Set all Object keys to false

Question

Lets say I have an object

  filter: {
    \"ID\": false,
    \"Name\": true,
    \"Role\": false,
    \"Sector\": true,
    \"Code\": false
  }

Answer 1

Using lodash, mapValues is a graceful, loop-free way:

filter = {
    "ID": false,
    "Name": true,
    "Role": false,
    "Sector": true,
    "Code": false
};

filter = _.mapValues(filter, () => false);

If you want to do this with Underscore.js, there is an equivalent, but with a slightly different name:

filter = _.mapObject(filter, () => false);

In either case, the value of filter will be set to:

{ ID: false, 
  Name: false, 
  Role: false, 
  Sector: false, 
  Code: false }