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Editorial Team
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Asked: 2026-05-29T05:00:52+00:00

I am working on a project where there’s multiple libraries loading in the head.

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I am working on a project where there’s multiple libraries loading in the head. The CMS being used is WordPress.

Through the wp_head, there’s an enqueued script for the latest version 1.7.1, but just below it there’s a set of script files that begins with version 1.4.

Here’s a simple visual flowchart:

<head>    
  <script jQuery 1.7.1>
  <script jQuery 1.4>
  <script Colorbox>
  [7 more scripts dependent on 1.4 here]
</head>
...
<footer>
  <scripts that can use either 1.7.1 or 1.4>
</footer>

My understanding is that since jQuery 1.4 is below 1.7.1, that it is effectively the library being used.

Is it possible to rearrange the scripts so that those dependent on 1.4 can only be used by 1.4 then the rest by 1.7.1? For example:

<head>    
  <script jQuery 1.4>
  <script Colorbox>
  [7 more scripts dependent on 1.4 here]
  <script jQuery 1.7.1>
</head>
...
<footer>
  <scripts that can use either 1.7.1 or 1.4>
</footer>

See how I moved 1.7.1 down? Will 1.7.1’s placement in the head below the 1.4 scripts affect the 1.4 scripts?

Is there a way to detect which version of jQuery is being used throughout the page?

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1 Answer

  1. Editorial Team

    please define those in “those dependent on 1.4”, It is never a good idea to work back versions just for one part of a website. If it is multiple websites running the same header you might want to try and load in a php (databased) field and set the library that needs to be used in there. My advice would be that if indeed a part of your code doesn’t work with the new library, update that code. And always use the latest JQuery 🙂

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