const regex = /[\([]?([0-9]{3})[\)\]]?[-. ]?[\([]?([0-9]{3})[\)\]]?[-. ]?[\([]?([0-9]{4})[\)\]]?|([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('[\\([]?([0-9]{3})[\\)\\]]?[-. ]?[\\([]?([0-9]{3})[\\)\\]]?[-. ]?[\\([]?([0-9]{4})[\\)\\]]?|([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])[-. ]([0-9])', 'g')
const str = `Yes I understand that, but in reality, when I try to run '987 654 3210' or '987-654-3210' or '987.654.3210', it does not work.
987 654 3210
9 8 7 6 5 4 3 2 1 0
(987) 654 3210
(987) (654) (3210)
987.654-3210
9 8 7.6-5-4.3 2 1 0
[987] 654 3210
(987)-(654).(3210)`;
// 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