Update templates/signup.html

templates/signup.html

@@ -136,6 +136,41 @@
             })
             .catch(error => console.error('Error:', error));
         }        
+
+      
+        function validateForm(event) {
+            const referralCode = document.getElementById('referral').value.trim();
+
+            if (referralCode && referralCode.length !== 8) {
+                const errorMessage = document.getElementById('error-message');
+                errorMessage.textContent = 'Referral code must be 8 characters long.';
+                event.preventDefault();
+                return false;
+            }
+            return true;
+        }
+
+        function checkReferralCode() {
+            const referralCode = document.getElementById('referral').value.trim();
+
+            if (referralCode) {
+                fetch('/check_referral', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ referral_code: referralCode })
+                })
+                .then(response => response.json())
+                .then(data => {
+                    const errorMessage = document.getElementById('error-message');
+                    if (!data.valid) {
+                        errorMessage.textContent = 'Invalid referral code.';
+                    } else {
+                        errorMessage.textContent = '';
+                    }
+                })
+                .catch(error => console.error('Error:', error));
+            }
+        }
     </script>
         
 </body>