programming-examples/js/Vre1/Check whether a given value is US zip code or not.js

function is_usZipCode(str)  
{  
 regexp = /^[0-9]{5}(?:-[0-9]{4})?$/;  
    
        if (regexp.test(str))  
          {  
            return true;  
          }  
        else  
          {  
            return false;  
          }  
}  
  
console.log(is_usZipCode("03201-2150"));  
  
console.log(is_usZipCode("7892"));