@litert/utils

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Function isValidIPv4Address ​

Source: IsValidIPv4Address.ts

Checks whether a string is a valid IPv4 address in standard dot-decimal notation (e.g., 192.168.1.1). Each octet must be an integer between 0 and 255 with no leading zeros.

Import ​

ts
import { isValidIPv4Address } from '@litert/utils-network';
// or via sub-path:
import { isValidIPv4Address } from '@litert/utils-network/functions/IsValidIPv4Address';

Signature ​

ts
function isValidIPv4Address(ip: string): boolean;

Parameters ​

  • Parameter ip: string

    The string to check.

Return Value ​

true if the string is a valid IPv4 address in dot-decimal notation, false otherwise.

Examples ​

ts
import { isValidIPv4Address } from '@litert/utils-network';

console.log(isValidIPv4Address('192.168.1.1')); // true
console.log(isValidIPv4Address('255.255.255.255')); // true
console.log(isValidIPv4Address('0.0.0.0')); // true
console.log(isValidIPv4Address('256.0.0.1')); // false  — octet out of range
console.log(isValidIPv4Address('192.168.1'));  // false  — not 4 octets
console.log(isValidIPv4Address('192.168.1.01')); // false — leading zero