const regex = /^(https?:\/\/)?([\w\Q$-_+!*'(),%\E]+\.)+(\w{2,63})(:\d{1,4})?([\w\Q/$-_+!*'(),%\E]+\.?[\w])*\/?$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(https?:\\\/\\\/)?([\\w\\Q$-_+!*\'(),%\\E]+\\.)+(\\w{2,63})(:\\d{1,4})?([\\w\\Q\/$-_+!*\'(),%\\E]+\\.?[\\w])*\\\/?$', 'gm')
const str = `http://google.com
https://google.com
http://www.google.com
www.google.com
www.google.de:8080
www.test123.de
www.domain.com.de.whatever.to
www.google
h4xx0!2.net
page.to
hallo.to/test/whatever
hallo.to/test/whatever.cgi
www.google.com/startpage.html/
www.google.!!!
www..com
http://blabla.computer.de/.......................`;
// 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