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ServiceNow Scripting: Tips and Tricks ServiceNow is a powerful platform used for IT service management (ITSM), IT operations management (ITOM), and IT business management (ITBM). Scripting in ServiceNow plays a crucial role in automating workflows, customizing applications, and enhancing the overall efficiency of the platform. While coding is essential to ServiceNow scripting, understanding the best practices, tips, and tricks can significantly improve efficiency without necessarily diving deep into complex scripts. This article will explore the best tips and tricks for ServiceNow scripting, focusing on optimizing performance, avoiding common pitfalls, and utilizing the platform s built-in capabilities effectively. ServiceNow Training 1. Understand ServiceNow Scripting Fundamentals Before delving into scripting, it s essential to understand the core scripting elements in ServiceNow: Client-side scripts: Execute in the user's browser and enhance UI/UX. Examples include Client Scripts and UI Policies. Server-side scripts: Run on the ServiceNow server and handle business logic. Examples include Business Rules, Script Includes, and Scheduled Jobs. Glide APIs: ServiceNow provides Glide APIs (GlideRecord, GlideUser, GlideSystem, etc.) to interact with the platform's database and services. Having a strong grasp of these scripting elements allows developers to optimize their scripts effectively. 2. Follow Best Practices for Performance Optimization

Performance is a key factor when scripting in ServiceNow. Poorly written scripts can slow down the platform and degrade the user experience. Here are some best practices to follow: a. Minimize GlideRecord Queries Avoid retrieving unnecessary records from the database. ServiceNow Online Training Use .addQuery() or .addEncodedQuery() to filter results efficiently. Always use .setLimit() when retrieving large datasets to avoid performance issues. b. Use Asynchronous Processing When Possible Instead of running long server-side scripts synchronously, leverage Scheduled Jobs, Events, or Workflows to process tasks in the background. This prevents unnecessary delays for end-users. c. Avoid Nested Loops and Redundant Queries If multiple queries are required, consider caching results or using data lookups instead of running repetitive GlideRecord queries. Optimize loops to minimize iterations. d. Cache Data When Necessary Use GlideSystem (gs) cache methods to store frequently used data to reduce database load. Consider using Script Includes for reusable functions instead of duplicating scripts across different areas of the platform. ServiceNow Course Online 3. Utilize No-Code and Low-Code Features ServiceNow provides numerous built-in features that reduce the need for extensive scripting: a. UI Policies Over Client Scripts Instead of writing JavaScript Client Scripts for UI modifications, use UI Policies where possible. UI Policies are easier to maintain and execute faster than scripts. b. Business Rules vs. Flow Designer Flow Designer is a low-code automation tool that can replace some Business Rules and reduce the need for manual scripting. It s particularly useful for handling approvals, notifications, and integrations without custom scripts. c. Scheduled Jobs vs. Background Scripts

Instead of running background scripts manually, use Scheduled Jobs to execute periodic tasks automatically. ServiceNow Institute This helps in better tracking, error handling, and scheduling of operations. 4. Debugging and Troubleshooting Techniques Even experienced ServiceNow developers encounter script issues. Knowing how to debug effectively can save time and frustration. a. Use gs.log() and gs.info() for Logging Logging is essential for troubleshooting Business Rules and Script Includes. Example: gs.log("Debugging message", "CustomLog") b. Debug Business Rules with "Debug Business Rule" Feature The Debug Business Rule tool in ServiceNow allows you to track rule execution and identify errors quickly. c. Client Scripts Debugging Using Browser Console Use console.log() to print values in the browser console. Enable JavaScript Log in ServiceNow s developer settings to track errors. d. Check Execution Order Ensure scripts execute in the correct sequence. ServiceNow Course Business Rules execute in the order: Before > Async > After 5. Security Best Practices in Scripting Security is critical when scripting in ServiceNow. Poorly written scripts can expose sensitive data or create vulnerabilities. a. Avoid Hardcoding Sensitive Information Do not store API keys, credentials, or other sensitive data in scripts. Use System Properties or ServiceNow Vault to manage sensitive values securely. b. Use GlideSystem (gs) Secure Methods Use gs. .getUser () instead of accessing raw user session data. Limit database queries to prevent exposing unnecessary records. c. Implement Role-Based Access Control (RBAC) Ensure that scripts execute only with appropriate user roles and permissions.

Use the gs.hasRole() function to check for user roles before allowing script execution. ServiceNow Online Course 6. Optimizing Client Scripts for a Better User Experience Client Scripts enhance user interactions, but poorly optimized scripts can slow down the UI. a. Reduce the Number of Client Scripts on Forms Multiple Client Scripts can lead to conflicts and slow form loading. Consolidate related scripts into a single Client Script where possible. b. Use Asynchronous Calls for External Requests Avoid g_form.getReference() instead of direct GlideRecord queries. blocking UI interactions by using g_form.setValue() and c. Test Scripts in Different Browsers Browser inconsistencies can impact script behavior. Test Client Scripts across Chrome, Firefox, and Edge for compatibility. 7. Leverage ServiceNow Community and Documentation Staying updated with the latest ServiceNow scripting practices ensures efficiency and security. a. Explore the ServiceNow Developer Portal The ServiceNow Developer Portal provides extensive documentation, code samples, and best practices. Online Training b. Participate in ServiceNow Community Forums The ServiceNow Community is a great place to learn from other developers and share solutions to common scripting challenges. c. Stay Updated with ServiceNow Releases ServiceNow regularly updates its platform with new features and optimizations. Review release notes to learn about new scripting improvements and deprecations. Conclusion ServiceNow scripting is a powerful tool for automating workflows, customizing applications, and optimizing business processes. By following best practices such as minimizing unnecessary queries, using built-in no-code/low-code features, and implementing security best practices, you can significantly enhance the efficiency of your ServiceNow environment.

Additionally, leveraging debugging techniques, optimizing client-side scripts, and staying updated with the latest ServiceNow developments will ensure long-term success. Visualpath is the Best Software Online Training Institute in Hyderabad. Avail is complete worldwide. You will get the best course at an affordable cost. For More Information about ServiceNow Online Training Contact Call/WhatsApp: +91-9989971070 Visit: https://www.visualpath.in/servicenow-online-training-in- hyderabad.html