Generate Random Numeric
Generate a random numeric string of the specified length.
randomNumeric
The randomNumeric function generates a random numeric string of the specified length.
Info
Does not rely on Node.js or Web APIs. Works on any JS engine
Function Signature
randomNumeric(length?: number): `${number}`Parameters
| Parameter | Type | Description |
|---|---|---|
length | number (optional) | Length of the numeric string to generate. Default: 6 |
Return Value
Returns a randomly generated numeric string (as a template literal type matching ${number}) of the specified length.
Example Usage
playground.ts
Use Cases
- Generating One-Time Passwords (OTPs)
- Creating verification codes (PINs)
- Generating numeric transaction references
- Creating numeric coupon or discount codes
Implementation Notes
- If
lengthis0or negative, an empty string is returned. - Uses
crypto.getRandomValueswhen available for secure randomness, and falls back toMath.randomif not.
See Also
- randomHex - Generate cryptographically secure random hex strings
- randomBytes - Generate cryptographically secure random bytes (
Uint8Array) - randomAlphaNumeric - Generate cryptographically secure random alphanumeric strings
- randomID - Generate customizable random alphanumeric ID (cryptographically not secure)
Last updated: Tue, Jun 16, 2026 06:17:07PM (UTC)