I have some pages that use specific javascript files / scripts and I do not include them in the site header, since not all pages would use them, I would like to know if it is good practice to include Js files / codes in distinct parts of the page without being in the header, what if this reduces the loading speed?
<header>
file.js - this will be included by all the pages that have the header
Another specific page:
<header>
<content>
file.js - including the js file in a separate part of the header on a specific page ...