How to use Built-in Methods In Javascript
JavaScript’s built-in methods can also be utilized to check if a string is a valid IP address. One such method is inet_pton from the dns module. This method converts an IP address from its human-readable format (IPv4 or IPv6) into its binary form. By attempting to convert the string into binary format, we can determine if it’s a valid IP address.
Example:
const { promisify } = require('util');
const dns = require('dns');
// Promisify the dns.lookup method
const lookupPromise = promisify(dns.lookup);
// Function to check if a string is a valid IP address
async function isValidIPAddress(ipAddress) {
try {
// Attempt to convert the IP address to binary format
await lookupPromise(ipAddress);
return true; // If successful, it's a valid IP address
} catch (error) {
return false; // If an error occurs, it's not a valid IP address
}
}
// Example usage
const ipAddress = '192.168.0.1';
isValidIPAddress(ipAddress).then(result => {
console.log(result); // Output: true
});
Output:
true
How to check if a string is a valid IP address format in JavaScript ?
In this article, we will see how to check if a string is a valid IP address or not. An IP address is a unique identifier assigned to each device connected to a computer network that uses the Internet Protocol for communication. There are two common formats for IP addresses: IPv4 and IPv6. Checking if a string is a valid IP address format in JavaScript involves verifying if the string follows the rules for a standard IPv4 or IPv6 address.
These are the methods to check if a string is a valid IP address format in JavaScript:
Table of Content
- Using Split and Validate
- Using Library Functions
- Using net Module (Node.js specific):
- Using Built-in Methods: