const regex = /(?<!\d)(?!0|127)\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?<!\\d)(?!0|127)\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}', 'gm')
const str = `127.3.65.7
alkjgfbvui vluiybr vk ru r127.0.0.1fal;iufnaw waoun
12.0.1.5
mjhgvjg0.0.0.0kjuycuj
0.0.0.0
0.0.0.0
gare bloing r pgnao wyin212.2.174.64
207.71.31.224
awuie nvp; vwa rv;awiu n ;lkirjght94.206.93.104ta;wourit mrt'
172.20.128.1
172.20.164.207
172.20.164.203
172.20.164.209
1.8.0.144`;
// 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