const regex = /\(W\)\s+((?:19|20)\d{2}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}).*?\bIP:\s*((?:::[a-f\d]+:)?(?:(1\d{2}|2[0-4]\d|25[0-5]|\d{1,2})\.){3}(?-1)),\s*username:\s*\S+/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\(W\\)\\s+((?:19|20)\\d{2}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}).*?\\bIP:\\s*((?:::[a-f\\d]+:)?(?:(1\\d{2}|2[0-4]\\d|25[0-5]|\\d{1,2})\\.){3}(?-1)),\\s*username:\\s*\\S+', 'g')
const str = `(W) 2024-04-28T17:30:57 - WebAPI login failure. Reason: invalid credentials, attempt count: 3, IP: ::ffff:192.168.2.167, username: fdasdf`;
// 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