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Editorial Team
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Asked: 2026-05-26T00:55:55+00:00

Apologies for the dumb sounding question, but I need the experts to clarify. Out

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Apologies for the dumb sounding question, but I need the experts to clarify.

Out of the three places to put JavaScript, head, $(document).ready, or body, where would the best place be to put some ajax that uses a lot of $GET functions?

For instance I am using a JavaScript function called execute_send() but I am unsure where the best place to put it would be. Below is the error:

Problem at line 67 character 22: ‘execute_send’ was used before it was defined.
function execute_send() {

Also how does the placement affect the page loading time?

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1 Answer

  1. Editorial Team

    In general, unless for some reason you need it elsewhere, put all of your JS last in the body. The browser won’t continue until it’s parsed your JS, so it is nice to let the page load first. See http://developer.yahoo.com/performance/rules.html

    As an example of when you might actually want to put JS in the head: You might have some A/B testing code that you want to run before the page even renders – in that case, the code should go in the head, because you really do want it to run as soon as possible.

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