const regex = /^(?<firstName>\p{Lu}(?:\.|\p{Ll}+)(?: \p{Lu}\.)?) (?<lastName>\p{L}\p{Ll}+(?:\p{Pd}\p{Lu})?\p{Ll}+)$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^(?<firstName>\\p{Lu}(?:\\.|\\p{Ll}+)(?: \\p{Lu}\\.)?) (?<lastName>\\p{L}\\p{Ll}+(?:\\p{Pd}\\p{Lu})?\\p{Ll}+)$', 'gm')
const str = `John Smith
John S. Smith
J. R. Smith`;
// 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