const regex = /Principal Core.*?\bMac Domain: (\S+)/gms;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('Principal Core.*?\\bMac Domain: (\\S+)', 'gms')
const str = `Principal Core Te1/1/0:
DS 0 controller: 1/0/2 (profile 200, DOCSIS)
DS 1 controller: NA
US 0 controller: 1/0/0 (profile 0, DOCSIS)
US 1 controller: NA
Mac Domain: Ca1/0/0
Auxiliary Core Te1/1/6:
DS 0 controller: NA
DS 1 controller: NA
US 0 controller: NA
US 1 controller: NA
Mac Domain: NA`;
// 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