replace same value in multiple objects

Question

So this is been giving me a headache for quite a while:

{
  "gravetender": {
    "musicTokens": 2
  },
  "Bob-chan": {
    "musicTokens": 3
  }
}

I simply want to set all the musicTokens to 5, no matter the name. I've tried forEach and for in. This is what changes the musicTokens for a single user for now:

client.profiles [message.author.username].musicTokens = 5;

My client.profiles is my JSON, the message.author.username gets the name and .musicTokens targets the variable.

I'm looking for something like client.profiles.*.musicTokens = 5

thanks

There is no JSON in your code.

melpomene
– melpomene

2018-07-15 20:09:35 +00:00
Commented Jul 15, 2018 at 20:09 — melpomene
– melpomene, Commented Jul 15, 2018 at 20:09
awh so I don't know much about the code I wrote there

gravetender
– gravetender

2018-07-15 20:11:44 +00:00
Commented Jul 15, 2018 at 20:11 — gravetender
– gravetender, Commented Jul 15, 2018 at 20:11

Patrick Roberts · Accepted Answer · 2018-07-15 20:12:52Z

1

Use Object.values() and Array#forEach():

const client = {
  "profiles": {
    "gravetender": {
      "musicTokens": 2
    },
    "Bob-chan": {
      "musicTokens": 3
    }
  }
}

Object.values(client.profiles).forEach(profile => {
  profile.musicTokens = 5
})

console.log(client.profiles)

answered Jul 15, 2018 at 20:12

Patrick Roberts

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melpomene · Accepted Answer · 2018-07-15 20:21:13Z

1

 for(const profile of Object.values(client.profiles))
    profile.musicTokens = 5;

edited Jul 15, 2018 at 20:21

melpomene

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answered Jul 15, 2018 at 20:13

Jonas Wilms

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PlatypusMaximus · Accepted Answer · 2018-07-17 03:37:52Z

0

There is not a javascript way to do this outside of a potential 3rd party plugin. You'll have to loop over them all like so

Assuming client is a js object

let userNames = Object.keys(client.profiles);
usernames.forEach(username => {
    client.profiles[username].musicTokens = 5;
});

You can use the Map class to iterate over them in place

Assuming client.profiles is Map object

client.profiles.forEach(profile => profile.musicTokens = 5);

Make client.profiles a Map from a js object

client.profiles = new Map(Object.entries(client.profiles));

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/forEach

edited Jul 17, 2018 at 3:37

answered Jul 15, 2018 at 20:13

PlatypusMaximus

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1 Comment

Jonas Wilms Over a year ago

You can use the Map class to iterate over them in place i wanna see that.

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replace same value in multiple objects

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Make client.profiles a Map from a js object

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