const regex = /(?<date>\d{4}-\d{2}-\d{2})\s+(?<time>\d{2}:\d{2}:\d{2}\.\d{2})\s+(?<city>(?:\S|\s(?!\s))*)\s+(?<country>(?:\S|\s(?!\s))*)\s+(?<level>INFO|WARN|ERROR)\s+(?<message>[^\[]+\[(?<serverid>\d+)\][^\[]+\[(?<serverip>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5})\])/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?<date>\\d{4}-\\d{2}-\\d{2})\\s+(?<time>\\d{2}:\\d{2}:\\d{2}\\.\\d{2})\\s+(?<city>(?:\\S|\\s(?!\\s))*)\\s+(?<country>(?:\\S|\\s(?!\\s))*)\\s+(?<level>INFO|WARN|ERROR)\\s+(?<message>[^\\[]+\\[(?<serverid>\\d+)\\][^\\[]+\\[(?<serverip>\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}:\\d{1,5})\\])', 'gm')
const str = `2019-10-07 11:13:19.75 New York America INFO Server is connected. Server Id [34] Address [127.0.0.1:54266]`;
// 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