const regex = /(?:^(?<year>-?(?:[1-9][0-9]*)?[0-9]{4})-(?<month>1[0-2]|0[1-9])-(?<date>3[01]|0[1-9]|[12][0-9])T(?<hours>2[0-3]|[01][0-9]):(?<minutes>[0-5][0-9]):(?<seconds>[0-5][0-9])\.(?<ms>[0-9]+)?)(?<offset>Z|[+-][0-5][0-9](?::?[0-5][0-9])?)?$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?:^(?<year>-?(?:[1-9][0-9]*)?[0-9]{4})-(?<month>1[0-2]|0[1-9])-(?<date>3[01]|0[1-9]|[12][0-9])T(?<hours>2[0-3]|[01][0-9]):(?<minutes>[0-5][0-9]):(?<seconds>[0-5][0-9])\\.(?<ms>[0-9]+)?)(?<offset>Z|[+-][0-5][0-9](?::?[0-5][0-9])?)?$', 'gm')
const str = `2019-04-10T11:07:58.846
2019-04-10T11:07:58.846+03:00
2019-04-10T11:07:58.846-03:00
2019-04-10T11:07:58.846+0300
2019-04-10T11:07:58.846-0300
2019-04-10T11:07:58.846Z
2019-04-10T11:07:58.846+03
2019-04-10T11:07:58.846-03`;
// 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