defjosiah·6년 전You can (usually accidentally) end up with a render blocking script tag. In this article example it was client-side optimizely.The parsing and execution of third-party javascript is definitely non-trivial if you profile it, especially on lower end devices.Finally, browser download priority requires async and defer attributes on scripts (usually), or other clever ways of deferring loading.0 commentsPost comment—
The parsing and execution of third-party javascript is definitely non-trivial if you profile it, especially on lower end devices.
Finally, browser download priority requires async and defer attributes on scripts (usually), or other clever ways of deferring loading.