javascript - Does it make a difference how I get the user to load a script into a webpage? -


i know small , maybe not worth taking time consider or change, i'm still interested (also maybe significant bigger files). injecting 1 of several js scripts webpage, based on http parameter: server (php) looks @ parameter's value , loads corresponding script. question is, there, hypothetically, difference between doing this:

<script type="text/javascript" src="<?php echo getscriptlocation($_get["foo"]); ?>"></script>

and this:

<script type="text/javascript"> <?php echo getscript($_get["foo"]); </script>

?

that is, there perceived difference client based on whether send them script, or script's location?

if send script location, client makes http requests in background , execute when it's ready. let page load continue , reduces size of page requested.

the requested script can cached client, makes additional request instantaneous.

i prefers pass location. 1 script works fine. if have tons of them, should group scripts in way reduce number of requests, on mobile clients lot of simultaneous requests bad.


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