CODEWITHSUNDEEP
polymer
Phil Giggles
Phil Giggles

Reputation: 127

How do I remove a key from an element object property

I have a Polymer 1.0 custom element which has a property called obj which is an object, say obj = { a: 1, b: 2}

How do I remove one of the keys?

I have tried this.set('obj.a', undefined) and this.set('obj.a', null)

but result is {a: null (or undefined), b: 2}

where what I want is just to remove 'a' leaving {b:2}

is there a correct way of doing it?

Upvotes: 0

Views: 473

Answers (1)

Neil John Ramal
Neil John Ramal

Reputation: 3734

Use delete. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete

Example:

let x = {a: 1, b: 2, '#sss': 3};

delete x.a;         // x is now {b: 2, '#sss': 3}
delete x['#sss'];   // x is now {b: 2}

Upvotes: 2

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