WP HeadJS
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Uses HeadJS to load your enqueued scripts asynchronously, in parallel, executing them in order.
This plugin uses the wp_print_scripts action hook, as opposed to output buffering and regex used by alternative implementations.
The downside of this method is that only scripts loaded via wp_enqueue_script will be affected by the plugin, the upside is better performance by avoiding output buffering on every page load.
The plugin will preserve any localizations added via wp_localize_script, and uses the first parameter passed to wp_enqueue_script as the label for the script in the head.js call. For example,
wp_enqueue_script('jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js');
would show up as
head.js({"jquery": "https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"});
This allows you to run callbacks when specific scripts are ready, such as
head.ready('jquery', function() {
//do something when jquery is loaded
});
For more on HeadJS usage, see http://headjs.com/
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