isset

Determine if value is different from undefined and null.

See also empty().

import { isset } from '@aedart/support/misc';

isset('foo'); // true
isset(''); // true
isset(true); // true
isset(false); // true
isset(1234); // true
isset(1.234); // true
isset([]); // true
isset({}); // true
isset(() => true); // true

isset(undefined); // false
isset(null); // false

Multiple values

You can also determine if multiple values differ from undefined and null.

Note: All given values must differ from undefined and null, before method returns true.

isset('foo', { name: 'Jane' }, [ 1, 2, 3 ]); // true

isset('foo', null, [ 1, 2, 3 ]); // false
isset('foo', { name: 'Jane' }, undefined); // false