JavaScript / ECMAScript

US Social Security Number in JS

Match US Social Security Numbers in the canonical XXX-XX-XXXX format.

Try it in the JS tester →

Pattern

regexJS

\b\d{3}-\d{2}-\d{4}\b   (flags: g)

JavaScript / ECMAScript code

jsJavaScript

const re = new RegExp("\\b\\d{3}-\\d{2}-\\d{4}\\b", "g");
const input = "123-45-6789";
const matches = [...input.matchAll(re)];
console.log(matches.map(m => m[0]));

Uses `String.prototype.matchAll` for global iteration (Node 12+ / all modern browsers).

How the pattern works

Three digits, hyphen, two digits, hyphen, four digits. Word boundaries prevent false matches inside longer digit runs. Note: this pattern does not validate SSN issuance rules.

Examples

Input

123-45-6789

Matches

123-45-6789

Input

SSN: 987-65-4321 on file

Matches

987-65-4321

Input

123456789

No match

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Same pattern, other engines

Python (re)

See how this pattern looks (and behaves) in Python's stdlib `re` module.

Go (RE2)

See how this pattern looks (and behaves) in Go's `regexp` package (RE2 engine).

← Back to US Social Security Number overview (all engines)