Function

and (dependentKey) ComputedProperty public

Module: @ember/object

Defined in packages/@ember/object/lib/computed/computed_macros.ts:560 

import { and } from '@ember/object/computed';
dependentKey
String
returns
ComputedProperty
computed property which performs a logical `and` on the values of all the original values for properties.

A computed property that performs a logical and on the original values for the provided dependent properties.

You may pass in more than two properties and even use property brace expansion. The computed property will return the first falsy value or last truthy value just like JavaScript's && operator.

Example:

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import { set } from '@ember/object';
import { and } from '@ember/object/computed';

class Hamster {
  @and('hasTent', 'hasBackpack') readyForCamp;
  @and('hasWalkingStick', 'hasBackpack') readyForHike;
}

let tomster = new Hamster();

tomster.readyForCamp; // false

set(tomster, 'hasTent', true);
tomster.readyForCamp; // false

set(tomster, 'hasBackpack', true);
tomster.readyForCamp; // true

set(tomster, 'hasBackpack', 'Yes');
tomster.readyForCamp; // 'Yes'

set(tomster, 'hasWalkingStick', null);
tomster.readyForHike; // null