With rest parameter, you can represent a number of arguments as an array. ES6 brought rest parameter to ease the work of developers. For arguments objects, rest parameters are indicated by three dots … and precedes a parameter.
Example
Let’s see the following code snippet to define rest parameter.
<html> <body> <script> function addition(…numbers) { var res = 0; numbers.forEach(function (number) { res += number; }); return res; } document.write(addition(3)); document.write(addition(9,10,11,12,13)); </script> </body> </html>