PAN Number Validation (#1454)

* readme.md

* fieldplaceholder.js

* readme.md

* PAN Validation.js

Author: Srikanth1306

Catalog Client Script/PAN Validation/PAN Validation.js

@@ -0,0 +1,13 @@
+function onChange(control, oldValue, newValue, isLoading, isTemplate) {
+    if (isLoading || newValue === '') {
+        return;
+    }
+    var panNumber = g_form.getValue("pan_number"); //Get the PAN card information
+    var panRegex = /^[A-Z]{5}[0-9]{4}[A-Z]{1}$/; // Regex for the PAN Card
+
+    if (panRegex.test(panNumber)) {
+        g_form.showFieldMsg("pan_number", "Valid PAN card number.", true); //Valid PAN card enterd populates this message 
+    } else {
+        g_form.showErrorBox("pan_number", "InValid PAN card number.", true); //In Valid PAN card details enterd populate this message 
+    }
+}

Catalog Client Script/PAN Validation/readme.md

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+PAN is a ten-digit unique alphanumeric number issued by the Income Tax Department.
+Indian PAN (Permanent Account Number) card based on its standardized format. 
+A PAN number is a unique 10-character alphanumeric identifier issued by the Indian government, and it follows a specific structure:
+First 5 characters: Uppercase English letters (A-Z).
+Next 4 characters: Numeric digits (0-9). 
+Last character: A single uppercase English letter (A-Z).
+ ![image](https://github.com/user-attachments/assets/37a6490b-912e-499c-9c41-c0cdf79491a5)
+
+When we provide the information in the mentioned format it validates as a valid PAN Card
+Eg: ABCDE1234F
+Result  
+![image](https://github.com/user-attachments/assets/779757b9-2d46-439b-bc8c-a468a5c0264a)
+
+Mentioned formate was not used it will give an error message to the field
+Eg:abcde1234f  
+![image](https://github.com/user-attachments/assets/1dd214b8-aaf5-405d-aefb-8e46b786be3c)
+
+Eg: 1234ABCDEF  
+![image](https://github.com/user-attachments/assets/08f538b7-d1ac-4d26-8579-8342ca757c8c)
+
+