Question

For javascript functions that only apply to one page, in a large(ish) web app – is it better to have the scripts inline or in the main javascript file?

Answer 1

If your application gets little traffic, use whatever you like best.

If your application gets a huge amount of traffic, you want to minimize:

1. the number of distinct requestable resources in your application to maximize cacheability
2. the size of each individual resource to optimize the empty cache experience.

1 and 2 contradict each other, so you have to pick a tradeoff appropriate to your application.