How can I avoid jQuery scripts being loaded multiple times?

Question

On my site, I load jQuery UI script using the following code:

wp_enqueue_script('nf-jquery-ui','http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.min.js')

In my plugin I use the following code:

wp_enqueue_script('wp_filebrowser-jqueryui','http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js')

The result is that both these lines are added to my header - and loading a script twice is not very good.

Yes, I know I can remove it from either my plugin or my site. But the point is that anyone can download my plugin, and they might already be loading the jQuery UI script.

How can I avoid having a script being added twice?

4 spaces before a line formats as code. ctr-k for a selection. — Peter Ajtai
– Peter Ajtai, Commented Oct 18, 2010 at 0:04
Also, you're quoting Wordpress PHP functions right? You might want to state that. — Peter Ajtai
– Peter Ajtai, Commented Oct 18, 2010 at 0:05
@ Peter: It's less readable having 4 spaces thus getting a scrollbar. Using '' makes it easier to read in this case. - So having Wordpress in tags and using wp_enqueue_script is not enough pointers? — Steven
– Steven, Commented Oct 18, 2010 at 9:25
No, not everyone is familiar with wordpress / wordpress function names. I had to check the tags to confirm these were not jQuery functions. Personally I don’t first read tags then question, but the other way around. And for that, having the text state every useful info is a lot better than pruning information that the tags may provide; you’ll have to reread the question. — Kissaki
– Kissaki, Commented Oct 18, 2010 at 9:29
+1 Peter Ajtai, ctrl+k never knew that. I've been spacing huge amounts of code for ages. Feel so crap right now. — Josh Smeaton
– Josh Smeaton, Commented Oct 18, 2010 at 10:09

bharat parmar · Accepted Answer · 2019-12-03 07:18:40Z

2

You could deregister the first script by putting this line in your plugin...

wp_deregister_script( 'nf-jquery-ui');

before you call your 'enqueue script'

wp_enqueue_script('wp_filebrowser-jqueryui','http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js')

This should remove the first jQuery call on all pages that use your plugin.

edited Dec 3, 2019 at 7:18

bharat parmar

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answered Oct 18, 2010 at 3:16

awats

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1 Comment

Steven Over a year ago

Yes, I think wp_deregister_scriptis pretty close to what I need to do.

Kissaki · Accepted Answer · 2010-10-18 09:36:18Z

0

The WP API states the first param is a handler. That one is probably used so a script is only inserted once (although I can not say for sure).

It also defines handlers for jQuery and jQuery UI which you should probably use. Those handlers are for included scripts and jQuery as well as jQuery-ui is listed there. If you want to update consider passing the version to the wp_-function or just replacing the jQuery script file that’s already in use / packaged with wp.

answered Oct 18, 2010 at 9:36

Kissaki

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