const regex = /(\d{1,3}(?:\.\d{1,3}){2}\.(\d{1,3}))(?:(?:-|\s+to\s+)(\d{1,3}(?![\d\.]))|(?:-|\s*to\s+)(\d{1,3}(?:\.\d{1,3}){3})|\s+(25\d(?:\.\d{1,3}){3})|\s*\/(\d{1,3}))?/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(\\d{1,3}(?:\\.\\d{1,3}){2}\\.(\\d{1,3}))(?:(?:-|\\s+to\\s+)(\\d{1,3}(?![\\d\\.]))|(?:-|\\s*to\\s+)(\\d{1,3}(?:\\.\\d{1,3}){3})|\\s+(25\\d(?:\\.\\d{1,3}){3})|\\s*\\\/(\\d{1,3}))?', 'g')
const str = `ip: "47.1.2.3"
range: "47.1.2.3-4"
ip range: "47.1.2.3-47.1.2.4"
ip to range: "47.1.2.3 to 4"
ip to ip range: "47.1.2.3 to 47.1.2.4"
ip CIDR: "47.1.2.4/32"
ip Mask: "47.1.2.4 255.255.255.255"
what you want:"47.1.2.3 to 4, 47.1.2.7, 47.1.3.9-47.1.3.19"`;
// 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