const regex = /((http(s)?[:\/\/]{1,}))?([a-z0-9\-]{1,}[.])([a-z0-9\-]{1,}[.])?([a-z]{2,3})(.{1,})?/ig;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('((http(s)?[:\\\/\\\/]{1,}))?([a-z0-9\\-]{1,}[.])([a-z0-9\\-]{1,}[.])?([a-z]{2,3})(.{1,})?', 'ig')
const str = `http://example.com
http://subdom.example.com
http://example.uk
https://example.com
https://subdom.example.com
https://example.uk
http://example.com/?query=butt
http://subdom.example.com/?query=butt
http://example.uk/?query=butt
https://example.com/?query=butt
https://subdom.example.com/?query=butt
https://example.uk/?query=butr
tasdfa .ss`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions