Business Day Calculator for ServiceNow (#2462)

* Create script.js

* Create readme.md

Author: bharakm

Server-Side Components/Script Includes/Calculate Business days dynamically/readme.md

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+# Business Day Calculator for ServiceNow
+
+This JavaScript function calculates a future date by adding a specified number of **business days** (excluding weekends) to a given date.
+
+
+##  Features
+- Skips weekends (Saturday and Sunday)
+- Works with any number of business days
+- Uses ServiceNow's `GlideDateTime` API
+
+##  Usage
+1. Copy the function into a **Script Include**, **Business Rule**, or **Scheduled Job** in ServiceNow.
+2. Call the function with:
+   - A valid date string (e.g., `'2025-10-24 12:00:00'`)
+   - The number of business days to add (e.g., `5`)
+
+##  Example
+```javascript
+gs.print(add_business_days('2025-10-24 12:00:00', 5));
+// Output: 2025-10-31 (skips weekend)

Server-Side Components/Script Includes/Calculate Business days dynamically/script.js

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+// Function to add any number of business days to a given date
+function add_business_days(date, num_days) {
+    var result_date = new GlideDateTime(date);
+    var added_days = 0;
+
+    while (added_days < num_days) {
+        result_date.addDaysUTC(1);
+        var day_of_week = result_date.getDayOfWeekUTC();
+        if (day_of_week != 6 && day_of_week != 7) { // Skip Saturday (6) and Sunday (7)
+            added_days++;
+        }
+    }
+
+    return result_date.getDate();
+}
+
+// Example usage:
+gs.print(add_business_days('2025-10-24 12:00:00', 5)); // Adds 5 business days