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 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.

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