---
title: Javascript-SDK - 4.3.0
slug: feature-experimentation/release-notes/javascript-sdk-4-3-0
docTags: 
createdAt: 2026-07-20T15:45:26.056Z
---

\## \[4.3.0] - October 1, 2020

\### New Features

\- Added support for version audience evaluation (\[#517]\([https://github.com/optimizely/javascript-sdk/pull/571](https://github.com/optimizely/javascript-sdk/pull/571)))
\- Add datafile accessor (\[#564]\([https://github.com/optimizely/javascript-sdk/pull/564](https://github.com/optimizely/javascript-sdk/pull/564)))

[https://github.com/optimizely/javascript-sdk/releases/tag/v4.3.0](https://github.com/optimizely/javascript-sdk/releases/tag/v4.3.0)