const regex = /^(.*?)\s+[^\s]*\s+\d.*?Datum:\s*([\d\.]+)/img;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(.*?)\\s+[^\\s]*\\s+\\d.*?Datum:\\s*([\\d\\.]+)', 'img')
const str = `Max Muster Musterstraße 22B 11111 Musterhausen Fon: 04321 / 123456 Fax: 04321 / 23356 vertrieb@muster-text.de www.muster-text.de Kunden-Nr.: 023456 USt-IdNr.: DE111111111 Bestell-Nr.: 343213 Datum: 13.12.2021
Firma Musterhausen Musterallee 1a 11111 Musterhausen Fon: 04321 / 123456 Fax: 04321 / 23356 vertrieb@muster-text.de www.muster-text.de Kunden-Nr.: 023456 USt-IdNr.: DE111111111 Bestell-Nr.: 343213 Datum: 13.12.2021
Sonja Musterfrau-Doppelhans Musterallee 1a 11111 Musterhausen Fon: 04321 / 123456 Fax: 04321 / 23356 vertrieb@muster-text.de www.muster-text.de Kunden-Nr.: 023456 USt-IdNr.: DE111111111 Bestell-Nr.: 343213 Datum: 13.12.2021
Peter Muster-Whatever-Blablub Musterallee 1a 11111 Musterhausen Fon: 04321 / 123456 Fax: 04321 / 23356 vertrieb@muster-text.de www.muster-text.de Kunden-Nr.: 023456 USt-IdNr.: DE111111111 Bestell-Nr.: 343213 Datum: 13.12.2021`;
// 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