const regex = new RegExp('^[^\\W\\d_]+\\.?(?:[- ][^\\W\\d_]+\\.?)*$', 'gm')
const str = `Valid street names are:
Mainstreet.
Mainstreet
Main Street
Big New mainstreet
Mainstreet-New
Mains Str.
St. Alexander Street
abcÜüßäÄöÖàâäèéêëîï ôœùûüÿçÀÂ-ÄÈÉÊËÎÏÔŒÙÛÜŸÇ.
John Kennedy Street
Not valid street names are:
Mainstreet #+;:_*´\`?=)(/&%\$§!
Mainstreet#+;:_*´\`?=)(/&%\$§!
Mainstreet 2
Mainstreet..
Mainstreet§
Valid cities are:
Edinôœùûüÿ
Berlin.
St. Petersburg
New-Berlin
Aue-Bad Schlema
Frankfurt am Main
Nürnberg
Ab
New York CityßäÄöÖàâäèéêëîïôœùûüÿçÀÂ-ÄÈÉÊËÎÏÔŒÙÛÜŸ
Not valid cities are:
Edingburgh 123
Edingburg123
St. Andrews 12
Berlin,#+;:_*´\`?=)(/&%\$§!
Berlin__
The solutions that I have at the moment matches very close but not perfectly:
For city and street name:
Unfortunately no match for these examples (the rest works fine):
St. Alexander Street
St. Petersburg
`;
// 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