---
title: Javascript-SDK - 3.0.0-alpha
slug: feature-experimentation/release-notes/javascript-sdk-3-0-0-alpha
docTags: 
createdAt: 2026-07-20T15:44:20.380Z
---

This is the alpha release of the 3.0 SDK, which includes a number of improvements to audience targeting:

\### New Features

\- Support for number-valued and boolean-valued attributes (\[#174]\([https://github.com/optimizely/javascript-sdk/pull/174](https://github.com/optimizely/javascript-sdk/pull/174))).
\- Support for audiences with new match conditions for attribute values, including 'substring' and 'exists' matches for strings; 'greater than', 'less than', 'exact, and 'exists' matches for numbers; and "exact" and 'exists' matches for booleans (\[#174]\([https://github.com/optimizely/javascript-sdk/pull/174](https://github.com/optimizely/javascript-sdk/pull/174))).

\### Breaking Changes

\- Previously, when a 'not' audience condition was applied to a malformed attribute, it was possible for the condition to evaluate to \`true\`. We’ve corrected this behavior, so that malformed attributes always evaluate to \`null\` and are ignored (\[#174]\([https://github.com/optimizely/javascript-sdk/pull/174](https://github.com/optimizely/javascript-sdk/pull/174))).

[https://github.com/optimizely/javascript-sdk/releases/tag/v3.0.0-alpha](https://github.com/optimizely/javascript-sdk/releases/tag/v3.0.0-alpha)