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- validatePIN("1234") === true
- validatePIN("12345") === false
- validatePIN("a234") === false
- function validatePIN (pin) {
- //return true or false
- if (pin.length == 4) {
- return true;
- } else if (pin.length == 6) {
- return true;
- }
- return false;
- }
- ^(d{4}|d{6})$
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