---
title: Javascript-SDK - 3.6.0-alpha.1
slug: feature-experimentation/release-notes/javascript-sdk-3-6-0-alpha-1
docTags: 
createdAt: 2026-07-20T15:44:32.110Z
---

\## \[3.6.0-alpha.1] - March 4, 2020

\### New Features

\- Changed \`track()\` to log a warning instead of an error when the event isn't in the datafile (\[#418]\([https://github.com/optimizely/javascript-sdk/pull/418](https://github.com/optimizely/javascript-sdk/pull/418)))

[https://github.com/optimizely/javascript-sdk/releases/tag/3.6.0-alpha.1](https://github.com/optimizely/javascript-sdk/releases/tag/3.6.0-alpha.1)