ip-address-validation

About

Description

This is a fast module for validating IPv4 and IPv6 addresses.

It's written in JavaScript with extreme efficiency and simplicity.

A complete line-by-line code algorithm explanation is coming soon.

License

The Unlicense

Installation

Browser

git clone https://github.com/liamloads/javascript-ip-address-validation-module.git

<script src="ip-address-validation.js" type="text/javascript"></script>
<script type="text/javascript">console.log(ipAddressValidation('127.0.0.1'));</script>

Unix

cd
npm install ip-address-validation

const ipAddressValidation = require('ip-address-validation');
console.log(ipAddressValidation('127.0.0.1'));

Usage

Details

The module function accepts one IPv4 or IPv6 address argument.

IPv4 addresses are accepted with dotted x.x.x.x formatting without base conversion or subnet masking.

IPv6 addresses are accepted with long x:x:x:x:x:x:x:x, short x::x or translated x:x:x:x:x:x:x.x.x.x formatting without prefixes.

The return value is a number with an IP address version of either 4 or 6.

If the argument isn't a valid IPv4 or IPv6 address, the return value is false.

Examples

console.log(ipAddressValidation('127.0.0.1'));
// 4

console.log(ipAddressValidation(' 127.0.0.1'));
// false

console.log(ipAddressValidation('127.0.0.1/32'));
// false

console.log(ipAddressValidation('127.0.0.1000'));
// false

console.log(ipAddressValidation('::1'));
// 6

console.log(ipAddressValidation(':::1'));
// false

console.log(ipAddressValidation('0000:0000:0000:0000:0000:0000:0000:0001'));
// 6

console.log(ipAddressValidation('0000:0000:0000:0001::127.0.0.1'));
// 6

console.log(ipAddressValidation('0000:0000:0000:0000:0001::127.0.0.1000'));
// false

console.log(ipAddressValidation('AB:ab::cd:CD'));
// 6