const regex = /^(
(?![0.]+$)
(?:
(?:^|\.)
(?:
\d|[1-9][0-9]|1\d{2}|2[-4]\d|25[0-5]
)
){4}
)$/;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(
(?![0.]+$)
(?:
(?:^|\\.)
(?:
\\d|[1-9][0-9]|1\\d{2}|2[-4]\\d|25[0-5]
)
){4}
)$', '')
const str = `0.0.0.0`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
if ((m = regex.exec(str)) !== null) {
// 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