Why we should do not insert many script before the fold?

[jeyavinoth]

Hi,
       Why we should do not insert many script before the fold?

Regards,
Jeya vinoth

[komal]

I don't know the exact answer. So read this article: You should avoid and minimize the use of blocking JavaScript, especially external scripts that must be fetched before they can be executed. Scripts that are necessary to render page content can be inlined to avoid extra network requests, however the inlined content needs to be small and must execute quickly to deliver good performance. Scripts that are not critical to initial render should be made asynchronous or deferred until after the first render.