const regex = /^(?<date>\d{4}\-\d{2}\-\d{2}\s+)(?<time>\d{2}\:\d{2}\:\d{2}\s+)(?<sip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\s+)(?<csmethod>.+?\s+)(?<csuristem>.+?\s+)(?<csuriquery>.+?\s+)(?<sport>\d{1,3}\s+)(.+?\s+)(?<cip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\s+)(?<csUseragent>.+?\s+)(?<scstatus>\d{1,3}\s+)(?<scsubstatus>\d{1,3}\s+)(?<scwin32status>\d+\s+)(?<scbytes>\d+\s+)(?<csbytes>\d+\s+)(?<timetaken>\d+)?$/;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(?<date>\\d{4}\\-\\d{2}\\-\\d{2}\\s+)(?<time>\\d{2}\\:\\d{2}\\:\\d{2}\\s+)(?<sip>\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\s+)(?<csmethod>.+?\\s+)(?<csuristem>.+?\\s+)(?<csuriquery>.+?\\s+)(?<sport>\\d{1,3}\\s+)(.+?\\s+)(?<cip>\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\s+)(?<csUseragent>.+?\\s+)(?<scstatus>\\d{1,3}\\s+)(?<scsubstatus>\\d{1,3}\\s+)(?<scwin32status>\\d+\\s+)(?<scbytes>\\d+\\s+)(?<csbytes>\\d+\\s+)(?<timetaken>\\d+)?$', '')
const str = `2014-05-06 10:27:17 10.200.40.56 GET / - 443 - 10.200.28.7 Mozilla/5.0+(compatible;+MSIE+9.0;+Windows+NT+6.1;+WOW64;+Trident/5.0) 401 2 2148074254 1880 428 109`;
let m;
if ((m = regex.exec(str)) !== null) {
// 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