Validating IPv4 and IPv6 Addresses with Ease — Unveiling the Power of Validation in JavaScript

<p><em>In this article, we will embark on an enlightening journey to solve an intriguing problem using JavaScript. Our goal is to validate whether a given string represents a valid IPv4 or IPv6 address. Address validation is essential in networking and security applications to ensure the correct format of IP addresses. We will explore the logic behind this validation process and provide you with two code snippets: a simple one and an optimized version that ensures excellent time and space complexity. Get ready to unravel the secrets of address validation!</em></p> <p><img alt="" src="https://miro.medium.com/v2/resize:fit:630/0*TJuv8Ou9typypoTT" style="height:616px; width:700px" /></p> <p>Photo by&nbsp;<a href="https://unsplash.com/@vighneshd?utm_source=medium&amp;utm_medium=referral" rel="noopener ugc nofollow" target="_blank">Vighnesh Dudani</a>&nbsp;on&nbsp;<a href="https://unsplash.com/?utm_source=medium&amp;utm_medium=referral" rel="noopener ugc nofollow" target="_blank">Unsplash</a></p> <h2>Logic:</h2> <p>To validate an IP address, we need to check its format and range. For IPv4 addresses, we check if the address consists of four decimal-separated parts, each ranging from 0 to 255. For IPv6 addresses, we check if the address consists of eight hexadecimal-separated parts, each containing 1 to 4 hexadecimal digits. We also need to handle zero compression in IPv6 addresses. Additionally, we need to consider edge cases such as leading zeros, empty parts, and invalid characters in the address.</p> <h2>Simple Code Snippet:</h2> <p>Let&rsquo;s start by looking at a simple code snippet that embodies the logic of validating IPv4 and IPv6 addresses:</p> <p><a href="https://medium.com/@stheodorejohn/validating-ipv4-and-ipv6-addresses-with-ease-unveiling-the-power-of-validation-in-javascript-2af04ee065c5">Website</a></p>