How do I loop through a JSON array?

Question

I have a Discord.js bot, I wanted to make a lockdown command, but my channel ids are stored in a JSON file, and I dont know how to iterate through it. This is the JSON configuration:

{
    "channels": {
        "main": {
            "id": "691548147922763825"
        },
        "creations": {
            "id": "700390086390448148"
        },
        "fanart": {
            "id": "691551615873843211"
        },
        "memes": {
            "id": "691549417173680148"
        }
    }
}

How can I loop through it? I know that just doing forEach on a JSON file doesnt work, so I need some help.

channels is not an array.

Tyler2P
– Tyler2P

2021-01-22 12:51:26 +00:00
Commented Jan 22, 2021 at 12:51 — Tyler2P
– Tyler2P, Commented Jan 22, 2021 at 12:51

Rob Monhemius · Accepted Answer · 2021-01-22 09:39:42Z

2

You can use for..in loops on objects to get the keys and iterate over them. Objects don't implement the Iterable interface, so for...of doesnt work. And forEach is not a method on an object, but on an array.

const json = {
    "channels": {
        "main": {
            "id": "691548147922763825"
        },
        "creations": {
            "id": "700390086390448148"
        },
        "fanart": {
            "id": "691551615873843211"
        },
        "memes": {
            "id": "691549417173680148"
        }
    }
}

for( let key in json.channels ) {
  console.log( key, json.channels[key] )
}

edited Jan 22, 2021 at 9:39

answered Jan 22, 2021 at 9:11

Rob Monhemius

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