How can one tell the version of React running at runtime in the browser?

Question

Is there a way to know the runtime version of React in the browser?

Answer 1

With the React Devtools installed you can run this from the browser console:

__REACT_DEVTOOLS_GLOBAL_HOOK__.renderers.forEach(r => console.log(`${r.rendererPackageName}: ${r.version}`))

Which outputs something like:

react-dom: 16.12.0