Discussion on: 7 Ways to Iterate Over Arrays and When to Use Each

[Atulit Anand]

let allEntrees = orders.reduce(
(accumulator, currentValue) => [...accumulator, ...currentValue.entree]
)

In reduce() someone please explain this.

Uncaught TypeError: accumulator is not iterable
    at <anonymous>:2:38
    at Array.reduce (<anonymous>)
    at <anonymous>:1:25
(anonymous) @ VM134:2
(anonymous) @ VM134:1

I get it what she's trying to do but still, console gave me an error.

Thanks for the article.
I didn't know about for...in and for...of before.

[Christian Kozalla]

Well, I did not run the code above, but I'd suggest reading the documentation of reduce as a supplement

developer.mozilla.org/en-US/docs/W...

Anyways, some great examples 👍

[Atulit Anand]

Ty 😸 I did the math, why their is an error.

[Alex Lohr]

let allEntrees = orders.reduce(
(accumulator, currentValue) => 
  [...accumulator, ...currentValue.entree],
  [] // you forgot this here
)

FTFY

[Christine Contreras]

Thanks so much for catching this! updated.

[Atulit Anand]

[Atulit Anand]

lol never thought about this one, I used Object.values() instead and a tiny bit of mod in the logic.