allow up to 19 characters in iban serverside check

index.js

@@ -37,7 +37,7 @@ app.get('/api/qrcode', async (req, res) => {
     check('client_city', /^[a-zA-Z0-9ČŠŽĐ](?:[A-Z0-9 ČŠŽĐ]{0,31}[A-Z0-9ČŠŽĐ])?$/i)
     check('amount', /^(?=.{11}$)[0]{1,11}[0-9]{0,11}$/)
     check('payment_purpose', /^.{1,42}$/i)
-    check('iban', /^[A-Z]{2}\d{17}$/)
+    check('iban', /^[A-Z]{2}[A-Z0-9]{17,19}$/)
     check('reference', /^[A-Z]{2}[0-9\-]{1,24}$/)
     check('issuer_name', /^[a-zA-Z0-9ČŠŽĐ.'](?:[A-Z0-9 ČŠŽĐ.'\-]{0,31}[A-Z0-9ČŠŽĐ.'])?$/i)
     check('issuer_address', /^[a-zA-Z0-9ČŠŽĐ](?:[A-Z0-9 ČŠŽĐ\-.]{0,31}[A-Z0-9ČŠŽĐ])?$/i)

views/index.ejs

@@ -289,11 +289,11 @@ updateQR()
             
             <h5 id="api-qrcode-iban"><a href="#api-qrcode-iban">&#128279;</a> <code>iban</code></h5>
             <div>
-                <span>Regex: <code>^[A-Z]{2}\d{17}$</code></span>
+                <span>Regex: <code>^[A-Z]{2}[A-Z0-9]{17,19}$</code></span>
                 <br>
-                <span>Demo: <a href="https://regex101.com/r/8bXDvh/1">regex101.com/r/8bXDvh/1</a></span>
+                <span>Demo: <a href="https://regex101.com/r/dN0DsH/1">regex101.com/r/dN0DsH/1</a></span>
                 <br>
-                <span>Description: Must contain country code (exp. SI56). No spaces allowed. Max length 34 characters</span>
+                <span>Description: Must contain country code (exp. SI56). No spaces allowed. Max length 21 characters</span>
                 <br>
                 <span>Example: SI56047500000280672</span>
             </div>