const regex = /\[\*\*\].*?\](?<etCapturedData>[^\[]+)\s*\[\*\*\]/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('\\[\\*\\*\\].*?\\](?<etCapturedData>[^\\[]+)\\s*\\[\\*\\*\\]', 'g')
const str = `12/27-13:46:30.535369 [**] [1:2019876:2] ET SCAN SSH BruteForce Tool with fake PUTTY version [**] [Classification: Detection of a Network Scan] [Priority: 3] {TCP} 100.31.116.39:35016 -> 172.20.16.2:22
12/27-13:34:12.027500 [**] [1:2500056:4184] ET COMPROMISED Known Compromised or Hostile Host Traffic TCP group 30 [**] [Classification: Misc Attack] [Priority: 2] {TCP} 100.83.149.133:58061 -> 172.20.16.2:22
`;
// 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