/*Without named capture groups*/
var re = /(\d{4})-(\d{2})-(\d{2})/;
var match = re.exec('2021-07-09');
console.log(match[1]) // "2021"
console.log(match[2]) // "07"
console.log(match[3]) // "09"
/*With named capture groups*/
var re = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/;
var match = re.exec('2021-07-09');
console.log(match.groups.year) // "2021"
console.log(match.groups.month) // "07"
console.log(match.groups.day) // "09"
/*Without destructuring assignment*/
var re = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/;
var [match, year, month, day] = re.exec('2021-07-09');
console.log(match) // "2021-07-09"
console.log(year) // "2021"
console.log(month) // "07"
console.log(day) // "09"
RegExp named capture groups
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