is-valid-domain
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0.1.6 • Public • Published

is-valid-domain

Validate domain name in JavaScript

Demo

https://lab.miguelmota.com/is-valid-domain

Install

npm install is-valid-domain

Usage

const isValidDomain = require('is-valid-domain')

isValidDomain('example.com') // true
isValidDomain('foo.example.com') // true
isValidDomain('bar.foo.example.com') // true
isValidDomain('exa-mple.co.uk') // true
isValidDomain('xn--80ak6aa92e.com') // true
isValidDomain('_dnslink.ipfs.io') // true
isValidDomain('exa_mple.com') // false
isValidDomain('-example.co.uk') // false
isValidDomain('example') // false
isValidDomain('ex*mple.com') // false
isValidDomain('*.example.com') // false
isValidDomain('*.com') // false
isValidDomain(3434) // false

isValidDomain('foo.example.com', {subdomain: true}) // true
isValidDomain('foo.example.com', {subdomain: false}) // false
isValidDomain('*.example.com', {wildcard: false}) // false
isValidDomain('*.example.com', {wildcard: true}) // true
isValidDomain('*.example.com', {subdomain: false, wildcard: true}) // false
isValidDomain('はじめよう.みんな') // false
isValidDomain('はじめよう.みんな', {allowUnicode: true}) // true
isValidDomain('ai.') // false
isValidDomain('ai.', {topLevel: true}) // true

view more examples

Test

npm test

Contributing

Adding new domains:

  • Add second level domain to data/second_level_domains.csv
  • Run npm run generate to generate JSON map file
  • Run npm test

FAQ

  • Q: Why is trailing dot . in domain names verified as true?

    • A: Fully qualified domain names allow the trailing dot which represents the root zone. More info here and here.

License

MIT

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Install

npm i is-valid-domain

Weekly Downloads

401,093

Version

0.1.6

License

MIT

Unpacked Size

115 kB

Total Files

16

Last publish

Collaborators

  • miguelmota