40 lines
840 B
Markdown
40 lines
840 B
Markdown
|
|
|
|
# Functions
|
|
|
|
<a id="ishex"></a>
|
|
|
|
## isHex
|
|
|
|
▸ **isHex**(value: *`any`*, bitLength?: *`number`*, ignoreLength?: *`boolean`*): `boolean`
|
|
|
|
*Defined in [is/hex.ts:24](https://github.com/polkadot-js/common/blob/49b0c84/packages/util/src/is/hex.ts#L24)*
|
|
|
|
*__name__*: isHex
|
|
|
|
*__summary__*: Tests for a hex string.
|
|
|
|
*__description__*: Checks to see if the input value is a `0x` prefixed hex string. Optionally (`bitLength` !== -1) checks to see if the bitLength is correct.
|
|
|
|
*__example__*:
|
|
|
|
```javascript
|
|
import { isHex } from '@polkadot/util';
|
|
|
|
isHex('0x1234'); // => true
|
|
isHex('0x1234', 8); // => false
|
|
```
|
|
|
|
**Parameters:**
|
|
|
|
| Name | Type | Default value |
|
|
| ------ | ------ | ------ |
|
|
| value | `any` | - |
|
|
| `Default value` bitLength | `number` | -1 |
|
|
| `Default value` ignoreLength | `boolean` | false |
|
|
|
|
**Returns:** `boolean`
|
|
|
|
___
|
|
|