Andre Dev Log
Andre Dev Log
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Experimenting & blogging about ServiceNow, JS, Node, Typescript
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Recent Posts
Querying ref_ Fields on Extended Tables
ref_ queries are one of those ServiceNow features that are useful, slightly obscure, and easy to misuse. They show up when you start …
Mar 14, 2026
5 min read
ServiceNow
,
GlideRecord
,
Performance
,
Table Extension
ACL Misconceptions That Hurt Performance
ACLs are easy to treat as a pure security feature and forget that they also sit on a hot path. When an instance loads a form, renders …
Feb 2, 2026
5 min read
ServiceNow
,
ACL
,
Security
,
Performance
Minimize Server Lookups in Client Scripts
Client scripts get slow and noisy when every small decision turns into another server call. Most of the time, the real problem is not …
Jan 4, 2026
4 min read
ServiceNow
,
Client Script
,
JavaScript
,
Performance
Querying Tables Best Practices
Querying tables is one of those things that looks harmless until the same script runs against production-sized data. A query that …
Oct 15, 2025
4 min read
ServiceNow
,
GlideRecord
,
Performance
Advanced RegEx Search in VS Code
When standard search isn’t enough, VS Code’s regex capabilities come to the rescue. While Cmd + Shift + f works for basic searches, …
Jan 11, 2025
1 min read
VS Code
,
Search
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Recent Snippets
Promisified GlideAjax
When client scripts rely on multiple GlideAjax calls, callback nesting can quickly become hard to read and maintain. A small Promise …
Feb 1, 2026
ServiceNow
,
JavaScript
Search through all code
Every ServiceNow instance has an OOB page for codesearch: https:// …
Mar 1, 2021
ServiceNow
Get instance URL in server side scripting
Server URL is stored in following property. gs.getProperty('glide.servlet.uri') Note 1: This property does not exists in the …
Feb 17, 2021
ServiceNow
Auto-login to an instance with URL parameters
There is a possibility to login to the instance via the URL. You just pass you login name and password via URL paremeters like follows: …
Jan 2, 2021
ServiceNow
,
Release: Orlando
,
Release: New York
UI Macro: Context menu for a form header
Not an easy to find functionality is hidden in this UI macros. It is being loaded on every form and renders context menu: …
Nov 2, 2020
ServiceNow
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