ES6 - Rest Parameter

JavaScript
1

Tell us what’s happening:

Describe your issue in detail here.

Your code so far

What’s wrong with this code?! Why the console tells it’s not an arrow function???

const sum = (...num) => {
  let total = 0;
  const args = [...num];
  for (let i = 0; i < args.length; i++) {
    total += args[i];
  }
  return total;
}

sum(1, 2, 3);

Your browser information:

User Agent is: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Mobile Safari/537.36

Challenge Information:

ES6 - Use the Rest Parameter with Function Parameters

2

What’s this?

There is no args anymore

3

It is telling you about the expected function signature, it is not saying it isn’t an arrow function.

sum should be an arrow function which uses the rest parameter syntax (... ) on the args parameter.

When you see args in code blocks and referred to as a parameter it means it must be called args and it must be a parameter.

4

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