37 lines
632 B
Markdown
37 lines
632 B
Markdown
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# Functions
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<a id="isundefined"></a>
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## isUndefined
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▸ **isUndefined**(value?: *`any`*): `boolean`
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*Defined in [is/undefined.ts:19](https://github.com/polkadot-js/common/blob/6610403/packages/util/src/is/undefined.ts#L19)*
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*__name__*: isUndefined
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*__summary__*: Tests for a `undefined` values.
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*__description__*: Checks to see if the input value is `undefined`.
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*__example__*:
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```javascript
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import { isUndefined } from '@polkadot/util';
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console.log('isUndefined', isUndefined(void(0))); // => true
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```
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**Parameters:**
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| Name | Type |
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| ------ | ------ |
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| `Optional` value | `any` |
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**Returns:** `boolean`
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___
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