-y term for a category of data types. Specifically: arrays, objects literals, and strings.4 Ara 2019

The rest operator (…) allows us to call a function with any number of arguments and then access those excess arguments as an array . The rest operator also allows us in destructuring array or objects. The spread operator (…) allows us to expand an iterable like array into its individual elements.