JavaScript / ECMAScript

URL Validation in JS

Match http and https URLs with optional www prefix, paths, query strings, and fragments.

Try it in the JS tester →

Pattern

regexJS
https?:\/\/(?:www\.)?[\w\-]+(?:\.[\w\-]+)+[\w\-._~:/?#\[\]@!$&'()*+,;=%]*   (flags: gi)

JavaScript / ECMAScript code

jsJavaScript
const re = new RegExp("https?:\\/\\/(?:www\\.)?[\\w\\-]+(?:\\.[\\w\\-]+)+[\\w\\-._~:/?#\\[\\]@!$&'()*+,;=%]*", "gi");
const input = "https://www.example.com";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

How the pattern works

Starts with http:// or https://, optional www., then one or more domain labels separated by dots, followed by any valid URL characters for the path and query.

Examples

Input

https://www.example.com

Matches

  • https://www.example.com

Input

http://api.example.org/v1/users?id=42

Matches

  • http://api.example.org/v1/users?id=42

Input

not a url

No match

—

Same pattern, other engines

Python (re)

Supported

See how this pattern looks (and behaves) in Python's stdlib `re` module.

Go (RE2)

Supported

See how this pattern looks (and behaves) in Go's `regexp` package (RE2 engine).

← Back to URL Validation overview (all engines)