Strong username validation script (#1428)

* Script.js

* readme.md

Author: himanshu7895

Catalog Client Script/Strong Username Validation Script/Script.js

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+function onSubmit() {
+    // Get the username value from the field
+    var username = g_form.getValue('username'); // Change 'username' to your field name
+
+    // Define the regex pattern for a strong username
+    var usernamePattern = /^[a-zA-Z][a-zA-Z0-9]{5,}$/;
+
+    // Validate the username against the pattern
+    if (!usernamePattern.test(username)) {
+        // Display an error message if validation fails
+        g_form.showFieldMsg('username', 'Username must start with a letter, be at least 6 characters long, and contain only letters and numbers.', 'error');
+        return false; // Prevent form submission
+    }
+
+    return true; // Allow form submission if validation passes
+}

Catalog Client Script/Strong Username Validation Script/readme.md

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+Description of the Strong Username Validation Script
+Purpose
+The script is designed to validate a username entered by the user in a ServiceNow catalog item form. It ensures that the username adheres to specific criteria before the form can be successfully submitted.
+
+Validation Criteria
+The username must:
+Start with a letter: The first character of the username must be an alphabetic character (a-z or A-Z).
+Be at least 6 characters long: The username must contain a minimum of six characters.
+Contain only letters and numbers: The username can only include alphabetic characters and digits (0-9).