const regex = /^\s*($|#|\w+\s*=|(?<SECOND>(?:\?|\*|(?:(?<START_SEC>[0-5]?\d)(?:(?<DELIMITER_SEC>\-|\/|\,)(?<END_SEC>[0-6]?\d))*)))\s+(?<MINUTE>(?:\?|\*|(?:(?<START_MIN>[0-5]?\d)(?:(?<DELIMITER_MIN>\-|\/|\,)(?<END_MIN>[0-6]?\d))*)))\s+(?<HOUR>(?:\?|\*|(?:(?<START_HR>[0-2]?\d)(?:(?<DELIMITER_HR>\-|\/|\,)(?<END_HR>[0-2]?\d))*)))\s+(?<DAYOFMONTH>\?|\*|(?:(?<START_DOM>L|W|LW|[1-3]?\dW?)(?:(?<DELIMITER_DOM>\-|\/|\,)(?<END_DOM>[1-3]?\d?W?))*))\s+(?<MONTH>\*|(?:(?<START_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)(?:(?<DELIMITER_MON>\-|\/|\,)(?<END_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))*))\s+(?<DAYOFWEEK>\?|\*|(?:(?<START_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT)(?:(?:(?:(?<DELIMITER_DOW>\/|\,|\#)(?<END_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT))*)L?)*))(?:|\s)+(?<YEAR>(?:\*|(?:(?<START_YR>\b(?:[1-2](?:9|0)\d\d)\b)(?:(?<DELIMITER_YR>\-|\/|\,)(?<END_YR>\b(?:[1-9]|[1-9][0-9]|1[0-8][0-9]|19[0-2])\b|\b(?:[1-2](?:9|0)\d\d)\b))*))))$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^\\s*($|#|\\w+\\s*=|(?<SECOND>(?:\\?|\\*|(?:(?<START_SEC>[0-5]?\\d)(?:(?<DELIMITER_SEC>\\-|\\\/|\\,)(?<END_SEC>[0-6]?\\d))*)))\\s+(?<MINUTE>(?:\\?|\\*|(?:(?<START_MIN>[0-5]?\\d)(?:(?<DELIMITER_MIN>\\-|\\\/|\\,)(?<END_MIN>[0-6]?\\d))*)))\\s+(?<HOUR>(?:\\?|\\*|(?:(?<START_HR>[0-2]?\\d)(?:(?<DELIMITER_HR>\\-|\\\/|\\,)(?<END_HR>[0-2]?\\d))*)))\\s+(?<DAYOFMONTH>\\?|\\*|(?:(?<START_DOM>L|W|LW|[1-3]?\\dW?)(?:(?<DELIMITER_DOM>\\-|\\\/|\\,)(?<END_DOM>[1-3]?\\d?W?))*))\\s+(?<MONTH>\\*|(?:(?<START_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)(?:(?<DELIMITER_MON>\\-|\\\/|\\,)(?<END_MON>[1-9]|1[012]|JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC))*))\\s+(?<DAYOFWEEK>\\?|\\*|(?:(?<START_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT)(?:(?:(?:(?<DELIMITER_DOW>\\\/|\\,|\\#)(?<END_DOW>[1-7]|SUN|MON|TUE|WED|THU|FRI|SAT))*)L?)*))(?:|\\s)+(?<YEAR>(?:\\*|(?:(?<START_YR>\\b(?:[1-2](?:9|0)\\d\\d)\\b)(?:(?<DELIMITER_YR>\\-|\\\/|\\,)(?<END_YR>\\b(?:[1-9]|[1-9][0-9]|1[0-8][0-9]|19[0-2])\\b|\\b(?:[1-2](?:9|0)\\d\\d)\\b))*))))$', 'gm')
const str = `* 37 11 1/32 * ? 2023/1
0 0 0 1/14 3/2 ? 2020,2045,2055,2060
0 0 0 1,6,11,13,16,21,22 3/2 ? 2020,2045,2055,2060
46 10 10 2/7 2/2 MON,FRI,SUN 2024/1`;
// 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