const regex = new RegExp('((25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\\.){3}(25[0-4]|2[0-4][0-9]|1[0-9][0-9]|[0-9]?[1-9])', 'gm')
const str = `192.168.1.1
8.8.8.8
9.9.9.9
127.0.0.1
255.255.255.255 # can't end in 255, reserved for broadcast
0.0.0.0 # can't end in 0, i don't know what that's reserved for
0.0.0.1
`;
// 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