PerformanceScriptTiming: executionStart property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The executionStart read-only property of the PerformanceScriptTiming interface returns a DOMHighResTimeStamp indicating the time when the script compilation finished and execution started.