SWIFT / BIC Code in JS
Validate SWIFT/BIC bank identifier codes — 8 chars (head office) or 11 chars (branch).
Try it in the JS tester →Pattern
regexJS
^[A-Z]{6}[A-Z0-9]{2}(?:[A-Z0-9]{3})?$JavaScript / ECMAScript code
jsJavaScript
const re = new RegExp("^[A-Z]{6}[A-Z0-9]{2}(?:[A-Z0-9]{3})?$", "");
const input = "DEUTDEFF";
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
[A-Z]{6} matches the bank-and-country prefix. [A-Z0-9]{2} matches the location code. (?:[A-Z0-9]{3})? optionally matches the 3-character branch code, allowing both 8-char head-office BICs and 11-char branch BICs.
Examples
Input
DEUTDEFFMatches
DEUTDEFF
Input
BNPAFRPPXXXMatches
BNPAFRPPXXX
Input
INVALID1No match
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