Question

3

Set all Object keys to false

rated 0 times [ 9] [ 6] / answers: 1 / hits: 54540 / 8 Years ago, mon, november 28, 2016, 12:00:00

Lets say I have an object

  filter: {

    ID: false,

    Name: true,

    Role: false,

    Sector: true,

    Code: false

  }

I want to set all keys to false (to reset them). What's the best way to do this, I'd like to avoid looping with foreach and stuff. Any neat one liner?

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kylie

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3 Years ago

answered 8 Years ago reed · Accepted Answer

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 }