const regex = /^([0-9]{3}|\([0-9]{3}\))([-. ]?)([0-9]{3})\2([0-9]{4})$/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^([0-9]{3}|\\([0-9]{3}\\))([-. ]?)([0-9]{3})\\2([0-9]{4})$', 'gm')
const str = `1234567890
123-456-7890
123.456.7890
123 456 7890
(123)4567890
(123)-456-7890
(123).456.7890
(123) 456 7890
(123 456 7890
(123 456 7890`;
// 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