The Browser Agent, sometimes called the JS Agent, has multiple variants: Lite, Pro, Pro+SPA. Unless noted otherwise, all features/improvements/bug fixes are available in all variants of the agent.
- Passive Scroll Event Listeners: Previously, the wrapped scroll event listener did not take advantage of an available performance optimization: the passive annotation. By including this annotation, our wrapped scroll listener will allow a non-blocking, smooth scrolling action.
- XHR With Credentials: Previously, when the agent would send data using an XHR, it would feature-check the
withCredentialsproperty and set it to
trueif it was available. However, older versions of IE do not allow modification of the
withCredentialsproperty on unsent XHRs. The agent now wraps the property assignment in a try/catch block to prevent errors.
To upgrade your agent to the latest version, see Upgrade Browser agent.