const regex = /(\%date\%)(\d{4}-\d{1,2}-\d{1,2})((T)(\d{1,2}\:\d{1,2}))?\#([a-zA-Z]+)?/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(\\%date\\%)(\\d{4}-\\d{1,2}-\\d{1,2})((T)(\\d{1,2}\\:\\d{1,2}))?\\#([a-zA-Z]+)?', 'g')
const str = `%date%2023-11-30#
%date%2023-11-30T00:12#
%date%2023-11-30#Berlin
%date%2023-11-30T12:12#Portugal
// error:
%date%#T12:12#
%date%2023-11-30#1131231Portugal
%date%2023-11-30T12:12#Portugal123
`;
// 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