what_is_a_rest_parameter.md

What is a rest parameter

What is a rest parameter?

A rest parameter allows a function to accept an indefinite number of arguments as an array. It is denoted by ....

Example:

function sum(...numbers) {
  return numbers.reduce((a, b) => a + b, 0);
}
console.log(sum(1, 2, 3, 4)); // 10

Tags: basic, JavaScript, functions

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